./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi008.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi008.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:43:39,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:43:39,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:43:39,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:43:39,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:43:39,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:43:39,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:43:39,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:43:39,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:43:39,527 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:43:39,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:43:39,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:43:39,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:43:39,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:43:39,529 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:43:39,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:43:39,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:43:39,530 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:43:39,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:43:39,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:43:39,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:43:39,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:43:39,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:43:39,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:43:39,532 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:43:39,533 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:43:39,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:43:39,533 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:43:39,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:43:39,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:43:39,534 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:43:39,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:43:39,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:43:39,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:43:39,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:43:39,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:43:39,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:43:39,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:43:39,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:43:39,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:43:39,538 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:43:39,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:43:39,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:43:39,539 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:43:39,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:43:39,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:43:39,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:43:39,815 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:43:39,815 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:43:39,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-28 03:43:41,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:43:41,330 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:43:41,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-28 03:43:41,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182c32694/04ae4b7d72674e249a4266605224e884/FLAG1fc5e1a6b [2024-06-28 03:43:41,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182c32694/04ae4b7d72674e249a4266605224e884 [2024-06-28 03:43:41,360 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:43:41,361 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:43:41,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi008.oepc.yml/witness.yml [2024-06-28 03:43:41,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:43:41,531 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:43:41,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:43:41,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:43:41,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:43:41,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:43:41" (1/2) ... [2024-06-28 03:43:41,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14337b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:43:41, skipping insertion in model container [2024-06-28 03:43:41,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:43:41" (1/2) ... [2024-06-28 03:43:41,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ae9108c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:43:41, skipping insertion in model container [2024-06-28 03:43:41,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:43:41" (2/2) ... [2024-06-28 03:43:41,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14337b42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:41, skipping insertion in model container [2024-06-28 03:43:41,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:43:41" (2/2) ... [2024-06-28 03:43:41,543 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:43:41,616 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:43:41,617 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-28 03:43:41,617 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-28 03:43:41,618 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:43:41,618 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 03:43:41,666 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:43:42,055 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:43:42,072 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:43:42,183 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:43:42,219 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:43:42,219 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42 WrapperNode [2024-06-28 03:43:42,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:43:42,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:43:42,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:43:42,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:43:42,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,281 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-28 03:43:42,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:43:42,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:43:42,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:43:42,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:43:42,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,319 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:43:42,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:43:42,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:43:42,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:43:42,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:43:42,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (1/1) ... [2024-06-28 03:43:42,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:43:42,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:43:42,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:43:42,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:43:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:43:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:43:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:43:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:43:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:43:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:43:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:43:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:43:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:43:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:43:42,444 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:43:42,601 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:43:42,603 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:43:43,044 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:43:43,045 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:43:43,222 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:43:43,222 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:43:43,223 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:43:43 BoogieIcfgContainer [2024-06-28 03:43:43,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:43:43,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:43:43,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:43:43,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:43:43,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:43:41" (1/4) ... [2024-06-28 03:43:43,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e980293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:43:43, skipping insertion in model container [2024-06-28 03:43:43,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:43:41" (2/4) ... [2024-06-28 03:43:43,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e980293 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:43:43, skipping insertion in model container [2024-06-28 03:43:43,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:42" (3/4) ... [2024-06-28 03:43:43,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e980293 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:43:43, skipping insertion in model container [2024-06-28 03:43:43,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:43:43" (4/4) ... [2024-06-28 03:43:43,237 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.oepc.i [2024-06-28 03:43:43,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:43:43,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:43:43,253 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:43:43,292 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:43:43,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:43:43,349 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 03:43:43,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:43:43,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:43:43,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:43:43,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 03:43:43,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:43:43,372 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1cc00303, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:43:43,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:43:43,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:43:43,378 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:43:43,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:43:43,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:43,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:43:43,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:43,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 368677949, now seen corresponding path program 1 times [2024-06-28 03:43:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:43,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429381840] [2024-06-28 03:43:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:44,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:44,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429381840] [2024-06-28 03:43:44,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429381840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:44,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:44,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:43:44,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821718845] [2024-06-28 03:43:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:43:44,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:43:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:43:44,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 03:43:44,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:44,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 03:43:44,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:44,572 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-28 03:43:44,572 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:43:44,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 309 events. 162/309 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-28 03:43:44,577 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 03:43:44,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-28 03:43:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:43:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:43:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-28 03:43:44,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-28 03:43:44,590 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2024-06-28 03:43:44,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-28 03:43:44,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:43:44,594 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 03:43:44,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 03:43:44,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 03:43:44,599 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 03:43:44,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:44,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:44,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:43:44,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:44,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2112218588, now seen corresponding path program 1 times [2024-06-28 03:43:44,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:44,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866757283] [2024-06-28 03:43:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:44,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:45,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866757283] [2024-06-28 03:43:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866757283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:45,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:45,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:43:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636300581] [2024-06-28 03:43:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:45,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:43:45,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:43:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:43:45,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 03:43:45,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:45,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:45,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 03:43:45,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:45,400 INFO L124 PetriNetUnfolderBase]: 159/306 cut-off events. [2024-06-28 03:43:45,401 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-28 03:43:45,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 306 events. 159/306 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1173 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-28 03:43:45,407 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 03:43:45,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-28 03:43:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:43:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:43:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-28 03:43:45,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 03:43:45,410 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-28 03:43:45,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-28 03:43:45,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:43:45,412 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 03:43:45,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 03:43:45,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 03:43:45,413 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 03:43:45,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:45,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:45,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:45,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:43:45,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:45,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1054267720, now seen corresponding path program 1 times [2024-06-28 03:43:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:45,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990395284] [2024-06-28 03:43:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:45,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:46,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:46,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990395284] [2024-06-28 03:43:46,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990395284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:46,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:46,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:43:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076780709] [2024-06-28 03:43:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:46,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:43:46,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:46,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:43:46,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:43:46,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 03:43:46,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:46,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:46,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 03:43:46,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:46,706 INFO L124 PetriNetUnfolderBase]: 156/306 cut-off events. [2024-06-28 03:43:46,706 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-28 03:43:46,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 306 events. 156/306 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1153 event pairs, 61 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 750. Up to 260 conditions per place. [2024-06-28 03:43:46,709 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 29 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-28 03:43:46,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 205 flow [2024-06-28 03:43:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:43:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:43:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-28 03:43:46,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567741935483871 [2024-06-28 03:43:46,714 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 88 transitions. [2024-06-28 03:43:46,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 205 flow [2024-06-28 03:43:46,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:43:46,719 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 03:43:46,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 03:43:46,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 03:43:46,721 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 03:43:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:46,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:46,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:46,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:43:46,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:46,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1256776971, now seen corresponding path program 1 times [2024-06-28 03:43:46,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463504354] [2024-06-28 03:43:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463504354] [2024-06-28 03:43:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463504354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:48,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:48,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:48,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416097614] [2024-06-28 03:43:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:48,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:48,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:43:48,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:48,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:48,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:43:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:48,641 INFO L124 PetriNetUnfolderBase]: 181/345 cut-off events. [2024-06-28 03:43:48,641 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-06-28 03:43:48,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 345 events. 181/345 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1272 event pairs, 47 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 925. Up to 285 conditions per place. [2024-06-28 03:43:48,644 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 11 changer transitions 0/53 dead transitions. [2024-06-28 03:43:48,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 288 flow [2024-06-28 03:43:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 03:43:48,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253456221198156 [2024-06-28 03:43:48,647 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 7 states and 114 transitions. [2024-06-28 03:43:48,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 288 flow [2024-06-28 03:43:48,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 268 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:48,650 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 158 flow [2024-06-28 03:43:48,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-28 03:43:48,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-28 03:43:48,651 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 158 flow [2024-06-28 03:43:48,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:48,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:48,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:48,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:43:48,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:48,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash -905032760, now seen corresponding path program 1 times [2024-06-28 03:43:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007189327] [2024-06-28 03:43:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:49,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007189327] [2024-06-28 03:43:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007189327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:49,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:49,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:43:49,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545792909] [2024-06-28 03:43:49,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:49,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:43:49,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:49,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:43:49,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:43:49,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:49,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:49,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:49,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:49,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:49,423 INFO L124 PetriNetUnfolderBase]: 211/379 cut-off events. [2024-06-28 03:43:49,423 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-06-28 03:43:49,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 379 events. 211/379 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1342 event pairs, 56 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1145. Up to 368 conditions per place. [2024-06-28 03:43:49,426 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 32 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-28 03:43:49,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 252 flow [2024-06-28 03:43:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:43:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:43:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-28 03:43:49,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:43:49,427 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 158 flow. Second operand 5 states and 61 transitions. [2024-06-28 03:43:49,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 252 flow [2024-06-28 03:43:49,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 229 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:49,430 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 162 flow [2024-06-28 03:43:49,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-28 03:43:49,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-28 03:43:49,432 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 162 flow [2024-06-28 03:43:49,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:49,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:49,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:49,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:43:49,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:49,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1405231846, now seen corresponding path program 1 times [2024-06-28 03:43:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961759156] [2024-06-28 03:43:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:51,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961759156] [2024-06-28 03:43:51,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961759156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:51,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:51,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:51,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769979056] [2024-06-28 03:43:51,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:51,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:51,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:51,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:51,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:43:51,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:51,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:51,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:43:51,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:51,478 INFO L124 PetriNetUnfolderBase]: 190/354 cut-off events. [2024-06-28 03:43:51,480 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-06-28 03:43:51,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 354 events. 190/354 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1264 event pairs, 34 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 1101. Up to 272 conditions per place. [2024-06-28 03:43:51,484 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-28 03:43:51,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 308 flow [2024-06-28 03:43:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 03:43:51,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:43:51,486 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 162 flow. Second operand 8 states and 124 transitions. [2024-06-28 03:43:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 308 flow [2024-06-28 03:43:51,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 297 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:51,490 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 169 flow [2024-06-28 03:43:51,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=169, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-06-28 03:43:51,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 03:43:51,493 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 169 flow [2024-06-28 03:43:51,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:51,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:51,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:43:51,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:51,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2008756451, now seen corresponding path program 1 times [2024-06-28 03:43:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643850584] [2024-06-28 03:43:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:52,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643850584] [2024-06-28 03:43:52,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643850584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:52,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:52,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:52,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410701585] [2024-06-28 03:43:52,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:52,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:52,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:52,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:52,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:52,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:52,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:52,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:52,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:52,361 INFO L124 PetriNetUnfolderBase]: 201/362 cut-off events. [2024-06-28 03:43:52,362 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-06-28 03:43:52,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 362 events. 201/362 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1236 event pairs, 49 based on Foata normal form. 3/363 useless extension candidates. Maximal degree in co-relation 1194. Up to 342 conditions per place. [2024-06-28 03:43:52,364 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-28 03:43:52,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 279 flow [2024-06-28 03:43:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:43:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:43:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 03:43:52,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:43:52,366 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 169 flow. Second operand 6 states and 71 transitions. [2024-06-28 03:43:52,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 279 flow [2024-06-28 03:43:52,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 249 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:52,368 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 172 flow [2024-06-28 03:43:52,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-28 03:43:52,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 03:43:52,369 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 172 flow [2024-06-28 03:43:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:52,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:52,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:52,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:43:52,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:52,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash -921354087, now seen corresponding path program 1 times [2024-06-28 03:43:52,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:52,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926247633] [2024-06-28 03:43:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:52,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:53,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:53,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926247633] [2024-06-28 03:43:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926247633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476639478] [2024-06-28 03:43:53,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:53,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:53,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:53,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:53,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:53,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:53,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:53,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:53,291 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-28 03:43:53,291 INFO L125 PetriNetUnfolderBase]: For 1155/1155 co-relation queries the response was YES. [2024-06-28 03:43:53,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 383 events. 213/383 cut-off events. For 1155/1155 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1313 event pairs, 50 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1301. Up to 359 conditions per place. [2024-06-28 03:43:53,294 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-06-28 03:43:53,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 339 flow [2024-06-28 03:43:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 03:43:53,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 03:43:53,295 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 172 flow. Second operand 7 states and 80 transitions. [2024-06-28 03:43:53,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 339 flow [2024-06-28 03:43:53,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 320 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:53,298 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 240 flow [2024-06-28 03:43:53,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 03:43:53,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-28 03:43:53,299 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 240 flow [2024-06-28 03:43:53,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:53,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:53,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:43:53,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:53,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1265593527, now seen corresponding path program 2 times [2024-06-28 03:43:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:53,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966753659] [2024-06-28 03:43:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:53,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:53,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966753659] [2024-06-28 03:43:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966753659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:53,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:53,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:53,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142948363] [2024-06-28 03:43:53,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:53,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:53,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:54,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:54,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:54,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:54,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:54,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:54,193 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-28 03:43:54,194 INFO L125 PetriNetUnfolderBase]: For 1471/1471 co-relation queries the response was YES. [2024-06-28 03:43:54,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 380 events. 211/380 cut-off events. For 1471/1471 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1302 event pairs, 49 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1383. Up to 365 conditions per place. [2024-06-28 03:43:54,197 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-28 03:43:54,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 346 flow [2024-06-28 03:43:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:43:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:43:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-28 03:43:54,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:43:54,198 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 240 flow. Second operand 6 states and 69 transitions. [2024-06-28 03:43:54,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 346 flow [2024-06-28 03:43:54,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 338 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 03:43:54,201 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 255 flow [2024-06-28 03:43:54,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-28 03:43:54,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 03:43:54,202 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 255 flow [2024-06-28 03:43:54,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:54,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:54,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:43:54,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:54,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:54,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1114817301, now seen corresponding path program 3 times [2024-06-28 03:43:54,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:54,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716209710] [2024-06-28 03:43:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:54,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716209710] [2024-06-28 03:43:54,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716209710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:54,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:54,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:54,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105088719] [2024-06-28 03:43:54,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:54,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:54,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:54,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:54,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:54,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:55,057 INFO L124 PetriNetUnfolderBase]: 209/377 cut-off events. [2024-06-28 03:43:55,057 INFO L125 PetriNetUnfolderBase]: For 1819/1819 co-relation queries the response was YES. [2024-06-28 03:43:55,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 377 events. 209/377 cut-off events. For 1819/1819 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1296 event pairs, 49 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1415. Up to 345 conditions per place. [2024-06-28 03:43:55,060 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-28 03:43:55,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 414 flow [2024-06-28 03:43:55,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 03:43:55,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:43:55,062 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 255 flow. Second operand 7 states and 84 transitions. [2024-06-28 03:43:55,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 414 flow [2024-06-28 03:43:55,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 397 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:55,065 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 318 flow [2024-06-28 03:43:55,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-28 03:43:55,066 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-28 03:43:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 318 flow [2024-06-28 03:43:55,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:55,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:55,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:55,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:43:55,067 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:55,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1767584361, now seen corresponding path program 1 times [2024-06-28 03:43:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826697972] [2024-06-28 03:43:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826697972] [2024-06-28 03:43:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826697972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:56,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400391877] [2024-06-28 03:43:56,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:56,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:56,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:56,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:56,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:56,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:56,337 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-28 03:43:56,337 INFO L125 PetriNetUnfolderBase]: For 2283/2283 co-relation queries the response was YES. [2024-06-28 03:43:56,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 382 events. 212/382 cut-off events. For 2283/2283 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1340 event pairs, 49 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1540. Up to 327 conditions per place. [2024-06-28 03:43:56,340 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-06-28 03:43:56,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 520 flow [2024-06-28 03:43:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 03:43:56,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-28 03:43:56,343 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 318 flow. Second operand 7 states and 88 transitions. [2024-06-28 03:43:56,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 520 flow [2024-06-28 03:43:56,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 488 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:56,347 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 361 flow [2024-06-28 03:43:56,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-28 03:43:56,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-28 03:43:56,348 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 361 flow [2024-06-28 03:43:56,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:56,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:56,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:43:56,349 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:56,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1502795314, now seen corresponding path program 1 times [2024-06-28 03:43:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:56,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624525420] [2024-06-28 03:43:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:56,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:57,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:57,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624525420] [2024-06-28 03:43:57,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624525420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:57,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:57,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:57,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624339789] [2024-06-28 03:43:57,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:57,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:57,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:57,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:57,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:57,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 361 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:57,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:57,439 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-28 03:43:57,439 INFO L125 PetriNetUnfolderBase]: For 3071/3071 co-relation queries the response was YES. [2024-06-28 03:43:57,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 421 events. 236/421 cut-off events. For 3071/3071 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1491 event pairs, 53 based on Foata normal form. 3/422 useless extension candidates. Maximal degree in co-relation 1779. Up to 370 conditions per place. [2024-06-28 03:43:57,442 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2024-06-28 03:43:57,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 577 flow [2024-06-28 03:43:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 03:43:57,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 03:43:57,444 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 361 flow. Second operand 8 states and 95 transitions. [2024-06-28 03:43:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 577 flow [2024-06-28 03:43:57,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 546 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:57,449 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 412 flow [2024-06-28 03:43:57,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=412, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-28 03:43:57,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-28 03:43:57,450 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 412 flow [2024-06-28 03:43:57,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:57,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:57,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:43:57,451 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:57,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:57,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1502795097, now seen corresponding path program 2 times [2024-06-28 03:43:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:57,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696321655] [2024-06-28 03:43:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:57,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:58,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:58,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696321655] [2024-06-28 03:43:58,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696321655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:58,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:58,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:58,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253375731] [2024-06-28 03:43:58,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:58,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:58,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:58,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:58,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 412 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:58,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:58,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:58,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:58,577 INFO L124 PetriNetUnfolderBase]: 239/426 cut-off events. [2024-06-28 03:43:58,577 INFO L125 PetriNetUnfolderBase]: For 3457/3457 co-relation queries the response was YES. [2024-06-28 03:43:58,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 426 events. 239/426 cut-off events. For 3457/3457 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1511 event pairs, 50 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 1926. Up to 389 conditions per place. [2024-06-28 03:43:58,580 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 19 changer transitions 0/68 dead transitions. [2024-06-28 03:43:58,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 578 flow [2024-06-28 03:43:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 03:43:58,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-28 03:43:58,582 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 412 flow. Second operand 7 states and 83 transitions. [2024-06-28 03:43:58,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 578 flow [2024-06-28 03:43:58,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 562 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:58,588 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 458 flow [2024-06-28 03:43:58,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2024-06-28 03:43:58,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 03:43:58,589 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 458 flow [2024-06-28 03:43:58,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:58,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:58,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:43:58,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:58,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -578692951, now seen corresponding path program 3 times [2024-06-28 03:43:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:58,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85664902] [2024-06-28 03:43:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85664902] [2024-06-28 03:43:59,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85664902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:59,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:59,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:59,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687144918] [2024-06-28 03:43:59,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:59,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:59,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:59,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:43:59,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 458 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:59,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:59,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:43:59,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:59,677 INFO L124 PetriNetUnfolderBase]: 237/423 cut-off events. [2024-06-28 03:43:59,677 INFO L125 PetriNetUnfolderBase]: For 3909/3909 co-relation queries the response was YES. [2024-06-28 03:43:59,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 423 events. 237/423 cut-off events. For 3909/3909 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1493 event pairs, 51 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1965. Up to 405 conditions per place. [2024-06-28 03:43:59,681 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 53 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-06-28 03:43:59,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 66 transitions, 600 flow [2024-06-28 03:43:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:43:59,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 03:43:59,682 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 458 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:43:59,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 66 transitions, 600 flow [2024-06-28 03:43:59,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 556 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:59,690 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 441 flow [2024-06-28 03:43:59,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-06-28 03:43:59,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 03:43:59,691 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 441 flow [2024-06-28 03:43:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:59,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:59,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:59,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:43:59,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:59,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1974654658, now seen corresponding path program 2 times [2024-06-28 03:43:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237186083] [2024-06-28 03:43:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:00,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:00,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237186083] [2024-06-28 03:44:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237186083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:00,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:00,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:44:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439745090] [2024-06-28 03:44:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:00,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:44:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:44:00,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:44:00,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:00,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 441 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:00,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:00,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:00,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:00,683 INFO L124 PetriNetUnfolderBase]: 246/438 cut-off events. [2024-06-28 03:44:00,683 INFO L125 PetriNetUnfolderBase]: For 4655/4655 co-relation queries the response was YES. [2024-06-28 03:44:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 438 events. 246/438 cut-off events. For 4655/4655 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1560 event pairs, 51 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 2044. Up to 414 conditions per place. [2024-06-28 03:44:00,687 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 57 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-28 03:44:00,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 70 transitions, 613 flow [2024-06-28 03:44:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:44:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:44:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 03:44:00,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 03:44:00,688 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 441 flow. Second operand 7 states and 80 transitions. [2024-06-28 03:44:00,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 70 transitions, 613 flow [2024-06-28 03:44:00,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 571 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:00,706 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 446 flow [2024-06-28 03:44:00,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-06-28 03:44:00,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 03:44:00,707 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 446 flow [2024-06-28 03:44:00,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:00,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:00,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:00,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:44:00,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:00,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:00,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1773298498, now seen corresponding path program 3 times [2024-06-28 03:44:00,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:00,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433160014] [2024-06-28 03:44:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:00,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:01,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:01,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433160014] [2024-06-28 03:44:01,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433160014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:01,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:01,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:44:01,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075264974] [2024-06-28 03:44:01,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:01,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:44:01,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:44:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:44:01,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:01,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:01,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:01,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:01,710 INFO L124 PetriNetUnfolderBase]: 240/429 cut-off events. [2024-06-28 03:44:01,710 INFO L125 PetriNetUnfolderBase]: For 4942/4942 co-relation queries the response was YES. [2024-06-28 03:44:01,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 429 events. 240/429 cut-off events. For 4942/4942 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1522 event pairs, 49 based on Foata normal form. 3/430 useless extension candidates. Maximal degree in co-relation 2000. Up to 393 conditions per place. [2024-06-28 03:44:01,714 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-28 03:44:01,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 72 transitions, 612 flow [2024-06-28 03:44:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:44:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:44:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 03:44:01,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:44:01,716 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 446 flow. Second operand 7 states and 84 transitions. [2024-06-28 03:44:01,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 72 transitions, 612 flow [2024-06-28 03:44:01,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 579 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:01,723 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 446 flow [2024-06-28 03:44:01,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2024-06-28 03:44:01,724 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 03:44:01,724 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 446 flow [2024-06-28 03:44:01,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:01,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:01,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:44:01,727 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:01,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -199597024, now seen corresponding path program 4 times [2024-06-28 03:44:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055662284] [2024-06-28 03:44:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:01,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:02,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:02,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055662284] [2024-06-28 03:44:02,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055662284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:44:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946470319] [2024-06-28 03:44:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:44:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:44:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:44:02,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:02,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:02,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:02,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:02,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:02,712 INFO L124 PetriNetUnfolderBase]: 244/436 cut-off events. [2024-06-28 03:44:02,712 INFO L125 PetriNetUnfolderBase]: For 5388/5388 co-relation queries the response was YES. [2024-06-28 03:44:02,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 436 events. 244/436 cut-off events. For 5388/5388 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1568 event pairs, 49 based on Foata normal form. 3/437 useless extension candidates. Maximal degree in co-relation 2042. Up to 383 conditions per place. [2024-06-28 03:44:02,716 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 22 changer transitions 0/80 dead transitions. [2024-06-28 03:44:02,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 680 flow [2024-06-28 03:44:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:02,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 03:44:02,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 03:44:02,718 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 446 flow. Second operand 8 states and 97 transitions. [2024-06-28 03:44:02,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 680 flow [2024-06-28 03:44:02,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 626 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:02,726 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 512 flow [2024-06-28 03:44:02,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-06-28 03:44:02,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 03:44:02,728 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 512 flow [2024-06-28 03:44:02,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:02,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:02,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:02,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:44:02,728 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:02,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:02,729 INFO L85 PathProgramCache]: Analyzing trace with hash 731248028, now seen corresponding path program 1 times [2024-06-28 03:44:02,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393115730] [2024-06-28 03:44:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393115730] [2024-06-28 03:44:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393115730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:03,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:03,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057279521] [2024-06-28 03:44:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:03,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:03,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 512 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:03,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:03,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:03,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:04,281 INFO L124 PetriNetUnfolderBase]: 247/441 cut-off events. [2024-06-28 03:44:04,282 INFO L125 PetriNetUnfolderBase]: For 5721/5721 co-relation queries the response was YES. [2024-06-28 03:44:04,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 441 events. 247/441 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1578 event pairs, 46 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2178. Up to 397 conditions per place. [2024-06-28 03:44:04,286 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2024-06-28 03:44:04,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 738 flow [2024-06-28 03:44:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:44:04,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:44:04,287 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 512 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:44:04,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 738 flow [2024-06-28 03:44:04,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 696 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:04,295 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 525 flow [2024-06-28 03:44:04,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2024-06-28 03:44:04,295 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-28 03:44:04,295 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 525 flow [2024-06-28 03:44:04,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:04,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:04,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:04,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:44:04,296 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:04,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458904, now seen corresponding path program 2 times [2024-06-28 03:44:04,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:04,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796727977] [2024-06-28 03:44:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:04,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:05,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796727977] [2024-06-28 03:44:05,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796727977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:05,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:05,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:05,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674132604] [2024-06-28 03:44:05,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:05,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:05,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:05,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:05,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:05,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 525 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:05,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:05,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:05,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:05,491 INFO L124 PetriNetUnfolderBase]: 258/459 cut-off events. [2024-06-28 03:44:05,492 INFO L125 PetriNetUnfolderBase]: For 6599/6599 co-relation queries the response was YES. [2024-06-28 03:44:05,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 459 events. 258/459 cut-off events. For 6599/6599 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1685 event pairs, 48 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 2309. Up to 360 conditions per place. [2024-06-28 03:44:05,496 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 30 changer transitions 0/92 dead transitions. [2024-06-28 03:44:05,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 875 flow [2024-06-28 03:44:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 03:44:05,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-28 03:44:05,497 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 525 flow. Second operand 8 states and 103 transitions. [2024-06-28 03:44:05,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 875 flow [2024-06-28 03:44:05,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 836 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:05,507 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 603 flow [2024-06-28 03:44:05,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=603, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-06-28 03:44:05,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 03:44:05,507 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 603 flow [2024-06-28 03:44:05,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:05,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:05,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:05,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:44:05,508 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:05,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458718, now seen corresponding path program 1 times [2024-06-28 03:44:05,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:05,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637580355] [2024-06-28 03:44:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:05,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:06,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637580355] [2024-06-28 03:44:06,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637580355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:06,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:06,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:06,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897212489] [2024-06-28 03:44:06,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:06,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:06,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:06,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:06,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:06,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:06,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 603 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:06,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:06,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:06,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:06,782 INFO L124 PetriNetUnfolderBase]: 271/480 cut-off events. [2024-06-28 03:44:06,782 INFO L125 PetriNetUnfolderBase]: For 7653/7653 co-relation queries the response was YES. [2024-06-28 03:44:06,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 480 events. 271/480 cut-off events. For 7653/7653 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1786 event pairs, 52 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 2499. Up to 346 conditions per place. [2024-06-28 03:44:06,786 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 60 selfloop transitions, 35 changer transitions 0/97 dead transitions. [2024-06-28 03:44:06,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 905 flow [2024-06-28 03:44:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:06,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 03:44:06,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:44:06,788 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 603 flow. Second operand 8 states and 104 transitions. [2024-06-28 03:44:06,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 905 flow [2024-06-28 03:44:06,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 872 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:44:06,799 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 701 flow [2024-06-28 03:44:06,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-28 03:44:06,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-28 03:44:06,800 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 701 flow [2024-06-28 03:44:06,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:06,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:06,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:44:06,801 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:06,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1034810578, now seen corresponding path program 2 times [2024-06-28 03:44:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:06,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519065986] [2024-06-28 03:44:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519065986] [2024-06-28 03:44:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519065986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742181980] [2024-06-28 03:44:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:07,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:07,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:07,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:07,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:08,136 INFO L124 PetriNetUnfolderBase]: 280/495 cut-off events. [2024-06-28 03:44:08,136 INFO L125 PetriNetUnfolderBase]: For 8936/8936 co-relation queries the response was YES. [2024-06-28 03:44:08,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 495 events. 280/495 cut-off events. For 8936/8936 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1858 event pairs, 49 based on Foata normal form. 3/496 useless extension candidates. Maximal degree in co-relation 2748. Up to 407 conditions per place. [2024-06-28 03:44:08,141 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 31 changer transitions 0/98 dead transitions. [2024-06-28 03:44:08,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 962 flow [2024-06-28 03:44:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 03:44:08,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:44:08,142 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 701 flow. Second operand 8 states and 100 transitions. [2024-06-28 03:44:08,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 962 flow [2024-06-28 03:44:08,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 912 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:44:08,158 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 754 flow [2024-06-28 03:44:08,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-06-28 03:44:08,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-28 03:44:08,159 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 754 flow [2024-06-28 03:44:08,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:08,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:08,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:08,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:44:08,160 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:08,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1034817274, now seen corresponding path program 3 times [2024-06-28 03:44:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:08,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496094953] [2024-06-28 03:44:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:09,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:09,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496094953] [2024-06-28 03:44:09,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496094953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:09,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:09,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:09,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502776767] [2024-06-28 03:44:09,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:09,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:09,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:09,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:09,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 754 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:09,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:09,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:09,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:09,409 INFO L124 PetriNetUnfolderBase]: 286/505 cut-off events. [2024-06-28 03:44:09,409 INFO L125 PetriNetUnfolderBase]: For 9552/9552 co-relation queries the response was YES. [2024-06-28 03:44:09,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 505 events. 286/505 cut-off events. For 9552/9552 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1906 event pairs, 52 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 2902. Up to 462 conditions per place. [2024-06-28 03:44:09,413 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2024-06-28 03:44:09,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 988 flow [2024-06-28 03:44:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:44:09,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:44:09,415 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 754 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:44:09,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 988 flow [2024-06-28 03:44:09,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 926 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:09,432 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 761 flow [2024-06-28 03:44:09,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=761, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-28 03:44:09,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-28 03:44:09,433 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 761 flow [2024-06-28 03:44:09,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:09,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:09,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:09,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:44:09,434 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:09,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash -657991310, now seen corresponding path program 3 times [2024-06-28 03:44:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607880127] [2024-06-28 03:44:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:09,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:10,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:10,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607880127] [2024-06-28 03:44:10,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607880127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:10,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:10,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411434282] [2024-06-28 03:44:10,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:10,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:10,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:10,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 761 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:10,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:10,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:10,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:10,826 INFO L124 PetriNetUnfolderBase]: 289/510 cut-off events. [2024-06-28 03:44:10,826 INFO L125 PetriNetUnfolderBase]: For 10172/10172 co-relation queries the response was YES. [2024-06-28 03:44:10,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 510 events. 289/510 cut-off events. For 10172/10172 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1937 event pairs, 49 based on Foata normal form. 1/509 useless extension candidates. Maximal degree in co-relation 2949. Up to 414 conditions per place. [2024-06-28 03:44:10,831 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 33 changer transitions 0/102 dead transitions. [2024-06-28 03:44:10,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 102 transitions, 1019 flow [2024-06-28 03:44:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 03:44:10,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 03:44:10,832 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 761 flow. Second operand 8 states and 102 transitions. [2024-06-28 03:44:10,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 102 transitions, 1019 flow [2024-06-28 03:44:10,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 972 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:10,848 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 805 flow [2024-06-28 03:44:10,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=805, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-06-28 03:44:10,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 03:44:10,849 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 805 flow [2024-06-28 03:44:10,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:10,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:10,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:10,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:44:10,849 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:10,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:10,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1256385208, now seen corresponding path program 4 times [2024-06-28 03:44:10,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:10,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141330368] [2024-06-28 03:44:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141330368] [2024-06-28 03:44:11,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141330368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:11,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:11,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939442763] [2024-06-28 03:44:11,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:11,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:11,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:11,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:11,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 805 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:11,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:11,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:11,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:12,091 INFO L124 PetriNetUnfolderBase]: 287/507 cut-off events. [2024-06-28 03:44:12,091 INFO L125 PetriNetUnfolderBase]: For 10800/10800 co-relation queries the response was YES. [2024-06-28 03:44:12,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 507 events. 287/507 cut-off events. For 10800/10800 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1910 event pairs, 54 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 2990. Up to 486 conditions per place. [2024-06-28 03:44:12,095 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-06-28 03:44:12,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 1031 flow [2024-06-28 03:44:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:44:12,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 03:44:12,097 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 805 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:44:12,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 1031 flow [2024-06-28 03:44:12,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 97 transitions, 962 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:12,111 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 791 flow [2024-06-28 03:44:12,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2024-06-28 03:44:12,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-28 03:44:12,111 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 791 flow [2024-06-28 03:44:12,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:12,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:12,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:44:12,112 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:12,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash -485494910, now seen corresponding path program 4 times [2024-06-28 03:44:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:12,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585881040] [2024-06-28 03:44:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:12,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:12,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585881040] [2024-06-28 03:44:12,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585881040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:12,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:12,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868893316] [2024-06-28 03:44:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:12,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:12,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:12,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:12,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 791 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:12,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:12,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:13,277 INFO L124 PetriNetUnfolderBase]: 296/522 cut-off events. [2024-06-28 03:44:13,277 INFO L125 PetriNetUnfolderBase]: For 12188/12188 co-relation queries the response was YES. [2024-06-28 03:44:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 522 events. 296/522 cut-off events. For 12188/12188 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1992 event pairs, 52 based on Foata normal form. 3/523 useless extension candidates. Maximal degree in co-relation 3071. Up to 475 conditions per place. [2024-06-28 03:44:13,288 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2024-06-28 03:44:13,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 1058 flow [2024-06-28 03:44:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 03:44:13,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 03:44:13,290 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 791 flow. Second operand 8 states and 95 transitions. [2024-06-28 03:44:13,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 1058 flow [2024-06-28 03:44:13,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 1021 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:13,308 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 836 flow [2024-06-28 03:44:13,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=836, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-06-28 03:44:13,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-28 03:44:13,309 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 836 flow [2024-06-28 03:44:13,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:13,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:13,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:13,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:44:13,310 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:13,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1084761594, now seen corresponding path program 1 times [2024-06-28 03:44:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800150440] [2024-06-28 03:44:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:13,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:13,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800150440] [2024-06-28 03:44:13,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800150440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:13,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:13,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:13,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898796967] [2024-06-28 03:44:13,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:13,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:14,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:14,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 836 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:14,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:14,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:14,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:14,358 INFO L124 PetriNetUnfolderBase]: 292/516 cut-off events. [2024-06-28 03:44:14,358 INFO L125 PetriNetUnfolderBase]: For 12323/12323 co-relation queries the response was YES. [2024-06-28 03:44:14,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 516 events. 292/516 cut-off events. For 12323/12323 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1971 event pairs, 53 based on Foata normal form. 2/516 useless extension candidates. Maximal degree in co-relation 3065. Up to 487 conditions per place. [2024-06-28 03:44:14,362 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 89 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-28 03:44:14,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 1082 flow [2024-06-28 03:44:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:44:14,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 03:44:14,364 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 836 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:44:14,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 1082 flow [2024-06-28 03:44:14,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 1033 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:14,383 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 844 flow [2024-06-28 03:44:14,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=844, PETRI_PLACES=107, PETRI_TRANSITIONS=95} [2024-06-28 03:44:14,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 03:44:14,384 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 844 flow [2024-06-28 03:44:14,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:14,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:14,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:14,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:44:14,385 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:14,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1084752976, now seen corresponding path program 5 times [2024-06-28 03:44:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:14,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339898693] [2024-06-28 03:44:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:14,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:15,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:15,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339898693] [2024-06-28 03:44:15,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339898693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:15,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:15,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794306705] [2024-06-28 03:44:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:15,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:15,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:15,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:15,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 95 transitions, 844 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:15,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:15,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:15,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:15,470 INFO L124 PetriNetUnfolderBase]: 291/515 cut-off events. [2024-06-28 03:44:15,471 INFO L125 PetriNetUnfolderBase]: For 12841/12841 co-relation queries the response was YES. [2024-06-28 03:44:15,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 515 events. 291/515 cut-off events. For 12841/12841 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1981 event pairs, 52 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 3039. Up to 480 conditions per place. [2024-06-28 03:44:15,475 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2024-06-28 03:44:15,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 107 transitions, 1102 flow [2024-06-28 03:44:15,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 03:44:15,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 03:44:15,477 INFO L175 Difference]: Start difference. First operand has 107 places, 95 transitions, 844 flow. Second operand 8 states and 91 transitions. [2024-06-28 03:44:15,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 107 transitions, 1102 flow [2024-06-28 03:44:15,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 1058 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:15,496 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 865 flow [2024-06-28 03:44:15,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=865, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-06-28 03:44:15,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-28 03:44:15,497 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 865 flow [2024-06-28 03:44:15,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:15,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:15,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:15,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:44:15,498 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:15,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash 369805234, now seen corresponding path program 6 times [2024-06-28 03:44:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:15,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814260332] [2024-06-28 03:44:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:16,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814260332] [2024-06-28 03:44:16,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814260332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:16,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:16,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:44:16,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724499130] [2024-06-28 03:44:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:16,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:44:16,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:44:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:44:16,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:16,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 865 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:16,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:16,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:16,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:16,801 INFO L124 PetriNetUnfolderBase]: 289/512 cut-off events. [2024-06-28 03:44:16,801 INFO L125 PetriNetUnfolderBase]: For 12700/12700 co-relation queries the response was YES. [2024-06-28 03:44:16,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 512 events. 289/512 cut-off events. For 12700/12700 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1966 event pairs, 50 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 3020. Up to 448 conditions per place. [2024-06-28 03:44:16,805 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 25 changer transitions 0/107 dead transitions. [2024-06-28 03:44:16,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 1099 flow [2024-06-28 03:44:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:44:16,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:44:16,806 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 865 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:44:16,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 1099 flow [2024-06-28 03:44:16,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 1052 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:16,825 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 873 flow [2024-06-28 03:44:16,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-28 03:44:16,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 03:44:16,826 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 873 flow [2024-06-28 03:44:16,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:16,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:16,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:16,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:44:16,827 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:16,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1829763304, now seen corresponding path program 1 times [2024-06-28 03:44:16,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:16,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842483682] [2024-06-28 03:44:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:16,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:17,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842483682] [2024-06-28 03:44:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842483682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:17,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703635894] [2024-06-28 03:44:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:17,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:17,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 873 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:17,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:17,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:17,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:18,310 INFO L124 PetriNetUnfolderBase]: 286/507 cut-off events. [2024-06-28 03:44:18,310 INFO L125 PetriNetUnfolderBase]: For 13193/13193 co-relation queries the response was YES. [2024-06-28 03:44:18,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 507 events. 286/507 cut-off events. For 13193/13193 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1920 event pairs, 51 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 2978. Up to 480 conditions per place. [2024-06-28 03:44:18,314 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 92 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-28 03:44:18,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 106 transitions, 1101 flow [2024-06-28 03:44:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:44:18,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 03:44:18,316 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 873 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:44:18,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 106 transitions, 1101 flow [2024-06-28 03:44:18,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 1006 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:18,334 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 806 flow [2024-06-28 03:44:18,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=806, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-28 03:44:18,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 03:44:18,336 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 806 flow [2024-06-28 03:44:18,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:18,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:18,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:18,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:44:18,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:18,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:18,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2136365258, now seen corresponding path program 1 times [2024-06-28 03:44:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:18,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740091703] [2024-06-28 03:44:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:19,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:19,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740091703] [2024-06-28 03:44:19,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740091703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:19,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:19,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:19,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174859476] [2024-06-28 03:44:19,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:19,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:19,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:19,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:19,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 806 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:19,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:19,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:19,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:20,021 INFO L124 PetriNetUnfolderBase]: 289/512 cut-off events. [2024-06-28 03:44:20,021 INFO L125 PetriNetUnfolderBase]: For 13562/13562 co-relation queries the response was YES. [2024-06-28 03:44:20,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 512 events. 289/512 cut-off events. For 13562/13562 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1953 event pairs, 48 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 2948. Up to 452 conditions per place. [2024-06-28 03:44:20,025 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 96 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-06-28 03:44:20,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 1182 flow [2024-06-28 03:44:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:44:20,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:44:20,026 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 806 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:44:20,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 1182 flow [2024-06-28 03:44:20,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 120 transitions, 1154 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:20,039 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 845 flow [2024-06-28 03:44:20,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=845, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-06-28 03:44:20,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-28 03:44:20,040 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 845 flow [2024-06-28 03:44:20,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:20,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:20,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:44:20,040 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:20,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2132794213, now seen corresponding path program 1 times [2024-06-28 03:44:20,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581121881] [2024-06-28 03:44:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:20,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581121881] [2024-06-28 03:44:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581121881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:20,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:20,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:20,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358733375] [2024-06-28 03:44:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:20,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:21,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:21,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 845 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:21,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:21,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:21,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:21,298 INFO L124 PetriNetUnfolderBase]: 296/524 cut-off events. [2024-06-28 03:44:21,298 INFO L125 PetriNetUnfolderBase]: For 14853/14853 co-relation queries the response was YES. [2024-06-28 03:44:21,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 524 events. 296/524 cut-off events. For 14853/14853 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2035 event pairs, 47 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 3057. Up to 453 conditions per place. [2024-06-28 03:44:21,301 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2024-06-28 03:44:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 1213 flow [2024-06-28 03:44:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:44:21,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 03:44:21,302 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 845 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:44:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 1213 flow [2024-06-28 03:44:21,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 119 transitions, 1166 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:21,317 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 869 flow [2024-06-28 03:44:21,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-28 03:44:21,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 03:44:21,318 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 869 flow [2024-06-28 03:44:21,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:21,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:21,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:21,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:44:21,319 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:21,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2132794058, now seen corresponding path program 2 times [2024-06-28 03:44:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:21,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819013843] [2024-06-28 03:44:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819013843] [2024-06-28 03:44:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819013843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:22,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:22,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649981376] [2024-06-28 03:44:22,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:22,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:22,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:22,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:22,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:22,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:22,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:22,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:22,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:22,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:23,274 INFO L124 PetriNetUnfolderBase]: 293/519 cut-off events. [2024-06-28 03:44:23,274 INFO L125 PetriNetUnfolderBase]: For 14922/14922 co-relation queries the response was YES. [2024-06-28 03:44:23,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 519 events. 293/519 cut-off events. For 14922/14922 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1990 event pairs, 47 based on Foata normal form. 1/518 useless extension candidates. Maximal degree in co-relation 3062. Up to 472 conditions per place. [2024-06-28 03:44:23,277 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-06-28 03:44:23,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 117 transitions, 1147 flow [2024-06-28 03:44:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:44:23,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:44:23,278 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 869 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:44:23,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 117 transitions, 1147 flow [2024-06-28 03:44:23,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 117 transitions, 1085 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:23,293 INFO L231 Difference]: Finished difference. Result has 120 places, 101 transitions, 848 flow [2024-06-28 03:44:23,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=848, PETRI_PLACES=120, PETRI_TRANSITIONS=101} [2024-06-28 03:44:23,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-28 03:44:23,294 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 101 transitions, 848 flow [2024-06-28 03:44:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:23,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:23,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:23,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:44:23,295 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:23,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2136519080, now seen corresponding path program 1 times [2024-06-28 03:44:23,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:23,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818685462] [2024-06-28 03:44:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:23,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:24,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:24,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818685462] [2024-06-28 03:44:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818685462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:24,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:24,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:24,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625287070] [2024-06-28 03:44:24,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:24,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:24,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:24,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:24,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:24,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:24,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 101 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:24,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:24,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:24,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:24,591 INFO L124 PetriNetUnfolderBase]: 309/545 cut-off events. [2024-06-28 03:44:24,591 INFO L125 PetriNetUnfolderBase]: For 17402/17402 co-relation queries the response was YES. [2024-06-28 03:44:24,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 545 events. 309/545 cut-off events. For 17402/17402 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2130 event pairs, 51 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 3222. Up to 380 conditions per place. [2024-06-28 03:44:24,594 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-06-28 03:44:24,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 1246 flow [2024-06-28 03:44:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 03:44:24,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 03:44:24,595 INFO L175 Difference]: Start difference. First operand has 120 places, 101 transitions, 848 flow. Second operand 9 states and 114 transitions. [2024-06-28 03:44:24,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 1246 flow [2024-06-28 03:44:24,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 1200 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:24,612 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 935 flow [2024-06-28 03:44:24,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=935, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2024-06-28 03:44:24,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-28 03:44:24,613 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 935 flow [2024-06-28 03:44:24,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:24,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:24,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:24,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:44:24,613 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:24,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2136513283, now seen corresponding path program 2 times [2024-06-28 03:44:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:24,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390114003] [2024-06-28 03:44:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:25,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:25,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390114003] [2024-06-28 03:44:25,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390114003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:25,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:25,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:25,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036233938] [2024-06-28 03:44:25,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:25,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:25,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:25,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:25,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:25,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:25,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 935 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:25,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:25,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:25,931 INFO L124 PetriNetUnfolderBase]: 327/574 cut-off events. [2024-06-28 03:44:25,931 INFO L125 PetriNetUnfolderBase]: For 19811/19811 co-relation queries the response was YES. [2024-06-28 03:44:25,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3647 conditions, 574 events. 327/574 cut-off events. For 19811/19811 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2275 event pairs, 48 based on Foata normal form. 1/573 useless extension candidates. Maximal degree in co-relation 3588. Up to 366 conditions per place. [2024-06-28 03:44:25,935 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 50 changer transitions 0/134 dead transitions. [2024-06-28 03:44:25,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 134 transitions, 1488 flow [2024-06-28 03:44:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:44:25,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 03:44:25,936 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 935 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:44:25,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 134 transitions, 1488 flow [2024-06-28 03:44:25,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 134 transitions, 1435 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:25,965 INFO L231 Difference]: Finished difference. Result has 127 places, 116 transitions, 1145 flow [2024-06-28 03:44:25,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1145, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2024-06-28 03:44:25,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 03:44:25,966 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 1145 flow [2024-06-28 03:44:25,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:25,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:44:25,967 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:25,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2136518863, now seen corresponding path program 3 times [2024-06-28 03:44:25,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:25,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355517527] [2024-06-28 03:44:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:26,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355517527] [2024-06-28 03:44:26,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355517527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:26,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:26,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:26,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990786638] [2024-06-28 03:44:26,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:26,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:26,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:26,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:27,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:27,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 1145 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:27,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:27,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:27,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:27,272 INFO L124 PetriNetUnfolderBase]: 325/571 cut-off events. [2024-06-28 03:44:27,272 INFO L125 PetriNetUnfolderBase]: For 20816/20816 co-relation queries the response was YES. [2024-06-28 03:44:27,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 571 events. 325/571 cut-off events. For 20816/20816 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2260 event pairs, 48 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 3763. Up to 364 conditions per place. [2024-06-28 03:44:27,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 52 changer transitions 0/134 dead transitions. [2024-06-28 03:44:27,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 134 transitions, 1538 flow [2024-06-28 03:44:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:44:27,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 03:44:27,290 INFO L175 Difference]: Start difference. First operand has 127 places, 116 transitions, 1145 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:44:27,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 134 transitions, 1538 flow [2024-06-28 03:44:27,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 1463 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 03:44:27,331 INFO L231 Difference]: Finished difference. Result has 133 places, 117 transitions, 1190 flow [2024-06-28 03:44:27,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1190, PETRI_PLACES=133, PETRI_TRANSITIONS=117} [2024-06-28 03:44:27,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-28 03:44:27,332 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 117 transitions, 1190 flow [2024-06-28 03:44:27,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:27,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:27,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:27,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:44:27,333 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:27,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:27,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1077308433, now seen corresponding path program 4 times [2024-06-28 03:44:27,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:27,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210591588] [2024-06-28 03:44:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:27,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:28,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:28,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210591588] [2024-06-28 03:44:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210591588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:28,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:28,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731978559] [2024-06-28 03:44:28,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:28,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:28,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:28,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:28,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:28,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:28,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 117 transitions, 1190 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:28,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:28,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:28,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:28,584 INFO L124 PetriNetUnfolderBase]: 343/601 cut-off events. [2024-06-28 03:44:28,585 INFO L125 PetriNetUnfolderBase]: For 25135/25135 co-relation queries the response was YES. [2024-06-28 03:44:28,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4068 conditions, 601 events. 343/601 cut-off events. For 25135/25135 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2438 event pairs, 47 based on Foata normal form. 6/605 useless extension candidates. Maximal degree in co-relation 4003. Up to 491 conditions per place. [2024-06-28 03:44:28,598 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 36 changer transitions 0/138 dead transitions. [2024-06-28 03:44:28,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 1575 flow [2024-06-28 03:44:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 03:44:28,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 03:44:28,599 INFO L175 Difference]: Start difference. First operand has 133 places, 117 transitions, 1190 flow. Second operand 9 states and 112 transitions. [2024-06-28 03:44:28,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 1575 flow [2024-06-28 03:44:28,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1480 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:28,645 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 1251 flow [2024-06-28 03:44:28,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1251, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2024-06-28 03:44:28,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 03:44:28,646 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 1251 flow [2024-06-28 03:44:28,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:28,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:28,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:28,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:44:28,647 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:28,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2014355876, now seen corresponding path program 2 times [2024-06-28 03:44:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:28,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55605933] [2024-06-28 03:44:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55605933] [2024-06-28 03:44:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55605933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:29,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:29,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413111172] [2024-06-28 03:44:29,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:29,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:29,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:29,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 122 transitions, 1251 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:29,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:29,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:29,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:30,027 INFO L124 PetriNetUnfolderBase]: 349/611 cut-off events. [2024-06-28 03:44:30,027 INFO L125 PetriNetUnfolderBase]: For 24103/24103 co-relation queries the response was YES. [2024-06-28 03:44:30,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4163 conditions, 611 events. 349/611 cut-off events. For 24103/24103 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2482 event pairs, 49 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 4097. Up to 517 conditions per place. [2024-06-28 03:44:30,031 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 104 selfloop transitions, 33 changer transitions 0/139 dead transitions. [2024-06-28 03:44:30,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 1581 flow [2024-06-28 03:44:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 03:44:30,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 03:44:30,032 INFO L175 Difference]: Start difference. First operand has 137 places, 122 transitions, 1251 flow. Second operand 9 states and 110 transitions. [2024-06-28 03:44:30,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 1581 flow [2024-06-28 03:44:30,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 139 transitions, 1475 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:30,058 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 1240 flow [2024-06-28 03:44:30,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1240, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2024-06-28 03:44:30,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-28 03:44:30,059 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 1240 flow [2024-06-28 03:44:30,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:30,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:30,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:30,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:44:30,060 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:30,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash 535901480, now seen corresponding path program 3 times [2024-06-28 03:44:30,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:30,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953903161] [2024-06-28 03:44:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:31,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953903161] [2024-06-28 03:44:31,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953903161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:31,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:31,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927350708] [2024-06-28 03:44:31,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:31,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:31,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:31,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:31,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 1240 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:31,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:31,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:31,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:31,502 INFO L124 PetriNetUnfolderBase]: 355/621 cut-off events. [2024-06-28 03:44:31,502 INFO L125 PetriNetUnfolderBase]: For 25303/25303 co-relation queries the response was YES. [2024-06-28 03:44:31,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 621 events. 355/621 cut-off events. For 25303/25303 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2530 event pairs, 49 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 4139. Up to 513 conditions per place. [2024-06-28 03:44:31,507 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 103 selfloop transitions, 36 changer transitions 0/141 dead transitions. [2024-06-28 03:44:31,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 141 transitions, 1578 flow [2024-06-28 03:44:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 03:44:31,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 03:44:31,516 INFO L175 Difference]: Start difference. First operand has 139 places, 124 transitions, 1240 flow. Second operand 9 states and 112 transitions. [2024-06-28 03:44:31,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 141 transitions, 1578 flow [2024-06-28 03:44:31,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 141 transitions, 1503 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:31,565 INFO L231 Difference]: Finished difference. Result has 141 places, 126 transitions, 1270 flow [2024-06-28 03:44:31,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1270, PETRI_PLACES=141, PETRI_TRANSITIONS=126} [2024-06-28 03:44:31,565 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 03:44:31,566 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 126 transitions, 1270 flow [2024-06-28 03:44:31,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:31,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:31,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:31,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:44:31,566 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:31,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash 535901263, now seen corresponding path program 5 times [2024-06-28 03:44:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:31,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871740941] [2024-06-28 03:44:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:31,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871740941] [2024-06-28 03:44:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871740941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725459475] [2024-06-28 03:44:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:32,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:32,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:32,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 126 transitions, 1270 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:32,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:32,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:32,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:32,786 INFO L124 PetriNetUnfolderBase]: 371/647 cut-off events. [2024-06-28 03:44:32,787 INFO L125 PetriNetUnfolderBase]: For 27933/27933 co-relation queries the response was YES. [2024-06-28 03:44:32,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4477 conditions, 647 events. 371/647 cut-off events. For 27933/27933 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2670 event pairs, 47 based on Foata normal form. 2/647 useless extension candidates. Maximal degree in co-relation 4409. Up to 506 conditions per place. [2024-06-28 03:44:32,791 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 44 changer transitions 0/150 dead transitions. [2024-06-28 03:44:32,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 1781 flow [2024-06-28 03:44:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 03:44:32,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:44:32,792 INFO L175 Difference]: Start difference. First operand has 141 places, 126 transitions, 1270 flow. Second operand 9 states and 117 transitions. [2024-06-28 03:44:32,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 1781 flow [2024-06-28 03:44:32,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 150 transitions, 1696 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:32,837 INFO L231 Difference]: Finished difference. Result has 143 places, 132 transitions, 1355 flow [2024-06-28 03:44:32,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1355, PETRI_PLACES=143, PETRI_TRANSITIONS=132} [2024-06-28 03:44:32,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 03:44:32,837 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 132 transitions, 1355 flow [2024-06-28 03:44:32,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:32,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:32,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:32,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:44:32,838 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:32,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2014563483, now seen corresponding path program 6 times [2024-06-28 03:44:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:32,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838753611] [2024-06-28 03:44:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:32,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838753611] [2024-06-28 03:44:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838753611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:33,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413271099] [2024-06-28 03:44:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:33,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:33,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:33,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 1355 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:33,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:33,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:33,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:34,077 INFO L124 PetriNetUnfolderBase]: 369/644 cut-off events. [2024-06-28 03:44:34,077 INFO L125 PetriNetUnfolderBase]: For 27988/27988 co-relation queries the response was YES. [2024-06-28 03:44:34,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4486 conditions, 644 events. 369/644 cut-off events. For 27988/27988 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2643 event pairs, 47 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 4417. Up to 528 conditions per place. [2024-06-28 03:44:34,081 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2024-06-28 03:44:34,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 150 transitions, 1719 flow [2024-06-28 03:44:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 03:44:34,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 03:44:34,083 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 1355 flow. Second operand 9 states and 114 transitions. [2024-06-28 03:44:34,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 150 transitions, 1719 flow [2024-06-28 03:44:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 150 transitions, 1644 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:34,126 INFO L231 Difference]: Finished difference. Result has 148 places, 135 transitions, 1407 flow [2024-06-28 03:44:34,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1407, PETRI_PLACES=148, PETRI_TRANSITIONS=135} [2024-06-28 03:44:34,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-28 03:44:34,127 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 135 transitions, 1407 flow [2024-06-28 03:44:34,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:34,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:34,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:34,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:44:34,128 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:34,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:34,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1807208118, now seen corresponding path program 4 times [2024-06-28 03:44:34,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:34,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321747774] [2024-06-28 03:44:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:34,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:34,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321747774] [2024-06-28 03:44:34,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321747774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:34,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458601165] [2024-06-28 03:44:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:34,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:35,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:35,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 135 transitions, 1407 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:35,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:35,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:35,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:35,327 INFO L124 PetriNetUnfolderBase]: 365/638 cut-off events. [2024-06-28 03:44:35,328 INFO L125 PetriNetUnfolderBase]: For 28532/28532 co-relation queries the response was YES. [2024-06-28 03:44:35,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 638 events. 365/638 cut-off events. For 28532/28532 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2623 event pairs, 54 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 4423. Up to 601 conditions per place. [2024-06-28 03:44:35,331 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 131 selfloop transitions, 15 changer transitions 0/148 dead transitions. [2024-06-28 03:44:35,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 148 transitions, 1747 flow [2024-06-28 03:44:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:44:35,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:44:35,334 INFO L175 Difference]: Start difference. First operand has 148 places, 135 transitions, 1407 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:44:35,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 148 transitions, 1747 flow [2024-06-28 03:44:35,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1681 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:35,380 INFO L231 Difference]: Finished difference. Result has 152 places, 137 transitions, 1404 flow [2024-06-28 03:44:35,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1404, PETRI_PLACES=152, PETRI_TRANSITIONS=137} [2024-06-28 03:44:35,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-28 03:44:35,380 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 137 transitions, 1404 flow [2024-06-28 03:44:35,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:35,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:35,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:35,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:44:35,381 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:35,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:35,381 INFO L85 PathProgramCache]: Analyzing trace with hash -732395142, now seen corresponding path program 5 times [2024-06-28 03:44:35,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:35,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759434367] [2024-06-28 03:44:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:36,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759434367] [2024-06-28 03:44:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759434367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:36,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:36,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867138560] [2024-06-28 03:44:36,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:36,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:36,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:36,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:36,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:36,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 137 transitions, 1404 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:36,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:36,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:36,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:36,651 INFO L124 PetriNetUnfolderBase]: 371/648 cut-off events. [2024-06-28 03:44:36,652 INFO L125 PetriNetUnfolderBase]: For 29766/29766 co-relation queries the response was YES. [2024-06-28 03:44:36,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 648 events. 371/648 cut-off events. For 29766/29766 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2665 event pairs, 54 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 4491. Up to 607 conditions per place. [2024-06-28 03:44:36,656 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 132 selfloop transitions, 17 changer transitions 0/151 dead transitions. [2024-06-28 03:44:36,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 151 transitions, 1758 flow [2024-06-28 03:44:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:44:36,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:44:36,658 INFO L175 Difference]: Start difference. First operand has 152 places, 137 transitions, 1404 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:44:36,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 151 transitions, 1758 flow [2024-06-28 03:44:36,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 1709 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:36,709 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 1426 flow [2024-06-28 03:44:36,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1426, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2024-06-28 03:44:36,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-28 03:44:36,710 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 1426 flow [2024-06-28 03:44:36,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:36,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:36,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:36,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:44:36,711 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:36,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash -732395359, now seen corresponding path program 7 times [2024-06-28 03:44:36,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:36,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994506806] [2024-06-28 03:44:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:36,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:37,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994506806] [2024-06-28 03:44:37,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994506806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:37,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817472530] [2024-06-28 03:44:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:37,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:37,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:37,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 1426 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:37,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:37,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:37,772 INFO L124 PetriNetUnfolderBase]: 389/678 cut-off events. [2024-06-28 03:44:37,772 INFO L125 PetriNetUnfolderBase]: For 34550/34550 co-relation queries the response was YES. [2024-06-28 03:44:37,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 678 events. 389/678 cut-off events. For 34550/34550 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2836 event pairs, 56 based on Foata normal form. 6/682 useless extension candidates. Maximal degree in co-relation 4708. Up to 621 conditions per place. [2024-06-28 03:44:37,776 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2024-06-28 03:44:37,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 157 transitions, 1855 flow [2024-06-28 03:44:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:44:37,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:44:37,777 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 1426 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:44:37,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 157 transitions, 1855 flow [2024-06-28 03:44:37,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 1804 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:37,830 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 1511 flow [2024-06-28 03:44:37,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1511, PETRI_PLACES=156, PETRI_TRANSITIONS=144} [2024-06-28 03:44:37,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-28 03:44:37,831 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 1511 flow [2024-06-28 03:44:37,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:37,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:37,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:44:37,831 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:37,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash -988895652, now seen corresponding path program 6 times [2024-06-28 03:44:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668178853] [2024-06-28 03:44:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:37,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:38,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:38,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668178853] [2024-06-28 03:44:38,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668178853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:38,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:38,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:38,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694863052] [2024-06-28 03:44:38,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:38,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:38,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:38,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 144 transitions, 1511 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:38,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:38,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:38,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:39,035 INFO L124 PetriNetUnfolderBase]: 395/688 cut-off events. [2024-06-28 03:44:39,036 INFO L125 PetriNetUnfolderBase]: For 32936/32936 co-relation queries the response was YES. [2024-06-28 03:44:39,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 688 events. 395/688 cut-off events. For 32936/32936 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2898 event pairs, 56 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 4838. Up to 635 conditions per place. [2024-06-28 03:44:39,040 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 137 selfloop transitions, 21 changer transitions 0/160 dead transitions. [2024-06-28 03:44:39,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 160 transitions, 1893 flow [2024-06-28 03:44:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:44:39,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:44:39,041 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 1511 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:44:39,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 160 transitions, 1893 flow [2024-06-28 03:44:39,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 160 transitions, 1801 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:39,096 INFO L231 Difference]: Finished difference. Result has 158 places, 146 transitions, 1502 flow [2024-06-28 03:44:39,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1502, PETRI_PLACES=158, PETRI_TRANSITIONS=146} [2024-06-28 03:44:39,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-28 03:44:39,096 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 146 transitions, 1502 flow [2024-06-28 03:44:39,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:39,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:39,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:39,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:44:39,096 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:39,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 622045089, now seen corresponding path program 8 times [2024-06-28 03:44:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900713400] [2024-06-28 03:44:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:39,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:39,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900713400] [2024-06-28 03:44:39,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900713400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:39,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:39,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:39,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105263223] [2024-06-28 03:44:39,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:39,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:39,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:39,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:39,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:39,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 146 transitions, 1502 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:39,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:39,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:39,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:40,231 INFO L124 PetriNetUnfolderBase]: 403/702 cut-off events. [2024-06-28 03:44:40,232 INFO L125 PetriNetUnfolderBase]: For 36000/36000 co-relation queries the response was YES. [2024-06-28 03:44:40,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4909 conditions, 702 events. 403/702 cut-off events. For 36000/36000 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2971 event pairs, 55 based on Foata normal form. 6/706 useless extension candidates. Maximal degree in co-relation 4832. Up to 633 conditions per place. [2024-06-28 03:44:40,237 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 139 selfloop transitions, 24 changer transitions 0/165 dead transitions. [2024-06-28 03:44:40,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 165 transitions, 1944 flow [2024-06-28 03:44:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:44:40,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:44:40,238 INFO L175 Difference]: Start difference. First operand has 158 places, 146 transitions, 1502 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:44:40,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 165 transitions, 1944 flow [2024-06-28 03:44:40,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 165 transitions, 1881 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:40,298 INFO L231 Difference]: Finished difference. Result has 160 places, 150 transitions, 1572 flow [2024-06-28 03:44:40,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1572, PETRI_PLACES=160, PETRI_TRANSITIONS=150} [2024-06-28 03:44:40,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:44:40,298 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 150 transitions, 1572 flow [2024-06-28 03:44:40,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:40,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:40,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:40,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:44:40,299 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:40,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash -989103259, now seen corresponding path program 9 times [2024-06-28 03:44:40,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:40,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864524772] [2024-06-28 03:44:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:41,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:41,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864524772] [2024-06-28 03:44:41,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864524772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:41,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:41,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:41,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833944709] [2024-06-28 03:44:41,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:41,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:41,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:41,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 150 transitions, 1572 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:41,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:41,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:41,452 INFO L124 PetriNetUnfolderBase]: 415/722 cut-off events. [2024-06-28 03:44:41,452 INFO L125 PetriNetUnfolderBase]: For 34867/34867 co-relation queries the response was YES. [2024-06-28 03:44:41,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 722 events. 415/722 cut-off events. For 34867/34867 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3077 event pairs, 52 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 5096. Up to 589 conditions per place. [2024-06-28 03:44:41,457 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 124 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2024-06-28 03:44:41,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 169 transitions, 2126 flow [2024-06-28 03:44:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:44:41,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 03:44:41,461 INFO L175 Difference]: Start difference. First operand has 160 places, 150 transitions, 1572 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:44:41,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 169 transitions, 2126 flow [2024-06-28 03:44:41,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 169 transitions, 2016 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:41,529 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1646 flow [2024-06-28 03:44:41,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1646, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2024-06-28 03:44:41,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-28 03:44:41,530 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1646 flow [2024-06-28 03:44:41,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:41,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:41,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:44:41,530 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:41,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash -989103414, now seen corresponding path program 3 times [2024-06-28 03:44:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:41,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941684415] [2024-06-28 03:44:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:41,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941684415] [2024-06-28 03:44:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941684415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:42,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937986897] [2024-06-28 03:44:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:42,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:42,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:42,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1646 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:42,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:42,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:42,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:42,870 INFO L124 PetriNetUnfolderBase]: 412/717 cut-off events. [2024-06-28 03:44:42,870 INFO L125 PetriNetUnfolderBase]: For 34230/34230 co-relation queries the response was YES. [2024-06-28 03:44:42,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 717 events. 412/717 cut-off events. For 34230/34230 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3050 event pairs, 64 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 5039. Up to 693 conditions per place. [2024-06-28 03:44:42,875 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 15 changer transitions 0/163 dead transitions. [2024-06-28 03:44:42,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 163 transitions, 1986 flow [2024-06-28 03:44:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:44:42,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:44:42,880 INFO L175 Difference]: Start difference. First operand has 162 places, 155 transitions, 1646 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:44:42,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 163 transitions, 1986 flow [2024-06-28 03:44:42,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 163 transitions, 1893 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:42,957 INFO L231 Difference]: Finished difference. Result has 166 places, 155 transitions, 1588 flow [2024-06-28 03:44:42,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1588, PETRI_PLACES=166, PETRI_TRANSITIONS=155} [2024-06-28 03:44:42,957 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 03:44:42,957 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 155 transitions, 1588 flow [2024-06-28 03:44:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:42,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:42,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:42,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:44:42,958 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash -989097679, now seen corresponding path program 10 times [2024-06-28 03:44:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918832569] [2024-06-28 03:44:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918832569] [2024-06-28 03:44:43,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918832569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:43,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:43,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006577099] [2024-06-28 03:44:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:43,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:43,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:43,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:43,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:43,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 155 transitions, 1588 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:43,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:43,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:43,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:44,123 INFO L124 PetriNetUnfolderBase]: 408/711 cut-off events. [2024-06-28 03:44:44,124 INFO L125 PetriNetUnfolderBase]: For 34143/34143 co-relation queries the response was YES. [2024-06-28 03:44:44,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4962 conditions, 711 events. 408/711 cut-off events. For 34143/34143 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3032 event pairs, 51 based on Foata normal form. 2/711 useless extension candidates. Maximal degree in co-relation 4881. Up to 583 conditions per place. [2024-06-28 03:44:44,129 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 41 changer transitions 0/168 dead transitions. [2024-06-28 03:44:44,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 168 transitions, 1972 flow [2024-06-28 03:44:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:44:44,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:44:44,130 INFO L175 Difference]: Start difference. First operand has 166 places, 155 transitions, 1588 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:44:44,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 168 transitions, 1972 flow [2024-06-28 03:44:44,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 168 transitions, 1895 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:44,206 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 1603 flow [2024-06-28 03:44:44,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1603, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2024-06-28 03:44:44,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-28 03:44:44,207 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 1603 flow [2024-06-28 03:44:44,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:44,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:44,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:44,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:44:44,207 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:44,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash -989097462, now seen corresponding path program 7 times [2024-06-28 03:44:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:44,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994691416] [2024-06-28 03:44:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:44,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:45,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994691416] [2024-06-28 03:44:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994691416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:45,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821688644] [2024-06-28 03:44:45,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:45,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:45,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:45,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:45,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 1603 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:45,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:45,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:45,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:45,484 INFO L124 PetriNetUnfolderBase]: 404/705 cut-off events. [2024-06-28 03:44:45,484 INFO L125 PetriNetUnfolderBase]: For 33337/33337 co-relation queries the response was YES. [2024-06-28 03:44:45,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4876 conditions, 705 events. 404/705 cut-off events. For 33337/33337 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2997 event pairs, 54 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 4794. Up to 623 conditions per place. [2024-06-28 03:44:45,491 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 29 changer transitions 0/167 dead transitions. [2024-06-28 03:44:45,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 167 transitions, 1961 flow [2024-06-28 03:44:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 03:44:45,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 03:44:45,492 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 1603 flow. Second operand 9 states and 104 transitions. [2024-06-28 03:44:45,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 167 transitions, 1961 flow [2024-06-28 03:44:45,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 167 transitions, 1843 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:45,573 INFO L231 Difference]: Finished difference. Result has 168 places, 155 transitions, 1548 flow [2024-06-28 03:44:45,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1548, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2024-06-28 03:44:45,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 03:44:45,574 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 1548 flow [2024-06-28 03:44:45,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:45,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:45,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:45,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:44:45,574 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:45,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1689250213, now seen corresponding path program 1 times [2024-06-28 03:44:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:45,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264511430] [2024-06-28 03:44:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:45,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:46,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264511430] [2024-06-28 03:44:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264511430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:46,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:46,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044004679] [2024-06-28 03:44:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:46,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:46,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:46,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 1548 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:46,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:46,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:46,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:47,318 INFO L124 PetriNetUnfolderBase]: 415/726 cut-off events. [2024-06-28 03:44:47,318 INFO L125 PetriNetUnfolderBase]: For 37031/37031 co-relation queries the response was YES. [2024-06-28 03:44:47,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5057 conditions, 726 events. 415/726 cut-off events. For 37031/37031 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3132 event pairs, 40 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 4974. Up to 630 conditions per place. [2024-06-28 03:44:47,322 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 155 selfloop transitions, 24 changer transitions 0/181 dead transitions. [2024-06-28 03:44:47,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 2102 flow [2024-06-28 03:44:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 03:44:47,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 03:44:47,323 INFO L175 Difference]: Start difference. First operand has 168 places, 155 transitions, 1548 flow. Second operand 11 states and 128 transitions. [2024-06-28 03:44:47,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 2102 flow [2024-06-28 03:44:47,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 181 transitions, 1965 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:47,394 INFO L231 Difference]: Finished difference. Result has 170 places, 157 transitions, 1493 flow [2024-06-28 03:44:47,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1493, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2024-06-28 03:44:47,395 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-28 03:44:47,395 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 1493 flow [2024-06-28 03:44:47,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:47,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:47,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:47,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:44:47,396 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:47,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1689310663, now seen corresponding path program 2 times [2024-06-28 03:44:47,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629818917] [2024-06-28 03:44:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:48,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:48,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629818917] [2024-06-28 03:44:48,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629818917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:48,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:48,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:48,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954990190] [2024-06-28 03:44:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:48,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:48,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:48,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:48,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:48,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 157 transitions, 1493 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:48,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:48,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:48,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:49,044 INFO L124 PetriNetUnfolderBase]: 419/734 cut-off events. [2024-06-28 03:44:49,045 INFO L125 PetriNetUnfolderBase]: For 38317/38317 co-relation queries the response was YES. [2024-06-28 03:44:49,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4997 conditions, 734 events. 419/734 cut-off events. For 38317/38317 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3179 event pairs, 57 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4914. Up to 669 conditions per place. [2024-06-28 03:44:49,049 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 155 selfloop transitions, 23 changer transitions 0/180 dead transitions. [2024-06-28 03:44:49,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 180 transitions, 1931 flow [2024-06-28 03:44:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:44:49,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:44:49,050 INFO L175 Difference]: Start difference. First operand has 170 places, 157 transitions, 1493 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:44:49,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 180 transitions, 1931 flow [2024-06-28 03:44:49,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 180 transitions, 1876 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:49,131 INFO L231 Difference]: Finished difference. Result has 174 places, 158 transitions, 1506 flow [2024-06-28 03:44:49,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1506, PETRI_PLACES=174, PETRI_TRANSITIONS=158} [2024-06-28 03:44:49,131 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 03:44:49,131 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 158 transitions, 1506 flow [2024-06-28 03:44:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:49,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:49,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:49,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:44:49,132 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:49,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1250535369, now seen corresponding path program 1 times [2024-06-28 03:44:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:49,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083508675] [2024-06-28 03:44:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083508675] [2024-06-28 03:44:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083508675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:50,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:50,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:50,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20199338] [2024-06-28 03:44:50,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:50,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:50,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:50,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 158 transitions, 1506 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:50,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:50,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:50,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:50,631 INFO L124 PetriNetUnfolderBase]: 441/770 cut-off events. [2024-06-28 03:44:50,631 INFO L125 PetriNetUnfolderBase]: For 45166/45166 co-relation queries the response was YES. [2024-06-28 03:44:50,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5359 conditions, 770 events. 441/770 cut-off events. For 45166/45166 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3380 event pairs, 61 based on Foata normal form. 4/772 useless extension candidates. Maximal degree in co-relation 5274. Up to 678 conditions per place. [2024-06-28 03:44:50,637 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 28 changer transitions 0/183 dead transitions. [2024-06-28 03:44:50,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 183 transitions, 2120 flow [2024-06-28 03:44:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:44:50,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:44:50,638 INFO L175 Difference]: Start difference. First operand has 174 places, 158 transitions, 1506 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:44:50,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 183 transitions, 2120 flow [2024-06-28 03:44:50,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 183 transitions, 2070 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:50,744 INFO L231 Difference]: Finished difference. Result has 175 places, 163 transitions, 1619 flow [2024-06-28 03:44:50,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1619, PETRI_PLACES=175, PETRI_TRANSITIONS=163} [2024-06-28 03:44:50,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 03:44:50,745 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 163 transitions, 1619 flow [2024-06-28 03:44:50,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:50,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:50,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:50,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:44:50,745 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:50,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1692107173, now seen corresponding path program 3 times [2024-06-28 03:44:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419101424] [2024-06-28 03:44:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419101424] [2024-06-28 03:44:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419101424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991925108] [2024-06-28 03:44:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:52,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:52,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:52,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 163 transitions, 1619 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:52,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:52,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:52,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:52,625 INFO L124 PetriNetUnfolderBase]: 438/765 cut-off events. [2024-06-28 03:44:52,626 INFO L125 PetriNetUnfolderBase]: For 41464/41464 co-relation queries the response was YES. [2024-06-28 03:44:52,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5323 conditions, 765 events. 438/765 cut-off events. For 41464/41464 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3335 event pairs, 63 based on Foata normal form. 2/765 useless extension candidates. Maximal degree in co-relation 5237. Up to 712 conditions per place. [2024-06-28 03:44:52,631 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 160 selfloop transitions, 19 changer transitions 0/181 dead transitions. [2024-06-28 03:44:52,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 181 transitions, 2029 flow [2024-06-28 03:44:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:44:52,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:44:52,632 INFO L175 Difference]: Start difference. First operand has 175 places, 163 transitions, 1619 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:44:52,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 181 transitions, 2029 flow [2024-06-28 03:44:52,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 181 transitions, 1934 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:52,729 INFO L231 Difference]: Finished difference. Result has 179 places, 163 transitions, 1566 flow [2024-06-28 03:44:52,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1566, PETRI_PLACES=179, PETRI_TRANSITIONS=163} [2024-06-28 03:44:52,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 03:44:52,729 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 163 transitions, 1566 flow [2024-06-28 03:44:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:52,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:52,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:52,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:44:52,730 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:52,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:52,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1807582793, now seen corresponding path program 2 times [2024-06-28 03:44:52,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:52,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549971274] [2024-06-28 03:44:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:52,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:53,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:53,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549971274] [2024-06-28 03:44:53,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549971274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:53,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:53,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123235035] [2024-06-28 03:44:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:53,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:53,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:53,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:53,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:53,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 163 transitions, 1566 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:53,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:53,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:53,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:54,310 INFO L124 PetriNetUnfolderBase]: 494/855 cut-off events. [2024-06-28 03:44:54,310 INFO L125 PetriNetUnfolderBase]: For 58466/58466 co-relation queries the response was YES. [2024-06-28 03:44:54,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6402 conditions, 855 events. 494/855 cut-off events. For 58466/58466 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3827 event pairs, 51 based on Foata normal form. 2/855 useless extension candidates. Maximal degree in co-relation 6314. Up to 375 conditions per place. [2024-06-28 03:44:54,317 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 83 changer transitions 0/196 dead transitions. [2024-06-28 03:44:54,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 196 transitions, 2546 flow [2024-06-28 03:44:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 03:44:54,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-28 03:44:54,317 INFO L175 Difference]: Start difference. First operand has 179 places, 163 transitions, 1566 flow. Second operand 10 states and 136 transitions. [2024-06-28 03:44:54,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 196 transitions, 2546 flow [2024-06-28 03:44:54,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 196 transitions, 2502 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:54,438 INFO L231 Difference]: Finished difference. Result has 182 places, 173 transitions, 1945 flow [2024-06-28 03:44:54,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1945, PETRI_PLACES=182, PETRI_TRANSITIONS=173} [2024-06-28 03:44:54,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-28 03:44:54,439 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 173 transitions, 1945 flow [2024-06-28 03:44:54,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:54,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:54,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:54,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:44:54,439 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:54,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1807576097, now seen corresponding path program 1 times [2024-06-28 03:44:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105337552] [2024-06-28 03:44:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:55,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:55,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105337552] [2024-06-28 03:44:55,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105337552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:55,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:55,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:55,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085357100] [2024-06-28 03:44:55,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:55,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:55,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:55,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:55,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:55,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:55,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 173 transitions, 1945 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:55,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:55,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:55,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:56,253 INFO L124 PetriNetUnfolderBase]: 497/860 cut-off events. [2024-06-28 03:44:56,253 INFO L125 PetriNetUnfolderBase]: For 60261/60261 co-relation queries the response was YES. [2024-06-28 03:44:56,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6820 conditions, 860 events. 497/860 cut-off events. For 60261/60261 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3884 event pairs, 63 based on Foata normal form. 1/859 useless extension candidates. Maximal degree in co-relation 6729. Up to 640 conditions per place. [2024-06-28 03:44:56,259 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 125 selfloop transitions, 64 changer transitions 0/191 dead transitions. [2024-06-28 03:44:56,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 191 transitions, 2412 flow [2024-06-28 03:44:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:44:56,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:44:56,260 INFO L175 Difference]: Start difference. First operand has 182 places, 173 transitions, 1945 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:44:56,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 191 transitions, 2412 flow [2024-06-28 03:44:56,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 2285 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 03:44:56,386 INFO L231 Difference]: Finished difference. Result has 188 places, 175 transitions, 2002 flow [2024-06-28 03:44:56,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=188, PETRI_TRANSITIONS=175} [2024-06-28 03:44:56,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-28 03:44:56,387 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 175 transitions, 2002 flow [2024-06-28 03:44:56,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:56,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:56,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:56,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:44:56,388 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:56,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1961193435, now seen corresponding path program 2 times [2024-06-28 03:44:56,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:56,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095137531] [2024-06-28 03:44:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:56,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:57,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:57,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095137531] [2024-06-28 03:44:57,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095137531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:57,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:57,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:57,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215962900] [2024-06-28 03:44:57,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:57,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:57,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:57,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 175 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:57,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:57,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:57,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:58,153 INFO L124 PetriNetUnfolderBase]: 495/857 cut-off events. [2024-06-28 03:44:58,153 INFO L125 PetriNetUnfolderBase]: For 59708/59708 co-relation queries the response was YES. [2024-06-28 03:44:58,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6759 conditions, 857 events. 495/857 cut-off events. For 59708/59708 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3867 event pairs, 62 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 6666. Up to 551 conditions per place. [2024-06-28 03:44:58,159 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 82 changer transitions 0/192 dead transitions. [2024-06-28 03:44:58,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 192 transitions, 2553 flow [2024-06-28 03:44:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 03:44:58,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-28 03:44:58,160 INFO L175 Difference]: Start difference. First operand has 188 places, 175 transitions, 2002 flow. Second operand 9 states and 121 transitions. [2024-06-28 03:44:58,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 192 transitions, 2553 flow [2024-06-28 03:44:58,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 2404 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:58,313 INFO L231 Difference]: Finished difference. Result has 189 places, 176 transitions, 2045 flow [2024-06-28 03:44:58,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2045, PETRI_PLACES=189, PETRI_TRANSITIONS=176} [2024-06-28 03:44:58,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-28 03:44:58,314 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 176 transitions, 2045 flow [2024-06-28 03:44:58,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:58,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:58,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:58,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:44:58,315 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:58,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1807403303, now seen corresponding path program 3 times [2024-06-28 03:44:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:58,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70417676] [2024-06-28 03:44:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:58,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:59,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:59,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70417676] [2024-06-28 03:44:59,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70417676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:59,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:59,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:59,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005238847] [2024-06-28 03:44:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:59,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:59,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:44:59,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 176 transitions, 2045 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:59,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:59,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:44:59,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:00,035 INFO L124 PetriNetUnfolderBase]: 517/893 cut-off events. [2024-06-28 03:45:00,035 INFO L125 PetriNetUnfolderBase]: For 69774/69774 co-relation queries the response was YES. [2024-06-28 03:45:00,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7192 conditions, 893 events. 517/893 cut-off events. For 69774/69774 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4054 event pairs, 60 based on Foata normal form. 4/895 useless extension candidates. Maximal degree in co-relation 7098. Up to 393 conditions per place. [2024-06-28 03:45:00,041 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 81 changer transitions 0/206 dead transitions. [2024-06-28 03:45:00,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 206 transitions, 3073 flow [2024-06-28 03:45:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 03:45:00,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-28 03:45:00,042 INFO L175 Difference]: Start difference. First operand has 189 places, 176 transitions, 2045 flow. Second operand 10 states and 141 transitions. [2024-06-28 03:45:00,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 206 transitions, 3073 flow [2024-06-28 03:45:00,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 206 transitions, 2875 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:00,211 INFO L231 Difference]: Finished difference. Result has 191 places, 181 transitions, 2124 flow [2024-06-28 03:45:00,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2124, PETRI_PLACES=191, PETRI_TRANSITIONS=181} [2024-06-28 03:45:00,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 03:45:00,212 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 181 transitions, 2124 flow [2024-06-28 03:45:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:00,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:00,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:00,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:45:00,213 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:00,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1807398343, now seen corresponding path program 4 times [2024-06-28 03:45:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474614420] [2024-06-28 03:45:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:00,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:01,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474614420] [2024-06-28 03:45:01,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474614420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:01,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:01,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795858889] [2024-06-28 03:45:01,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:01,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:01,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:01,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 181 transitions, 2124 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:01,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:01,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:01,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:01,921 INFO L124 PetriNetUnfolderBase]: 521/901 cut-off events. [2024-06-28 03:45:01,922 INFO L125 PetriNetUnfolderBase]: For 67119/67119 co-relation queries the response was YES. [2024-06-28 03:45:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7268 conditions, 901 events. 521/901 cut-off events. For 67119/67119 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4105 event pairs, 81 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 7174. Up to 816 conditions per place. [2024-06-28 03:45:01,929 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-28 03:45:01,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 198 transitions, 2580 flow [2024-06-28 03:45:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:45:01,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:45:01,930 INFO L175 Difference]: Start difference. First operand has 191 places, 181 transitions, 2124 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:45:01,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 198 transitions, 2580 flow [2024-06-28 03:45:02,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 198 transitions, 2387 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:02,078 INFO L231 Difference]: Finished difference. Result has 196 places, 183 transitions, 2044 flow [2024-06-28 03:45:02,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=196, PETRI_TRANSITIONS=183} [2024-06-28 03:45:02,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-28 03:45:02,078 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 183 transitions, 2044 flow [2024-06-28 03:45:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:02,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:02,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:02,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:45:02,079 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:02,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:02,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1807576283, now seen corresponding path program 4 times [2024-06-28 03:45:02,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994248807] [2024-06-28 03:45:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:02,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:03,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:03,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994248807] [2024-06-28 03:45:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994248807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:03,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:03,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587952639] [2024-06-28 03:45:03,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:03,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:03,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:03,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 183 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:03,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:03,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:03,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:03,718 INFO L124 PetriNetUnfolderBase]: 513/889 cut-off events. [2024-06-28 03:45:03,719 INFO L125 PetriNetUnfolderBase]: For 65100/65100 co-relation queries the response was YES. [2024-06-28 03:45:03,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6792 conditions, 889 events. 513/889 cut-off events. For 65100/65100 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4049 event pairs, 60 based on Foata normal form. 4/891 useless extension candidates. Maximal degree in co-relation 6696. Up to 397 conditions per place. [2024-06-28 03:45:03,727 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 120 selfloop transitions, 84 changer transitions 0/206 dead transitions. [2024-06-28 03:45:03,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 206 transitions, 2864 flow [2024-06-28 03:45:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:45:03,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-28 03:45:03,728 INFO L175 Difference]: Start difference. First operand has 196 places, 183 transitions, 2044 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:45:03,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 206 transitions, 2864 flow [2024-06-28 03:45:03,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 206 transitions, 2752 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:03,870 INFO L231 Difference]: Finished difference. Result has 197 places, 183 transitions, 2107 flow [2024-06-28 03:45:03,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2107, PETRI_PLACES=197, PETRI_TRANSITIONS=183} [2024-06-28 03:45:03,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 03:45:03,871 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 183 transitions, 2107 flow [2024-06-28 03:45:03,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:03,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:03,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:45:03,871 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:03,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash -969605065, now seen corresponding path program 5 times [2024-06-28 03:45:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900937140] [2024-06-28 03:45:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:04,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900937140] [2024-06-28 03:45:04,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900937140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:04,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:04,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:04,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475697289] [2024-06-28 03:45:04,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:04,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:04,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:04,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:04,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 183 transitions, 2107 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:04,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:04,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:04,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:05,321 INFO L124 PetriNetUnfolderBase]: 529/915 cut-off events. [2024-06-28 03:45:05,322 INFO L125 PetriNetUnfolderBase]: For 68834/68834 co-relation queries the response was YES. [2024-06-28 03:45:05,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7216 conditions, 915 events. 529/915 cut-off events. For 68834/68834 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4231 event pairs, 66 based on Foata normal form. 2/915 useless extension candidates. Maximal degree in co-relation 7120. Up to 762 conditions per place. [2024-06-28 03:45:05,329 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 44 changer transitions 0/205 dead transitions. [2024-06-28 03:45:05,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 205 transitions, 2759 flow [2024-06-28 03:45:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:45:05,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:45:05,330 INFO L175 Difference]: Start difference. First operand has 197 places, 183 transitions, 2107 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:45:05,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 205 transitions, 2759 flow [2024-06-28 03:45:05,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 205 transitions, 2567 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:05,460 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 2100 flow [2024-06-28 03:45:05,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2100, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2024-06-28 03:45:05,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-28 03:45:05,460 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 2100 flow [2024-06-28 03:45:05,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:05,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:05,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:05,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:45:05,461 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:05,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash -969605251, now seen corresponding path program 3 times [2024-06-28 03:45:05,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:05,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767365823] [2024-06-28 03:45:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:06,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:06,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767365823] [2024-06-28 03:45:06,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767365823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:06,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:06,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:06,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058829665] [2024-06-28 03:45:06,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:06,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:06,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:06,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:06,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:06,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:06,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 2100 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:06,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:06,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:06,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:07,081 INFO L124 PetriNetUnfolderBase]: 527/912 cut-off events. [2024-06-28 03:45:07,081 INFO L125 PetriNetUnfolderBase]: For 66866/66866 co-relation queries the response was YES. [2024-06-28 03:45:07,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7073 conditions, 912 events. 527/912 cut-off events. For 66866/66866 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4212 event pairs, 70 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 6976. Up to 774 conditions per place. [2024-06-28 03:45:07,089 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 46 changer transitions 0/202 dead transitions. [2024-06-28 03:45:07,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 202 transitions, 2536 flow [2024-06-28 03:45:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:45:07,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 03:45:07,090 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 2100 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:45:07,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 202 transitions, 2536 flow [2024-06-28 03:45:07,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 202 transitions, 2431 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:07,237 INFO L231 Difference]: Finished difference. Result has 201 places, 187 transitions, 2094 flow [2024-06-28 03:45:07,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2094, PETRI_PLACES=201, PETRI_TRANSITIONS=187} [2024-06-28 03:45:07,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 03:45:07,238 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 187 transitions, 2094 flow [2024-06-28 03:45:07,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:07,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:07,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:07,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:45:07,238 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:07,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1973215417, now seen corresponding path program 6 times [2024-06-28 03:45:07,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:07,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639818407] [2024-06-28 03:45:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:07,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:08,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:08,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639818407] [2024-06-28 03:45:08,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639818407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:08,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:08,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:08,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560137013] [2024-06-28 03:45:08,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:08,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:08,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:08,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:08,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 187 transitions, 2094 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:08,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:08,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:08,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:08,757 INFO L124 PetriNetUnfolderBase]: 579/996 cut-off events. [2024-06-28 03:45:08,757 INFO L125 PetriNetUnfolderBase]: For 89614/89614 co-relation queries the response was YES. [2024-06-28 03:45:08,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8249 conditions, 996 events. 579/996 cut-off events. For 89614/89614 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4671 event pairs, 78 based on Foata normal form. 4/998 useless extension candidates. Maximal degree in co-relation 8150. Up to 759 conditions per place. [2024-06-28 03:45:08,766 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 55 changer transitions 0/221 dead transitions. [2024-06-28 03:45:08,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 221 transitions, 3228 flow [2024-06-28 03:45:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 03:45:08,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-28 03:45:08,767 INFO L175 Difference]: Start difference. First operand has 201 places, 187 transitions, 2094 flow. Second operand 10 states and 134 transitions. [2024-06-28 03:45:08,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 221 transitions, 3228 flow [2024-06-28 03:45:08,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 221 transitions, 3120 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:08,932 INFO L231 Difference]: Finished difference. Result has 202 places, 198 transitions, 2376 flow [2024-06-28 03:45:08,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2376, PETRI_PLACES=202, PETRI_TRANSITIONS=198} [2024-06-28 03:45:08,932 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-28 03:45:08,932 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 198 transitions, 2376 flow [2024-06-28 03:45:08,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:08,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:08,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:45:08,933 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:08,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash -969425575, now seen corresponding path program 7 times [2024-06-28 03:45:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:08,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638924583] [2024-06-28 03:45:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:08,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638924583] [2024-06-28 03:45:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638924583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919091292] [2024-06-28 03:45:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:09,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:09,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:10,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:10,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 198 transitions, 2376 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:10,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:10,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:10,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:10,501 INFO L124 PetriNetUnfolderBase]: 585/1006 cut-off events. [2024-06-28 03:45:10,501 INFO L125 PetriNetUnfolderBase]: For 86749/86749 co-relation queries the response was YES. [2024-06-28 03:45:10,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 1006 events. 585/1006 cut-off events. For 86749/86749 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4735 event pairs, 74 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 8316. Up to 767 conditions per place. [2024-06-28 03:45:10,511 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 61 changer transitions 0/223 dead transitions. [2024-06-28 03:45:10,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 223 transitions, 3310 flow [2024-06-28 03:45:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:45:10,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 03:45:10,512 INFO L175 Difference]: Start difference. First operand has 202 places, 198 transitions, 2376 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:45:10,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 223 transitions, 3310 flow [2024-06-28 03:45:10,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 223 transitions, 3175 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:10,654 INFO L231 Difference]: Finished difference. Result has 208 places, 201 transitions, 2442 flow [2024-06-28 03:45:10,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2442, PETRI_PLACES=208, PETRI_TRANSITIONS=201} [2024-06-28 03:45:10,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 03:45:10,654 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 201 transitions, 2442 flow [2024-06-28 03:45:10,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:10,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:10,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:10,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:45:10,655 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:10,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:10,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2127422441, now seen corresponding path program 5 times [2024-06-28 03:45:10,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:10,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50386422] [2024-06-28 03:45:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:10,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:11,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:11,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50386422] [2024-06-28 03:45:11,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50386422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:11,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:11,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:11,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941303395] [2024-06-28 03:45:11,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:11,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:11,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:12,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:12,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 201 transitions, 2442 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:12,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:12,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:12,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:12,397 INFO L124 PetriNetUnfolderBase]: 589/1014 cut-off events. [2024-06-28 03:45:12,397 INFO L125 PetriNetUnfolderBase]: For 89190/89190 co-relation queries the response was YES. [2024-06-28 03:45:12,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8492 conditions, 1014 events. 589/1014 cut-off events. For 89190/89190 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4794 event pairs, 91 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 8391. Up to 965 conditions per place. [2024-06-28 03:45:12,407 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 188 selfloop transitions, 24 changer transitions 0/214 dead transitions. [2024-06-28 03:45:12,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 2912 flow [2024-06-28 03:45:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:45:12,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:45:12,410 INFO L175 Difference]: Start difference. First operand has 208 places, 201 transitions, 2442 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:45:12,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 2912 flow [2024-06-28 03:45:12,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 214 transitions, 2789 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:12,557 INFO L231 Difference]: Finished difference. Result has 212 places, 202 transitions, 2391 flow [2024-06-28 03:45:12,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2391, PETRI_PLACES=212, PETRI_TRANSITIONS=202} [2024-06-28 03:45:12,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 03:45:12,558 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 202 transitions, 2391 flow [2024-06-28 03:45:12,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:12,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:12,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:12,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:45:12,559 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:12,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash -962929897, now seen corresponding path program 1 times [2024-06-28 03:45:12,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:12,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334567586] [2024-06-28 03:45:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334567586] [2024-06-28 03:45:14,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334567586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:14,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:14,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103757859] [2024-06-28 03:45:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:14,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:14,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 202 transitions, 2391 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:14,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:14,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:14,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:14,777 INFO L124 PetriNetUnfolderBase]: 593/1022 cut-off events. [2024-06-28 03:45:14,777 INFO L125 PetriNetUnfolderBase]: For 91566/91566 co-relation queries the response was YES. [2024-06-28 03:45:14,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8446 conditions, 1022 events. 593/1022 cut-off events. For 91566/91566 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4842 event pairs, 86 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 8344. Up to 943 conditions per place. [2024-06-28 03:45:14,786 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 184 selfloop transitions, 32 changer transitions 0/218 dead transitions. [2024-06-28 03:45:14,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 2883 flow [2024-06-28 03:45:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:45:14,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:45:14,788 INFO L175 Difference]: Start difference. First operand has 212 places, 202 transitions, 2391 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:45:14,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 218 transitions, 2883 flow [2024-06-28 03:45:14,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 218 transitions, 2797 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:14,940 INFO L231 Difference]: Finished difference. Result has 213 places, 205 transitions, 2414 flow [2024-06-28 03:45:14,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2414, PETRI_PLACES=213, PETRI_TRANSITIONS=205} [2024-06-28 03:45:14,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 03:45:14,941 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 205 transitions, 2414 flow [2024-06-28 03:45:14,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:14,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:14,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:14,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:45:14,941 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:14,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:14,942 INFO L85 PathProgramCache]: Analyzing trace with hash -963169465, now seen corresponding path program 8 times [2024-06-28 03:45:14,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:14,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450125979] [2024-06-28 03:45:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:14,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:16,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450125979] [2024-06-28 03:45:16,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450125979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:16,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:16,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:16,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970264005] [2024-06-28 03:45:16,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:16,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:16,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:16,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:16,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:16,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:16,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 205 transitions, 2414 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:16,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:16,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:16,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:16,805 INFO L124 PetriNetUnfolderBase]: 609/1048 cut-off events. [2024-06-28 03:45:16,805 INFO L125 PetriNetUnfolderBase]: For 98825/98825 co-relation queries the response was YES. [2024-06-28 03:45:16,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8804 conditions, 1048 events. 609/1048 cut-off events. For 98825/98825 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5014 event pairs, 76 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 8701. Up to 889 conditions per place. [2024-06-28 03:45:16,817 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 46 changer transitions 0/228 dead transitions. [2024-06-28 03:45:16,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 228 transitions, 3261 flow [2024-06-28 03:45:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:45:16,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 03:45:16,818 INFO L175 Difference]: Start difference. First operand has 213 places, 205 transitions, 2414 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:45:16,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 228 transitions, 3261 flow [2024-06-28 03:45:16,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 228 transitions, 3174 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:45:16,992 INFO L231 Difference]: Finished difference. Result has 217 places, 209 transitions, 2516 flow [2024-06-28 03:45:16,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2516, PETRI_PLACES=217, PETRI_TRANSITIONS=209} [2024-06-28 03:45:16,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-28 03:45:16,993 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 209 transitions, 2516 flow [2024-06-28 03:45:16,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:16,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:16,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:16,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:45:16,993 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:16,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:16,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471527, now seen corresponding path program 9 times [2024-06-28 03:45:16,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657583116] [2024-06-28 03:45:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:16,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:18,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657583116] [2024-06-28 03:45:18,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657583116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:18,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:18,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:18,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730107898] [2024-06-28 03:45:18,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:18,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:18,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:18,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:18,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:18,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 209 transitions, 2516 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:18,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:18,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:18,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:18,915 INFO L124 PetriNetUnfolderBase]: 601/1036 cut-off events. [2024-06-28 03:45:18,915 INFO L125 PetriNetUnfolderBase]: For 97672/97672 co-relation queries the response was YES. [2024-06-28 03:45:18,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 1036 events. 601/1036 cut-off events. For 97672/97672 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4963 event pairs, 74 based on Foata normal form. 4/1038 useless extension candidates. Maximal degree in co-relation 8429. Up to 885 conditions per place. [2024-06-28 03:45:18,922 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 45 changer transitions 0/227 dead transitions. [2024-06-28 03:45:18,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 227 transitions, 3143 flow [2024-06-28 03:45:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:45:18,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:45:18,923 INFO L175 Difference]: Start difference. First operand has 217 places, 209 transitions, 2516 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:45:18,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 227 transitions, 3143 flow [2024-06-28 03:45:19,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 227 transitions, 2959 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:19,120 INFO L231 Difference]: Finished difference. Result has 220 places, 209 transitions, 2430 flow [2024-06-28 03:45:19,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2430, PETRI_PLACES=220, PETRI_TRANSITIONS=209} [2024-06-28 03:45:19,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 03:45:19,121 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 209 transitions, 2430 flow [2024-06-28 03:45:19,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:19,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:19,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:19,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:45:19,121 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:19,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:19,121 INFO L85 PathProgramCache]: Analyzing trace with hash -188867129, now seen corresponding path program 2 times [2024-06-28 03:45:19,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:19,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083601660] [2024-06-28 03:45:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:19,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:20,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:20,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083601660] [2024-06-28 03:45:20,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083601660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:20,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:20,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308335010] [2024-06-28 03:45:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:20,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:20,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:20,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:20,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:20,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 209 transitions, 2430 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:20,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:20,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:20,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:20,511 INFO L124 PetriNetUnfolderBase]: 605/1044 cut-off events. [2024-06-28 03:45:20,511 INFO L125 PetriNetUnfolderBase]: For 96355/96355 co-relation queries the response was YES. [2024-06-28 03:45:20,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8498 conditions, 1044 events. 605/1044 cut-off events. For 96355/96355 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5006 event pairs, 81 based on Foata normal form. 2/1044 useless extension candidates. Maximal degree in co-relation 8393. Up to 1009 conditions per place. [2024-06-28 03:45:20,527 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 205 selfloop transitions, 14 changer transitions 0/221 dead transitions. [2024-06-28 03:45:20,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 221 transitions, 2908 flow [2024-06-28 03:45:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:45:20,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:45:20,529 INFO L175 Difference]: Start difference. First operand has 220 places, 209 transitions, 2430 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:45:20,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 221 transitions, 2908 flow [2024-06-28 03:45:20,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 221 transitions, 2820 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:20,731 INFO L231 Difference]: Finished difference. Result has 221 places, 210 transitions, 2392 flow [2024-06-28 03:45:20,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2392, PETRI_PLACES=221, PETRI_TRANSITIONS=210} [2024-06-28 03:45:20,731 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 03:45:20,731 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 210 transitions, 2392 flow [2024-06-28 03:45:20,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:20,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:20,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:45:20,732 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:20,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1465356841, now seen corresponding path program 3 times [2024-06-28 03:45:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931572988] [2024-06-28 03:45:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:21,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:21,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931572988] [2024-06-28 03:45:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931572988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:21,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:21,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8542890] [2024-06-28 03:45:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:21,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:21,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 210 transitions, 2392 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:21,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:21,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:21,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:22,230 INFO L124 PetriNetUnfolderBase]: 612/1057 cut-off events. [2024-06-28 03:45:22,230 INFO L125 PetriNetUnfolderBase]: For 98975/98975 co-relation queries the response was YES. [2024-06-28 03:45:22,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8538 conditions, 1057 events. 612/1057 cut-off events. For 98975/98975 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5093 event pairs, 81 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 8432. Up to 1018 conditions per place. [2024-06-28 03:45:22,241 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 208 selfloop transitions, 17 changer transitions 0/227 dead transitions. [2024-06-28 03:45:22,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 227 transitions, 2915 flow [2024-06-28 03:45:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:45:22,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 03:45:22,242 INFO L175 Difference]: Start difference. First operand has 221 places, 210 transitions, 2392 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:45:22,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 227 transitions, 2915 flow [2024-06-28 03:45:22,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 227 transitions, 2870 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:22,441 INFO L231 Difference]: Finished difference. Result has 225 places, 216 transitions, 2456 flow [2024-06-28 03:45:22,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2456, PETRI_PLACES=225, PETRI_TRANSITIONS=216} [2024-06-28 03:45:22,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 03:45:22,441 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 216 transitions, 2456 flow [2024-06-28 03:45:22,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:22,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:22,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:45:22,442 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:22,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash -933597211, now seen corresponding path program 4 times [2024-06-28 03:45:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577676647] [2024-06-28 03:45:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:23,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577676647] [2024-06-28 03:45:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577676647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:23,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107971398] [2024-06-28 03:45:23,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:23,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:23,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:23,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 216 transitions, 2456 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:23,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:23,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:23,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:23,748 INFO L124 PetriNetUnfolderBase]: 616/1065 cut-off events. [2024-06-28 03:45:23,748 INFO L125 PetriNetUnfolderBase]: For 102064/102064 co-relation queries the response was YES. [2024-06-28 03:45:23,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8756 conditions, 1065 events. 616/1065 cut-off events. For 102064/102064 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5144 event pairs, 81 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 8647. Up to 1030 conditions per place. [2024-06-28 03:45:23,757 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 211 selfloop transitions, 14 changer transitions 0/227 dead transitions. [2024-06-28 03:45:23,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 227 transitions, 2948 flow [2024-06-28 03:45:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:45:23,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:45:23,759 INFO L175 Difference]: Start difference. First operand has 225 places, 216 transitions, 2456 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:45:23,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 227 transitions, 2948 flow [2024-06-28 03:45:23,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 227 transitions, 2909 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:45:23,998 INFO L231 Difference]: Finished difference. Result has 230 places, 217 transitions, 2471 flow [2024-06-28 03:45:23,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2471, PETRI_PLACES=230, PETRI_TRANSITIONS=217} [2024-06-28 03:45:23,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 03:45:23,999 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 217 transitions, 2471 flow [2024-06-28 03:45:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:23,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:23,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:45:23,999 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:23,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash -597433947, now seen corresponding path program 6 times [2024-06-28 03:45:24,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:24,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940778990] [2024-06-28 03:45:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:25,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940778990] [2024-06-28 03:45:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940778990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:25,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:25,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875906885] [2024-06-28 03:45:25,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:25,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:25,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 217 transitions, 2471 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:25,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:25,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:25,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:25,643 INFO L124 PetriNetUnfolderBase]: 613/1060 cut-off events. [2024-06-28 03:45:25,644 INFO L125 PetriNetUnfolderBase]: For 100302/100302 co-relation queries the response was YES. [2024-06-28 03:45:25,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 1060 events. 613/1060 cut-off events. For 100302/100302 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5123 event pairs, 82 based on Foata normal form. 2/1060 useless extension candidates. Maximal degree in co-relation 8499. Up to 1030 conditions per place. [2024-06-28 03:45:25,656 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 209 selfloop transitions, 15 changer transitions 0/226 dead transitions. [2024-06-28 03:45:25,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 226 transitions, 2939 flow [2024-06-28 03:45:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:45:25,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:45:25,657 INFO L175 Difference]: Start difference. First operand has 230 places, 217 transitions, 2471 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:45:25,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 226 transitions, 2939 flow [2024-06-28 03:45:25,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 226 transitions, 2895 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:25,867 INFO L231 Difference]: Finished difference. Result has 232 places, 217 transitions, 2461 flow [2024-06-28 03:45:25,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2461, PETRI_PLACES=232, PETRI_TRANSITIONS=217} [2024-06-28 03:45:25,867 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-28 03:45:25,867 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 217 transitions, 2461 flow [2024-06-28 03:45:25,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:25,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:25,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:25,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:45:25,868 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:25,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1969792711, now seen corresponding path program 10 times [2024-06-28 03:45:25,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:25,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547877253] [2024-06-28 03:45:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:25,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:26,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:26,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547877253] [2024-06-28 03:45:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547877253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:26,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:26,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:26,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437557700] [2024-06-28 03:45:26,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:26,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:26,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:26,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:26,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 217 transitions, 2461 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:26,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:26,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:26,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:27,167 INFO L124 PetriNetUnfolderBase]: 645/1112 cut-off events. [2024-06-28 03:45:27,167 INFO L125 PetriNetUnfolderBase]: For 118528/118528 co-relation queries the response was YES. [2024-06-28 03:45:27,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9342 conditions, 1112 events. 645/1112 cut-off events. For 118528/118528 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5437 event pairs, 77 based on Foata normal form. 4/1114 useless extension candidates. Maximal degree in co-relation 9231. Up to 1009 conditions per place. [2024-06-28 03:45:27,178 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 210 selfloop transitions, 26 changer transitions 0/238 dead transitions. [2024-06-28 03:45:27,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 238 transitions, 3264 flow [2024-06-28 03:45:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:45:27,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:45:27,179 INFO L175 Difference]: Start difference. First operand has 232 places, 217 transitions, 2461 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:45:27,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 238 transitions, 3264 flow [2024-06-28 03:45:27,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 238 transitions, 3178 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:27,414 INFO L231 Difference]: Finished difference. Result has 233 places, 222 transitions, 2566 flow [2024-06-28 03:45:27,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2566, PETRI_PLACES=233, PETRI_TRANSITIONS=222} [2024-06-28 03:45:27,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-28 03:45:27,415 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 222 transitions, 2566 flow [2024-06-28 03:45:27,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:27,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:27,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:27,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:45:27,416 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:27,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -361074137, now seen corresponding path program 11 times [2024-06-28 03:45:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:27,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158487600] [2024-06-28 03:45:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:27,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:28,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:28,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158487600] [2024-06-28 03:45:28,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158487600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:28,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:28,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:28,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734199719] [2024-06-28 03:45:28,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:28,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:28,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:28,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:28,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:28,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:28,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 222 transitions, 2566 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:28,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:28,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:28,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:28,753 INFO L124 PetriNetUnfolderBase]: 641/1106 cut-off events. [2024-06-28 03:45:28,753 INFO L125 PetriNetUnfolderBase]: For 111638/111638 co-relation queries the response was YES. [2024-06-28 03:45:28,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9222 conditions, 1106 events. 641/1106 cut-off events. For 111638/111638 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5379 event pairs, 88 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 9111. Up to 1058 conditions per place. [2024-06-28 03:45:28,763 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 214 selfloop transitions, 20 changer transitions 0/236 dead transitions. [2024-06-28 03:45:28,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 3110 flow [2024-06-28 03:45:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:45:28,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:45:28,764 INFO L175 Difference]: Start difference. First operand has 233 places, 222 transitions, 2566 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:45:28,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 3110 flow [2024-06-28 03:45:28,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 236 transitions, 2984 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:28,997 INFO L231 Difference]: Finished difference. Result has 235 places, 224 transitions, 2533 flow [2024-06-28 03:45:28,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2533, PETRI_PLACES=235, PETRI_TRANSITIONS=224} [2024-06-28 03:45:28,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 03:45:28,997 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 224 transitions, 2533 flow [2024-06-28 03:45:28,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:28,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:28,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:45:28,998 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:28,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -369348347, now seen corresponding path program 12 times [2024-06-28 03:45:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474733424] [2024-06-28 03:45:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:28,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474733424] [2024-06-28 03:45:29,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474733424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:29,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:29,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449455166] [2024-06-28 03:45:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:29,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:29,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:29,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:29,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 224 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:29,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:29,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:29,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:30,409 INFO L124 PetriNetUnfolderBase]: 637/1100 cut-off events. [2024-06-28 03:45:30,410 INFO L125 PetriNetUnfolderBase]: For 108072/108072 co-relation queries the response was YES. [2024-06-28 03:45:30,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 1100 events. 637/1100 cut-off events. For 108072/108072 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5359 event pairs, 79 based on Foata normal form. 2/1100 useless extension candidates. Maximal degree in co-relation 8795. Up to 1002 conditions per place. [2024-06-28 03:45:30,420 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 28 changer transitions 0/241 dead transitions. [2024-06-28 03:45:30,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 241 transitions, 3248 flow [2024-06-28 03:45:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:45:30,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:45:30,421 INFO L175 Difference]: Start difference. First operand has 235 places, 224 transitions, 2533 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:45:30,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 241 transitions, 3248 flow [2024-06-28 03:45:30,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 241 transitions, 3171 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:30,652 INFO L231 Difference]: Finished difference. Result has 237 places, 226 transitions, 2565 flow [2024-06-28 03:45:30,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2565, PETRI_PLACES=237, PETRI_TRANSITIONS=226} [2024-06-28 03:45:30,653 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-28 03:45:30,653 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 226 transitions, 2565 flow [2024-06-28 03:45:30,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:30,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:30,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:30,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:45:30,653 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:30,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2097100455, now seen corresponding path program 13 times [2024-06-28 03:45:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:30,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613055754] [2024-06-28 03:45:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:31,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613055754] [2024-06-28 03:45:31,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613055754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:31,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:31,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:31,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836354644] [2024-06-28 03:45:31,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:31,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:31,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:31,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:31,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 226 transitions, 2565 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:31,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:31,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:31,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:32,064 INFO L124 PetriNetUnfolderBase]: 659/1136 cut-off events. [2024-06-28 03:45:32,064 INFO L125 PetriNetUnfolderBase]: For 122377/122377 co-relation queries the response was YES. [2024-06-28 03:45:32,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9434 conditions, 1136 events. 659/1136 cut-off events. For 122377/122377 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5585 event pairs, 71 based on Foata normal form. 4/1138 useless extension candidates. Maximal degree in co-relation 9322. Up to 896 conditions per place. [2024-06-28 03:45:32,074 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 195 selfloop transitions, 52 changer transitions 0/249 dead transitions. [2024-06-28 03:45:32,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 249 transitions, 3566 flow [2024-06-28 03:45:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:45:32,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 03:45:32,076 INFO L175 Difference]: Start difference. First operand has 237 places, 226 transitions, 2565 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:45:32,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 249 transitions, 3566 flow [2024-06-28 03:45:32,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 3486 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:32,291 INFO L231 Difference]: Finished difference. Result has 240 places, 231 transitions, 2738 flow [2024-06-28 03:45:32,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2738, PETRI_PLACES=240, PETRI_TRANSITIONS=231} [2024-06-28 03:45:32,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 03:45:32,291 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 231 transitions, 2738 flow [2024-06-28 03:45:32,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:32,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:32,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:32,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:45:32,292 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:32,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash -597249497, now seen corresponding path program 14 times [2024-06-28 03:45:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:32,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293360988] [2024-06-28 03:45:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:33,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:33,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293360988] [2024-06-28 03:45:33,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293360988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:33,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:33,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:33,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291198030] [2024-06-28 03:45:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:33,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:33,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:33,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 231 transitions, 2738 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:33,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:33,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:33,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:33,856 INFO L124 PetriNetUnfolderBase]: 695/1194 cut-off events. [2024-06-28 03:45:33,857 INFO L125 PetriNetUnfolderBase]: For 138922/138922 co-relation queries the response was YES. [2024-06-28 03:45:33,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10556 conditions, 1194 events. 695/1194 cut-off events. For 138922/138922 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5914 event pairs, 75 based on Foata normal form. 2/1194 useless extension candidates. Maximal degree in co-relation 10443. Up to 919 conditions per place. [2024-06-28 03:45:33,866 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 57 changer transitions 0/257 dead transitions. [2024-06-28 03:45:33,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 257 transitions, 3979 flow [2024-06-28 03:45:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:45:33,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:45:33,867 INFO L175 Difference]: Start difference. First operand has 240 places, 231 transitions, 2738 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:45:33,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 257 transitions, 3979 flow [2024-06-28 03:45:34,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 257 transitions, 3636 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:34,112 INFO L231 Difference]: Finished difference. Result has 242 places, 238 transitions, 2741 flow [2024-06-28 03:45:34,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2741, PETRI_PLACES=242, PETRI_TRANSITIONS=238} [2024-06-28 03:45:34,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-28 03:45:34,113 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 238 transitions, 2741 flow [2024-06-28 03:45:34,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:34,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:34,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:45:34,113 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:34,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2103529545, now seen corresponding path program 15 times [2024-06-28 03:45:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:34,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631579165] [2024-06-28 03:45:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:35,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631579165] [2024-06-28 03:45:35,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631579165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:35,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:35,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:35,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986225258] [2024-06-28 03:45:35,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:35,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:35,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:35,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:35,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:35,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:35,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 238 transitions, 2741 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:35,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:35,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:35,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:35,523 INFO L124 PetriNetUnfolderBase]: 707/1214 cut-off events. [2024-06-28 03:45:35,523 INFO L125 PetriNetUnfolderBase]: For 145364/145364 co-relation queries the response was YES. [2024-06-28 03:45:35,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10392 conditions, 1214 events. 707/1214 cut-off events. For 145364/145364 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6029 event pairs, 85 based on Foata normal form. 4/1216 useless extension candidates. Maximal degree in co-relation 10279. Up to 1099 conditions per place. [2024-06-28 03:45:35,534 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 30 changer transitions 0/258 dead transitions. [2024-06-28 03:45:35,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 258 transitions, 3562 flow [2024-06-28 03:45:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:45:35,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:45:35,535 INFO L175 Difference]: Start difference. First operand has 242 places, 238 transitions, 2741 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:45:35,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 258 transitions, 3562 flow [2024-06-28 03:45:35,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 258 transitions, 3435 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:45:35,851 INFO L231 Difference]: Finished difference. Result has 247 places, 241 transitions, 2761 flow [2024-06-28 03:45:35,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2761, PETRI_PLACES=247, PETRI_TRANSITIONS=241} [2024-06-28 03:45:35,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 03:45:35,852 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 241 transitions, 2761 flow [2024-06-28 03:45:35,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:35,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:35,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:35,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:45:35,852 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:35,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash -590993387, now seen corresponding path program 16 times [2024-06-28 03:45:35,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:35,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306205835] [2024-06-28 03:45:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306205835] [2024-06-28 03:45:36,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306205835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:36,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:36,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316179332] [2024-06-28 03:45:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:36,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:36,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:36,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 241 transitions, 2761 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:36,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:36,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:36,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:37,445 INFO L124 PetriNetUnfolderBase]: 703/1208 cut-off events. [2024-06-28 03:45:37,446 INFO L125 PetriNetUnfolderBase]: For 138416/138416 co-relation queries the response was YES. [2024-06-28 03:45:37,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10073 conditions, 1208 events. 703/1208 cut-off events. For 138416/138416 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5988 event pairs, 85 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 9959. Up to 1098 conditions per place. [2024-06-28 03:45:37,456 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 32 changer transitions 0/259 dead transitions. [2024-06-28 03:45:37,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 259 transitions, 3537 flow [2024-06-28 03:45:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:45:37,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:45:37,457 INFO L175 Difference]: Start difference. First operand has 247 places, 241 transitions, 2761 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:45:37,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 259 transitions, 3537 flow [2024-06-28 03:45:37,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 259 transitions, 3351 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:37,792 INFO L231 Difference]: Finished difference. Result has 247 places, 243 transitions, 2705 flow [2024-06-28 03:45:37,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2579, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2705, PETRI_PLACES=247, PETRI_TRANSITIONS=243} [2024-06-28 03:45:37,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 03:45:37,793 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 243 transitions, 2705 flow [2024-06-28 03:45:37,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:37,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:37,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:37,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:45:37,793 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:37,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash -590753819, now seen corresponding path program 5 times [2024-06-28 03:45:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:37,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737423573] [2024-06-28 03:45:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:38,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:38,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737423573] [2024-06-28 03:45:38,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737423573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:38,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:38,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:38,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316780205] [2024-06-28 03:45:38,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:38,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:38,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:38,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:38,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:38,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:38,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 243 transitions, 2705 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:38,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:38,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:38,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:39,270 INFO L124 PetriNetUnfolderBase]: 700/1203 cut-off events. [2024-06-28 03:45:39,270 INFO L125 PetriNetUnfolderBase]: For 136576/136576 co-relation queries the response was YES. [2024-06-28 03:45:39,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9718 conditions, 1203 events. 700/1203 cut-off events. For 136576/136576 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5963 event pairs, 93 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 9605. Up to 1161 conditions per place. [2024-06-28 03:45:39,281 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 234 selfloop transitions, 18 changer transitions 0/254 dead transitions. [2024-06-28 03:45:39,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 254 transitions, 3237 flow [2024-06-28 03:45:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:45:39,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:45:39,282 INFO L175 Difference]: Start difference. First operand has 247 places, 243 transitions, 2705 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:45:39,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 254 transitions, 3237 flow [2024-06-28 03:45:39,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 254 transitions, 3139 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:39,596 INFO L231 Difference]: Finished difference. Result has 249 places, 243 transitions, 2647 flow [2024-06-28 03:45:39,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2647, PETRI_PLACES=249, PETRI_TRANSITIONS=243} [2024-06-28 03:45:39,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 03:45:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 243 transitions, 2647 flow [2024-06-28 03:45:39,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:39,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:39,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:45:39,598 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:39,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1099431381, now seen corresponding path program 17 times [2024-06-28 03:45:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115735598] [2024-06-28 03:45:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:40,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:40,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115735598] [2024-06-28 03:45:40,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115735598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:40,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:40,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:40,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885397468] [2024-06-28 03:45:40,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:40,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:40,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:40,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 243 transitions, 2647 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:40,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:40,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:40,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:41,114 INFO L124 PetriNetUnfolderBase]: 696/1197 cut-off events. [2024-06-28 03:45:41,114 INFO L125 PetriNetUnfolderBase]: For 134105/134105 co-relation queries the response was YES. [2024-06-28 03:45:41,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9461 conditions, 1197 events. 696/1197 cut-off events. For 134105/134105 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5968 event pairs, 74 based on Foata normal form. 2/1197 useless extension candidates. Maximal degree in co-relation 9347. Up to 1036 conditions per place. [2024-06-28 03:45:41,163 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 45 changer transitions 0/263 dead transitions. [2024-06-28 03:45:41,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 263 transitions, 3270 flow [2024-06-28 03:45:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:45:41,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:45:41,164 INFO L175 Difference]: Start difference. First operand has 249 places, 243 transitions, 2647 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:45:41,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 263 transitions, 3270 flow [2024-06-28 03:45:41,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 263 transitions, 3180 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:41,460 INFO L231 Difference]: Finished difference. Result has 253 places, 249 transitions, 2752 flow [2024-06-28 03:45:41,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2752, PETRI_PLACES=253, PETRI_TRANSITIONS=249} [2024-06-28 03:45:41,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 03:45:41,461 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 249 transitions, 2752 flow [2024-06-28 03:45:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:45:41,461 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:41,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash -200609356, now seen corresponding path program 1 times [2024-06-28 03:45:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826940202] [2024-06-28 03:45:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:41,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:42,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826940202] [2024-06-28 03:45:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826940202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:42,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26504095] [2024-06-28 03:45:42,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:43,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:43,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 249 transitions, 2752 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:43,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:43,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:43,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:43,549 INFO L124 PetriNetUnfolderBase]: 707/1218 cut-off events. [2024-06-28 03:45:43,549 INFO L125 PetriNetUnfolderBase]: For 141907/141907 co-relation queries the response was YES. [2024-06-28 03:45:43,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9901 conditions, 1218 events. 707/1218 cut-off events. For 141907/141907 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6074 event pairs, 79 based on Foata normal form. 2/1218 useless extension candidates. Maximal degree in co-relation 9785. Up to 1086 conditions per place. [2024-06-28 03:45:43,561 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 249 selfloop transitions, 26 changer transitions 0/277 dead transitions. [2024-06-28 03:45:43,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 277 transitions, 3576 flow [2024-06-28 03:45:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:45:43,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:45:43,562 INFO L175 Difference]: Start difference. First operand has 253 places, 249 transitions, 2752 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:45:43,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 277 transitions, 3576 flow [2024-06-28 03:45:43,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 277 transitions, 3437 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:43,926 INFO L231 Difference]: Finished difference. Result has 258 places, 251 transitions, 2715 flow [2024-06-28 03:45:43,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2715, PETRI_PLACES=258, PETRI_TRANSITIONS=251} [2024-06-28 03:45:43,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 03:45:43,927 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 251 transitions, 2715 flow [2024-06-28 03:45:43,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:43,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:43,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:43,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:45:43,927 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:43,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -198735406, now seen corresponding path program 2 times [2024-06-28 03:45:43,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:43,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000975475] [2024-06-28 03:45:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:45,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:45,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000975475] [2024-06-28 03:45:45,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000975475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:45,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:45,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975305104] [2024-06-28 03:45:45,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:45,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:45,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:45,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 251 transitions, 2715 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:45,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:45,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:45,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:46,088 INFO L124 PetriNetUnfolderBase]: 721/1244 cut-off events. [2024-06-28 03:45:46,088 INFO L125 PetriNetUnfolderBase]: For 152974/152974 co-relation queries the response was YES. [2024-06-28 03:45:46,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10083 conditions, 1244 events. 721/1244 cut-off events. For 152974/152974 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6265 event pairs, 96 based on Foata normal form. 2/1244 useless extension candidates. Maximal degree in co-relation 9968. Up to 1151 conditions per place. [2024-06-28 03:45:46,099 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 250 selfloop transitions, 28 changer transitions 0/280 dead transitions. [2024-06-28 03:45:46,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 280 transitions, 3573 flow [2024-06-28 03:45:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:45:46,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:45:46,101 INFO L175 Difference]: Start difference. First operand has 258 places, 251 transitions, 2715 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:45:46,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 280 transitions, 3573 flow [2024-06-28 03:45:46,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 280 transitions, 3480 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:46,389 INFO L231 Difference]: Finished difference. Result has 262 places, 255 transitions, 2756 flow [2024-06-28 03:45:46,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2756, PETRI_PLACES=262, PETRI_TRANSITIONS=255} [2024-06-28 03:45:46,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 03:45:46,390 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 255 transitions, 2756 flow [2024-06-28 03:45:46,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:46,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:46,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:45:46,390 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:46,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 829027660, now seen corresponding path program 3 times [2024-06-28 03:45:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:46,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779549127] [2024-06-28 03:45:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:47,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:47,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779549127] [2024-06-28 03:45:47,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779549127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:47,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:47,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:47,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645603928] [2024-06-28 03:45:47,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:47,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:47,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:47,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:47,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 255 transitions, 2756 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:47,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:47,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:47,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:48,063 INFO L124 PetriNetUnfolderBase]: 722/1247 cut-off events. [2024-06-28 03:45:48,063 INFO L125 PetriNetUnfolderBase]: For 157138/157138 co-relation queries the response was YES. [2024-06-28 03:45:48,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9910 conditions, 1247 events. 722/1247 cut-off events. For 157138/157138 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6300 event pairs, 95 based on Foata normal form. 4/1249 useless extension candidates. Maximal degree in co-relation 9794. Up to 1165 conditions per place. [2024-06-28 03:45:48,080 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 245 selfloop transitions, 27 changer transitions 0/274 dead transitions. [2024-06-28 03:45:48,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 274 transitions, 3368 flow [2024-06-28 03:45:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 03:45:48,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 03:45:48,081 INFO L175 Difference]: Start difference. First operand has 262 places, 255 transitions, 2756 flow. Second operand 10 states and 117 transitions. [2024-06-28 03:45:48,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 274 transitions, 3368 flow [2024-06-28 03:45:48,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 274 transitions, 3313 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:48,476 INFO L231 Difference]: Finished difference. Result has 265 places, 256 transitions, 2779 flow [2024-06-28 03:45:48,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2779, PETRI_PLACES=265, PETRI_TRANSITIONS=256} [2024-06-28 03:45:48,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 03:45:48,477 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 256 transitions, 2779 flow [2024-06-28 03:45:48,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:48,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:48,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:45:48,477 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:48,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash 915715750, now seen corresponding path program 4 times [2024-06-28 03:45:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:48,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517737202] [2024-06-28 03:45:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:50,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:50,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517737202] [2024-06-28 03:45:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517737202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:50,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669831255] [2024-06-28 03:45:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:50,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:50,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 256 transitions, 2779 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:50,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:50,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:50,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:50,790 INFO L124 PetriNetUnfolderBase]: 719/1242 cut-off events. [2024-06-28 03:45:50,790 INFO L125 PetriNetUnfolderBase]: For 147757/147757 co-relation queries the response was YES. [2024-06-28 03:45:50,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9776 conditions, 1242 events. 719/1242 cut-off events. For 147757/147757 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6276 event pairs, 92 based on Foata normal form. 2/1242 useless extension candidates. Maximal degree in co-relation 9658. Up to 1167 conditions per place. [2024-06-28 03:45:50,838 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 23 changer transitions 0/276 dead transitions. [2024-06-28 03:45:50,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 276 transitions, 3383 flow [2024-06-28 03:45:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:45:50,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:45:50,839 INFO L175 Difference]: Start difference. First operand has 265 places, 256 transitions, 2779 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:45:50,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 276 transitions, 3383 flow [2024-06-28 03:45:51,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 276 transitions, 3313 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:51,197 INFO L231 Difference]: Finished difference. Result has 268 places, 256 transitions, 2759 flow [2024-06-28 03:45:51,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2759, PETRI_PLACES=268, PETRI_TRANSITIONS=256} [2024-06-28 03:45:51,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 03:45:51,198 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 256 transitions, 2759 flow [2024-06-28 03:45:51,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:51,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:51,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:45:51,199 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:51,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash 915869355, now seen corresponding path program 1 times [2024-06-28 03:45:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:51,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875142685] [2024-06-28 03:45:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:51,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:52,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:52,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875142685] [2024-06-28 03:45:52,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875142685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:52,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:52,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622671330] [2024-06-28 03:45:52,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:52,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:52,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:52,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 256 transitions, 2759 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:52,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:52,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:52,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:53,287 INFO L124 PetriNetUnfolderBase]: 715/1236 cut-off events. [2024-06-28 03:45:53,287 INFO L125 PetriNetUnfolderBase]: For 144640/144640 co-relation queries the response was YES. [2024-06-28 03:45:53,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 1236 events. 715/1236 cut-off events. For 144640/144640 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6233 event pairs, 93 based on Foata normal form. 2/1236 useless extension candidates. Maximal degree in co-relation 9462. Up to 1144 conditions per place. [2024-06-28 03:45:53,296 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 243 selfloop transitions, 29 changer transitions 0/274 dead transitions. [2024-06-28 03:45:53,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 274 transitions, 3357 flow [2024-06-28 03:45:53,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:45:53,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:45:53,297 INFO L175 Difference]: Start difference. First operand has 268 places, 256 transitions, 2759 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:45:53,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 274 transitions, 3357 flow [2024-06-28 03:45:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 274 transitions, 3263 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:53,617 INFO L231 Difference]: Finished difference. Result has 268 places, 256 transitions, 2732 flow [2024-06-28 03:45:53,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2732, PETRI_PLACES=268, PETRI_TRANSITIONS=256} [2024-06-28 03:45:53,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 03:45:53,617 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 256 transitions, 2732 flow [2024-06-28 03:45:53,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:53,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:53,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:53,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:45:53,618 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:53,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:53,619 INFO L85 PathProgramCache]: Analyzing trace with hash 673033017, now seen corresponding path program 1 times [2024-06-28 03:45:53,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:53,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891379197] [2024-06-28 03:45:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:53,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891379197] [2024-06-28 03:45:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891379197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:55,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711923445] [2024-06-28 03:45:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:55,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:55,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:55,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:55,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 256 transitions, 2732 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:55,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:55,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:55,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:55,955 INFO L124 PetriNetUnfolderBase]: 719/1244 cut-off events. [2024-06-28 03:45:55,955 INFO L125 PetriNetUnfolderBase]: For 147800/147800 co-relation queries the response was YES. [2024-06-28 03:45:55,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 1244 events. 719/1244 cut-off events. For 147800/147800 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6339 event pairs, 69 based on Foata normal form. 2/1244 useless extension candidates. Maximal degree in co-relation 9469. Up to 1060 conditions per place. [2024-06-28 03:45:55,972 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 219 selfloop transitions, 54 changer transitions 0/275 dead transitions. [2024-06-28 03:45:55,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 275 transitions, 3336 flow [2024-06-28 03:45:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:45:55,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:45:55,973 INFO L175 Difference]: Start difference. First operand has 268 places, 256 transitions, 2732 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:45:55,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 275 transitions, 3336 flow [2024-06-28 03:45:56,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 275 transitions, 3283 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:56,306 INFO L231 Difference]: Finished difference. Result has 270 places, 257 transitions, 2799 flow [2024-06-28 03:45:56,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2799, PETRI_PLACES=270, PETRI_TRANSITIONS=257} [2024-06-28 03:45:56,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-28 03:45:56,306 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 257 transitions, 2799 flow [2024-06-28 03:45:56,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:56,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:56,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:45:56,307 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:56,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash 200492519, now seen corresponding path program 2 times [2024-06-28 03:45:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:56,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265281718] [2024-06-28 03:45:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:57,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:57,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265281718] [2024-06-28 03:45:57,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265281718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:57,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:57,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816473117] [2024-06-28 03:45:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:57,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:57,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:58,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:45:58,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 257 transitions, 2799 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:58,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:58,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:45:58,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:58,527 INFO L124 PetriNetUnfolderBase]: 725/1254 cut-off events. [2024-06-28 03:45:58,527 INFO L125 PetriNetUnfolderBase]: For 151498/151498 co-relation queries the response was YES. [2024-06-28 03:45:58,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9792 conditions, 1254 events. 725/1254 cut-off events. For 151498/151498 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6365 event pairs, 73 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 9672. Up to 601 conditions per place. [2024-06-28 03:45:58,544 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 134 changer transitions 0/282 dead transitions. [2024-06-28 03:45:58,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 282 transitions, 3803 flow [2024-06-28 03:45:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:45:58,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 03:45:58,546 INFO L175 Difference]: Start difference. First operand has 270 places, 257 transitions, 2799 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:45:58,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 282 transitions, 3803 flow [2024-06-28 03:45:58,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 282 transitions, 3693 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:58,964 INFO L231 Difference]: Finished difference. Result has 273 places, 259 transitions, 3002 flow [2024-06-28 03:45:58,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3002, PETRI_PLACES=273, PETRI_TRANSITIONS=259} [2024-06-28 03:45:58,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 03:45:58,964 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 259 transitions, 3002 flow [2024-06-28 03:45:58,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:58,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:58,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:58,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:45:58,965 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:58,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash 194774724, now seen corresponding path program 5 times [2024-06-28 03:45:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525022902] [2024-06-28 03:45:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:58,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:00,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:00,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525022902] [2024-06-28 03:46:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525022902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:00,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527156145] [2024-06-28 03:46:00,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:00,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:00,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:00,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:00,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:00,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:00,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 259 transitions, 3002 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:00,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:00,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:00,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:01,072 INFO L124 PetriNetUnfolderBase]: 736/1275 cut-off events. [2024-06-28 03:46:01,072 INFO L125 PetriNetUnfolderBase]: For 163591/163591 co-relation queries the response was YES. [2024-06-28 03:46:01,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10392 conditions, 1275 events. 736/1275 cut-off events. For 163591/163591 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6517 event pairs, 84 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 10271. Up to 1022 conditions per place. [2024-06-28 03:46:01,090 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 72 changer transitions 0/281 dead transitions. [2024-06-28 03:46:01,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 281 transitions, 3832 flow [2024-06-28 03:46:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:46:01,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 03:46:01,092 INFO L175 Difference]: Start difference. First operand has 273 places, 259 transitions, 3002 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:46:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 281 transitions, 3832 flow [2024-06-28 03:46:01,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 281 transitions, 3536 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:01,521 INFO L231 Difference]: Finished difference. Result has 275 places, 261 transitions, 2904 flow [2024-06-28 03:46:01,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2904, PETRI_PLACES=275, PETRI_TRANSITIONS=261} [2024-06-28 03:46:01,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 03:46:01,521 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 261 transitions, 2904 flow [2024-06-28 03:46:01,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:01,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:01,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:46:01,521 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:01,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash 672823271, now seen corresponding path program 3 times [2024-06-28 03:46:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:01,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892808107] [2024-06-28 03:46:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:02,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:02,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892808107] [2024-06-28 03:46:02,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892808107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:02,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:02,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825059949] [2024-06-28 03:46:02,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:02,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:02,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:02,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 261 transitions, 2904 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:02,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:02,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:02,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:03,519 INFO L124 PetriNetUnfolderBase]: 732/1269 cut-off events. [2024-06-28 03:46:03,520 INFO L125 PetriNetUnfolderBase]: For 159256/159256 co-relation queries the response was YES. [2024-06-28 03:46:03,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9988 conditions, 1269 events. 732/1269 cut-off events. For 159256/159256 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6504 event pairs, 79 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 9866. Up to 619 conditions per place. [2024-06-28 03:46:03,531 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 126 changer transitions 0/284 dead transitions. [2024-06-28 03:46:03,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 284 transitions, 3880 flow [2024-06-28 03:46:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:46:03,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-28 03:46:03,533 INFO L175 Difference]: Start difference. First operand has 275 places, 261 transitions, 2904 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:46:03,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 284 transitions, 3880 flow [2024-06-28 03:46:03,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 284 transitions, 3731 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:46:03,941 INFO L231 Difference]: Finished difference. Result has 280 places, 261 transitions, 3012 flow [2024-06-28 03:46:03,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3012, PETRI_PLACES=280, PETRI_TRANSITIONS=261} [2024-06-28 03:46:03,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 03:46:03,942 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 261 transitions, 3012 flow [2024-06-28 03:46:03,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:03,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:03,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:46:03,943 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:03,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash 672817536, now seen corresponding path program 6 times [2024-06-28 03:46:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:03,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185508347] [2024-06-28 03:46:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:05,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:05,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185508347] [2024-06-28 03:46:05,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185508347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:05,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:05,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:05,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834123972] [2024-06-28 03:46:05,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:05,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:05,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:05,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:06,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:06,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 261 transitions, 3012 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:06,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:06,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:06,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:06,528 INFO L124 PetriNetUnfolderBase]: 742/1287 cut-off events. [2024-06-28 03:46:06,528 INFO L125 PetriNetUnfolderBase]: For 163157/163157 co-relation queries the response was YES. [2024-06-28 03:46:06,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10287 conditions, 1287 events. 742/1287 cut-off events. For 163157/163157 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6640 event pairs, 86 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 10163. Up to 1036 conditions per place. [2024-06-28 03:46:06,540 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 207 selfloop transitions, 75 changer transitions 0/284 dead transitions. [2024-06-28 03:46:06,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 284 transitions, 3658 flow [2024-06-28 03:46:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:46:06,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:46:06,541 INFO L175 Difference]: Start difference. First operand has 280 places, 261 transitions, 3012 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:46:06,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 284 transitions, 3658 flow [2024-06-28 03:46:06,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 284 transitions, 3369 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:46:06,980 INFO L231 Difference]: Finished difference. Result has 281 places, 265 transitions, 2957 flow [2024-06-28 03:46:06,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2957, PETRI_PLACES=281, PETRI_TRANSITIONS=265} [2024-06-28 03:46:06,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:46:06,981 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 265 transitions, 2957 flow [2024-06-28 03:46:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:06,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:06,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:06,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:46:06,982 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:06,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 194928329, now seen corresponding path program 4 times [2024-06-28 03:46:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:06,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569552001] [2024-06-28 03:46:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569552001] [2024-06-28 03:46:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569552001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385649820] [2024-06-28 03:46:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:08,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:08,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 265 transitions, 2957 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:08,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:08,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:08,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:09,529 INFO L124 PetriNetUnfolderBase]: 738/1281 cut-off events. [2024-06-28 03:46:09,530 INFO L125 PetriNetUnfolderBase]: For 158487/158487 co-relation queries the response was YES. [2024-06-28 03:46:09,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10004 conditions, 1281 events. 738/1281 cut-off events. For 158487/158487 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6588 event pairs, 85 based on Foata normal form. 2/1281 useless extension candidates. Maximal degree in co-relation 9878. Up to 634 conditions per place. [2024-06-28 03:46:09,542 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 123 changer transitions 0/287 dead transitions. [2024-06-28 03:46:09,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 287 transitions, 3769 flow [2024-06-28 03:46:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:46:09,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-28 03:46:09,543 INFO L175 Difference]: Start difference. First operand has 281 places, 265 transitions, 2957 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:46:09,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 287 transitions, 3769 flow [2024-06-28 03:46:09,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 287 transitions, 3631 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:09,976 INFO L231 Difference]: Finished difference. Result has 284 places, 265 transitions, 3070 flow [2024-06-28 03:46:09,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3070, PETRI_PLACES=284, PETRI_TRANSITIONS=265} [2024-06-28 03:46:09,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 03:46:09,976 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 265 transitions, 3070 flow [2024-06-28 03:46:09,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:09,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:09,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:09,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:46:09,977 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:09,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -832980902, now seen corresponding path program 7 times [2024-06-28 03:46:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497063831] [2024-06-28 03:46:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:09,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:11,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:11,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497063831] [2024-06-28 03:46:11,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497063831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:11,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:11,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451399734] [2024-06-28 03:46:11,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:11,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:11,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:11,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 265 transitions, 3070 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:11,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:11,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:11,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:12,194 INFO L124 PetriNetUnfolderBase]: 745/1294 cut-off events. [2024-06-28 03:46:12,195 INFO L125 PetriNetUnfolderBase]: For 162885/162885 co-relation queries the response was YES. [2024-06-28 03:46:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 1294 events. 745/1294 cut-off events. For 162885/162885 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6673 event pairs, 88 based on Foata normal form. 2/1294 useless extension candidates. Maximal degree in co-relation 10147. Up to 1059 conditions per place. [2024-06-28 03:46:12,208 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 73 changer transitions 0/286 dead transitions. [2024-06-28 03:46:12,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 3728 flow [2024-06-28 03:46:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:46:12,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:46:12,209 INFO L175 Difference]: Start difference. First operand has 284 places, 265 transitions, 3070 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:46:12,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 3728 flow [2024-06-28 03:46:12,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 286 transitions, 3469 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:46:12,696 INFO L231 Difference]: Finished difference. Result has 285 places, 268 transitions, 3003 flow [2024-06-28 03:46:12,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3003, PETRI_PLACES=285, PETRI_TRANSITIONS=268} [2024-06-28 03:46:12,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 03:46:12,697 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 268 transitions, 3003 flow [2024-06-28 03:46:12,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:12,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:12,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:12,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:46:12,698 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:12,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:12,699 INFO L85 PathProgramCache]: Analyzing trace with hash -832836752, now seen corresponding path program 8 times [2024-06-28 03:46:12,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:12,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131843961] [2024-06-28 03:46:12,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:12,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:14,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:14,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131843961] [2024-06-28 03:46:14,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131843961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:14,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:14,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132511937] [2024-06-28 03:46:14,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:14,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:14,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:14,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:14,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:14,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:14,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 268 transitions, 3003 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:14,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:14,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:14,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:15,422 INFO L124 PetriNetUnfolderBase]: 742/1289 cut-off events. [2024-06-28 03:46:15,422 INFO L125 PetriNetUnfolderBase]: For 157794/157794 co-relation queries the response was YES. [2024-06-28 03:46:15,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9932 conditions, 1289 events. 742/1289 cut-off events. For 157794/157794 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6665 event pairs, 87 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9804. Up to 1063 conditions per place. [2024-06-28 03:46:15,433 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 68 changer transitions 0/286 dead transitions. [2024-06-28 03:46:15,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 286 transitions, 3621 flow [2024-06-28 03:46:15,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:46:15,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:46:15,434 INFO L175 Difference]: Start difference. First operand has 285 places, 268 transitions, 3003 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:46:15,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 286 transitions, 3621 flow [2024-06-28 03:46:15,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 286 transitions, 3457 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:15,869 INFO L231 Difference]: Finished difference. Result has 288 places, 268 transitions, 2979 flow [2024-06-28 03:46:15,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2839, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2979, PETRI_PLACES=288, PETRI_TRANSITIONS=268} [2024-06-28 03:46:15,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 03:46:15,870 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 268 transitions, 2979 flow [2024-06-28 03:46:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:15,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:15,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:46:15,871 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:15,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash 12371486, now seen corresponding path program 9 times [2024-06-28 03:46:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362629340] [2024-06-28 03:46:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:17,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362629340] [2024-06-28 03:46:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362629340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:17,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:17,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:17,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136755338] [2024-06-28 03:46:17,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:17,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:17,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:17,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:17,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 268 transitions, 2979 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:17,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:17,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:17,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:17,901 INFO L124 PetriNetUnfolderBase]: 746/1297 cut-off events. [2024-06-28 03:46:17,902 INFO L125 PetriNetUnfolderBase]: For 161248/161248 co-relation queries the response was YES. [2024-06-28 03:46:17,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9987 conditions, 1297 events. 746/1297 cut-off events. For 161248/161248 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6714 event pairs, 80 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 9858. Up to 1163 conditions per place. [2024-06-28 03:46:17,915 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 237 selfloop transitions, 47 changer transitions 0/286 dead transitions. [2024-06-28 03:46:17,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 286 transitions, 3630 flow [2024-06-28 03:46:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:46:17,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:46:17,916 INFO L175 Difference]: Start difference. First operand has 288 places, 268 transitions, 2979 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:46:17,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 286 transitions, 3630 flow [2024-06-28 03:46:18,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 286 transitions, 3469 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:46:18,292 INFO L231 Difference]: Finished difference. Result has 288 places, 270 transitions, 2959 flow [2024-06-28 03:46:18,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2959, PETRI_PLACES=288, PETRI_TRANSITIONS=270} [2024-06-28 03:46:18,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 03:46:18,293 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 270 transitions, 2959 flow [2024-06-28 03:46:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:18,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:18,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:18,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:46:18,293 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:18,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash 213935687, now seen corresponding path program 2 times [2024-06-28 03:46:18,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:18,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139599492] [2024-06-28 03:46:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:18,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:19,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139599492] [2024-06-28 03:46:19,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139599492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:19,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:19,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:19,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200223393] [2024-06-28 03:46:19,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:19,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:19,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:19,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:19,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 270 transitions, 2959 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:19,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:19,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:19,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:20,293 INFO L124 PetriNetUnfolderBase]: 750/1305 cut-off events. [2024-06-28 03:46:20,293 INFO L125 PetriNetUnfolderBase]: For 164504/164504 co-relation queries the response was YES. [2024-06-28 03:46:20,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1305 events. 750/1305 cut-off events. For 164504/164504 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6801 event pairs, 86 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 9855. Up to 1216 conditions per place. [2024-06-28 03:46:20,304 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 251 selfloop transitions, 34 changer transitions 0/287 dead transitions. [2024-06-28 03:46:20,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 287 transitions, 3588 flow [2024-06-28 03:46:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:46:20,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:46:20,305 INFO L175 Difference]: Start difference. First operand has 288 places, 270 transitions, 2959 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:46:20,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 287 transitions, 3588 flow [2024-06-28 03:46:20,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 3484 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:20,687 INFO L231 Difference]: Finished difference. Result has 292 places, 272 transitions, 2954 flow [2024-06-28 03:46:20,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2954, PETRI_PLACES=292, PETRI_TRANSITIONS=272} [2024-06-28 03:46:20,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 03:46:20,687 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 272 transitions, 2954 flow [2024-06-28 03:46:20,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:20,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:20,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:20,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:46:20,688 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:20,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:20,688 INFO L85 PathProgramCache]: Analyzing trace with hash 206526377, now seen corresponding path program 3 times [2024-06-28 03:46:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293804020] [2024-06-28 03:46:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:22,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:22,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293804020] [2024-06-28 03:46:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293804020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:22,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:22,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303279624] [2024-06-28 03:46:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:22,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:22,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 272 transitions, 2954 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:22,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:22,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:22,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:22,889 INFO L124 PetriNetUnfolderBase]: 754/1313 cut-off events. [2024-06-28 03:46:22,889 INFO L125 PetriNetUnfolderBase]: For 167664/167664 co-relation queries the response was YES. [2024-06-28 03:46:22,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10011 conditions, 1313 events. 754/1313 cut-off events. For 167664/167664 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6845 event pairs, 80 based on Foata normal form. 2/1313 useless extension candidates. Maximal degree in co-relation 9879. Up to 1204 conditions per place. [2024-06-28 03:46:22,902 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 39 changer transitions 0/289 dead transitions. [2024-06-28 03:46:22,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 289 transitions, 3582 flow [2024-06-28 03:46:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:46:22,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:46:22,903 INFO L175 Difference]: Start difference. First operand has 292 places, 272 transitions, 2954 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:46:22,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 289 transitions, 3582 flow [2024-06-28 03:46:23,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 289 transitions, 3514 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:23,380 INFO L231 Difference]: Finished difference. Result has 295 places, 273 transitions, 2980 flow [2024-06-28 03:46:23,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2980, PETRI_PLACES=295, PETRI_TRANSITIONS=273} [2024-06-28 03:46:23,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-28 03:46:23,380 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 273 transitions, 2980 flow [2024-06-28 03:46:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:23,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:23,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:46:23,381 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 213944987, now seen corresponding path program 4 times [2024-06-28 03:46:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:23,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305835156] [2024-06-28 03:46:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:24,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:24,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305835156] [2024-06-28 03:46:24,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305835156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:24,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:24,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795069276] [2024-06-28 03:46:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:24,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:24,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:24,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:24,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:24,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 273 transitions, 2980 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:24,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:24,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:24,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:25,188 INFO L124 PetriNetUnfolderBase]: 758/1321 cut-off events. [2024-06-28 03:46:25,188 INFO L125 PetriNetUnfolderBase]: For 171272/171272 co-relation queries the response was YES. [2024-06-28 03:46:25,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10106 conditions, 1321 events. 758/1321 cut-off events. For 171272/171272 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6893 event pairs, 86 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 9973. Up to 1234 conditions per place. [2024-06-28 03:46:25,201 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 33 changer transitions 0/289 dead transitions. [2024-06-28 03:46:25,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 289 transitions, 3604 flow [2024-06-28 03:46:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:46:25,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:46:25,202 INFO L175 Difference]: Start difference. First operand has 295 places, 273 transitions, 2980 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:46:25,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 289 transitions, 3604 flow [2024-06-28 03:46:25,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 289 transitions, 3520 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:25,780 INFO L231 Difference]: Finished difference. Result has 297 places, 274 transitions, 2980 flow [2024-06-28 03:46:25,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2980, PETRI_PLACES=297, PETRI_TRANSITIONS=274} [2024-06-28 03:46:25,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 03:46:25,780 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 274 transitions, 2980 flow [2024-06-28 03:46:25,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:25,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:25,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:25,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:46:25,781 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:25,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 12586967, now seen corresponding path program 5 times [2024-06-28 03:46:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:25,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003115596] [2024-06-28 03:46:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:27,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003115596] [2024-06-28 03:46:27,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003115596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:27,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:27,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:27,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293008436] [2024-06-28 03:46:27,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:27,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:27,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:27,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:27,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 274 transitions, 2980 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:27,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:27,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:27,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:27,796 INFO L124 PetriNetUnfolderBase]: 762/1329 cut-off events. [2024-06-28 03:46:27,796 INFO L125 PetriNetUnfolderBase]: For 174961/174961 co-relation queries the response was YES. [2024-06-28 03:46:27,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 1329 events. 762/1329 cut-off events. For 174961/174961 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6965 event pairs, 78 based on Foata normal form. 2/1329 useless extension candidates. Maximal degree in co-relation 10029. Up to 1206 conditions per place. [2024-06-28 03:46:27,808 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2024-06-28 03:46:27,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 291 transitions, 3616 flow [2024-06-28 03:46:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:46:27,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:46:27,809 INFO L175 Difference]: Start difference. First operand has 297 places, 274 transitions, 2980 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:46:27,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 291 transitions, 3616 flow [2024-06-28 03:46:28,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 291 transitions, 3542 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:28,236 INFO L231 Difference]: Finished difference. Result has 299 places, 275 transitions, 3010 flow [2024-06-28 03:46:28,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3010, PETRI_PLACES=299, PETRI_TRANSITIONS=275} [2024-06-28 03:46:28,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 03:46:28,237 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 275 transitions, 3010 flow [2024-06-28 03:46:28,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:28,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:28,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:28,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:46:28,237 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:28,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:28,238 INFO L85 PathProgramCache]: Analyzing trace with hash 12579031, now seen corresponding path program 5 times [2024-06-28 03:46:28,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:28,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002413706] [2024-06-28 03:46:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:29,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:29,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002413706] [2024-06-28 03:46:29,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002413706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:29,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:29,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285449891] [2024-06-28 03:46:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:29,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:29,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:29,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:29,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 275 transitions, 3010 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:29,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:29,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:29,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:30,166 INFO L124 PetriNetUnfolderBase]: 768/1339 cut-off events. [2024-06-28 03:46:30,167 INFO L125 PetriNetUnfolderBase]: For 179192/179192 co-relation queries the response was YES. [2024-06-28 03:46:30,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10288 conditions, 1339 events. 768/1339 cut-off events. For 179192/179192 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7066 event pairs, 77 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 10153. Up to 1169 conditions per place. [2024-06-28 03:46:30,181 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 53 changer transitions 0/295 dead transitions. [2024-06-28 03:46:30,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 295 transitions, 3688 flow [2024-06-28 03:46:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:46:30,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:46:30,182 INFO L175 Difference]: Start difference. First operand has 299 places, 275 transitions, 3010 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:46:30,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 295 transitions, 3688 flow [2024-06-28 03:46:30,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 295 transitions, 3594 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:30,657 INFO L231 Difference]: Finished difference. Result has 302 places, 277 transitions, 3071 flow [2024-06-28 03:46:30,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3071, PETRI_PLACES=302, PETRI_TRANSITIONS=277} [2024-06-28 03:46:30,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 03:46:30,658 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 277 transitions, 3071 flow [2024-06-28 03:46:30,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:30,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:30,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:46:30,659 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:30,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:30,659 INFO L85 PathProgramCache]: Analyzing trace with hash 12377221, now seen corresponding path program 6 times [2024-06-28 03:46:30,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:30,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018255499] [2024-06-28 03:46:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:30,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:32,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018255499] [2024-06-28 03:46:32,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018255499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:32,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:32,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:32,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744736285] [2024-06-28 03:46:32,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:32,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:32,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:32,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:32,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:32,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 277 transitions, 3071 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:32,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:32,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:32,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:32,929 INFO L124 PetriNetUnfolderBase]: 764/1333 cut-off events. [2024-06-28 03:46:32,929 INFO L125 PetriNetUnfolderBase]: For 172997/172997 co-relation queries the response was YES. [2024-06-28 03:46:32,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10114 conditions, 1333 events. 764/1333 cut-off events. For 172997/172997 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7008 event pairs, 80 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 9978. Up to 1086 conditions per place. [2024-06-28 03:46:32,942 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 233 selfloop transitions, 63 changer transitions 0/298 dead transitions. [2024-06-28 03:46:32,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 298 transitions, 4111 flow [2024-06-28 03:46:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:46:32,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:46:32,944 INFO L175 Difference]: Start difference. First operand has 302 places, 277 transitions, 3071 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:46:32,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 298 transitions, 4111 flow [2024-06-28 03:46:33,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 298 transitions, 3980 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:33,452 INFO L231 Difference]: Finished difference. Result has 306 places, 277 transitions, 3071 flow [2024-06-28 03:46:33,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3071, PETRI_PLACES=306, PETRI_TRANSITIONS=277} [2024-06-28 03:46:33,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-28 03:46:33,453 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 277 transitions, 3071 flow [2024-06-28 03:46:33,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:33,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:33,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:33,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:46:33,453 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:33,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash 206310896, now seen corresponding path program 10 times [2024-06-28 03:46:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659379788] [2024-06-28 03:46:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:33,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659379788] [2024-06-28 03:46:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659379788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:34,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:34,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4759198] [2024-06-28 03:46:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:34,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:34,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:34,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:34,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 277 transitions, 3071 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:34,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:34,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:34,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:35,442 INFO L124 PetriNetUnfolderBase]: 784/1377 cut-off events. [2024-06-28 03:46:35,443 INFO L125 PetriNetUnfolderBase]: For 223970/223970 co-relation queries the response was YES. [2024-06-28 03:46:35,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10358 conditions, 1377 events. 784/1377 cut-off events. For 223970/223970 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7312 event pairs, 90 based on Foata normal form. 12/1387 useless extension candidates. Maximal degree in co-relation 10221. Up to 1219 conditions per place. [2024-06-28 03:46:35,456 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 39 changer transitions 6/300 dead transitions. [2024-06-28 03:46:35,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 300 transitions, 3793 flow [2024-06-28 03:46:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:46:35,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:46:35,457 INFO L175 Difference]: Start difference. First operand has 306 places, 277 transitions, 3071 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:46:35,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 300 transitions, 3793 flow [2024-06-28 03:46:35,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 300 transitions, 3649 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:46:35,958 INFO L231 Difference]: Finished difference. Result has 307 places, 277 transitions, 3029 flow [2024-06-28 03:46:35,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3029, PETRI_PLACES=307, PETRI_TRANSITIONS=277} [2024-06-28 03:46:35,958 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 03:46:35,959 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 277 transitions, 3029 flow [2024-06-28 03:46:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:35,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:35,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:35,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:46:35,959 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:35,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 7014841, now seen corresponding path program 7 times [2024-06-28 03:46:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:35,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996100607] [2024-06-28 03:46:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996100607] [2024-06-28 03:46:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996100607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:37,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:37,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:37,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808100881] [2024-06-28 03:46:37,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:37,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:37,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:37,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:37,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:37,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 277 transitions, 3029 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:37,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:37,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:37,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:38,127 INFO L124 PetriNetUnfolderBase]: 770/1355 cut-off events. [2024-06-28 03:46:38,127 INFO L125 PetriNetUnfolderBase]: For 170707/170707 co-relation queries the response was YES. [2024-06-28 03:46:38,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9786 conditions, 1355 events. 770/1355 cut-off events. For 170707/170707 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7203 event pairs, 80 based on Foata normal form. 4/1357 useless extension candidates. Maximal degree in co-relation 9648. Up to 1114 conditions per place. [2024-06-28 03:46:38,140 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 229 selfloop transitions, 65 changer transitions 0/296 dead transitions. [2024-06-28 03:46:38,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 296 transitions, 3869 flow [2024-06-28 03:46:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:46:38,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 03:46:38,141 INFO L175 Difference]: Start difference. First operand has 307 places, 277 transitions, 3029 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:46:38,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 296 transitions, 3869 flow [2024-06-28 03:46:38,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 296 transitions, 3685 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-28 03:46:38,604 INFO L231 Difference]: Finished difference. Result has 308 places, 277 transitions, 2988 flow [2024-06-28 03:46:38,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2988, PETRI_PLACES=308, PETRI_TRANSITIONS=277} [2024-06-28 03:46:38,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 03:46:38,604 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 277 transitions, 2988 flow [2024-06-28 03:46:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:38,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:38,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:38,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:46:38,605 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:38,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 206316631, now seen corresponding path program 8 times [2024-06-28 03:46:38,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:38,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500344759] [2024-06-28 03:46:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500344759] [2024-06-28 03:46:39,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500344759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:39,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:39,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976381322] [2024-06-28 03:46:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:39,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:39,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:39,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 277 transitions, 2988 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:39,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:39,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:39,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:40,511 INFO L124 PetriNetUnfolderBase]: 776/1365 cut-off events. [2024-06-28 03:46:40,511 INFO L125 PetriNetUnfolderBase]: For 166839/166839 co-relation queries the response was YES. [2024-06-28 03:46:40,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9863 conditions, 1365 events. 776/1365 cut-off events. For 166839/166839 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7260 event pairs, 84 based on Foata normal form. 2/1365 useless extension candidates. Maximal degree in co-relation 9724. Up to 1238 conditions per place. [2024-06-28 03:46:40,523 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 43 changer transitions 0/297 dead transitions. [2024-06-28 03:46:40,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 297 transitions, 3674 flow [2024-06-28 03:46:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:46:40,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:46:40,524 INFO L175 Difference]: Start difference. First operand has 308 places, 277 transitions, 2988 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:46:40,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 297 transitions, 3674 flow [2024-06-28 03:46:41,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 297 transitions, 3486 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:46:41,021 INFO L231 Difference]: Finished difference. Result has 307 places, 279 transitions, 2939 flow [2024-06-28 03:46:41,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2939, PETRI_PLACES=307, PETRI_TRANSITIONS=279} [2024-06-28 03:46:41,021 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 03:46:41,022 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 279 transitions, 2939 flow [2024-06-28 03:46:41,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:41,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:41,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:41,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:46:41,022 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:41,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash 206518441, now seen corresponding path program 9 times [2024-06-28 03:46:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593852025] [2024-06-28 03:46:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:42,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593852025] [2024-06-28 03:46:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593852025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:42,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:42,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065849393] [2024-06-28 03:46:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:42,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:42,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:42,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:42,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 279 transitions, 2939 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:42,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:42,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:42,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:42,966 INFO L124 PetriNetUnfolderBase]: 772/1359 cut-off events. [2024-06-28 03:46:42,966 INFO L125 PetriNetUnfolderBase]: For 156378/156378 co-relation queries the response was YES. [2024-06-28 03:46:42,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9525 conditions, 1359 events. 772/1359 cut-off events. For 156378/156378 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7234 event pairs, 83 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 9386. Up to 1232 conditions per place. [2024-06-28 03:46:42,980 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 42 changer transitions 0/297 dead transitions. [2024-06-28 03:46:42,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 297 transitions, 3581 flow [2024-06-28 03:46:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:42,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:46:42,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:46:42,981 INFO L175 Difference]: Start difference. First operand has 307 places, 279 transitions, 2939 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:46:42,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 297 transitions, 3581 flow [2024-06-28 03:46:43,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 297 transitions, 3434 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:43,513 INFO L231 Difference]: Finished difference. Result has 309 places, 279 transitions, 2881 flow [2024-06-28 03:46:43,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2881, PETRI_PLACES=309, PETRI_TRANSITIONS=279} [2024-06-28 03:46:43,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 03:46:43,514 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 279 transitions, 2881 flow [2024-06-28 03:46:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:43,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:43,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:43,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:46:43,514 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:43,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:43,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1034624302, now seen corresponding path program 11 times [2024-06-28 03:46:43,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:43,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397932357] [2024-06-28 03:46:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:43,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397932357] [2024-06-28 03:46:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397932357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:44,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:44,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562480930] [2024-06-28 03:46:44,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:44,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:44,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:44,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 279 transitions, 2881 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:44,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:44,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:44,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:45,453 INFO L124 PetriNetUnfolderBase]: 779/1372 cut-off events. [2024-06-28 03:46:45,453 INFO L125 PetriNetUnfolderBase]: For 159393/159393 co-relation queries the response was YES. [2024-06-28 03:46:45,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1372 events. 779/1372 cut-off events. For 159393/159393 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7319 event pairs, 99 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 9432. Up to 1227 conditions per place. [2024-06-28 03:46:45,467 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 53 changer transitions 1/300 dead transitions. [2024-06-28 03:46:45,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 300 transitions, 3572 flow [2024-06-28 03:46:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:46:45,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:46:45,468 INFO L175 Difference]: Start difference. First operand has 309 places, 279 transitions, 2881 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:46:45,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 300 transitions, 3572 flow [2024-06-28 03:46:45,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 300 transitions, 3448 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 03:46:45,955 INFO L231 Difference]: Finished difference. Result has 309 places, 282 transitions, 2914 flow [2024-06-28 03:46:45,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2914, PETRI_PLACES=309, PETRI_TRANSITIONS=282} [2024-06-28 03:46:45,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 03:46:45,956 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 282 transitions, 2914 flow [2024-06-28 03:46:45,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:45,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:45,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:46:45,956 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:45,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1398842634, now seen corresponding path program 12 times [2024-06-28 03:46:45,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:45,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377144777] [2024-06-28 03:46:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:45,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:47,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:47,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377144777] [2024-06-28 03:46:47,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377144777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:47,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:47,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071671718] [2024-06-28 03:46:47,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:47,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:47,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:47,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:47,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 282 transitions, 2914 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:47,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:47,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:47,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:48,044 INFO L124 PetriNetUnfolderBase]: 783/1380 cut-off events. [2024-06-28 03:46:48,044 INFO L125 PetriNetUnfolderBase]: For 162818/162818 co-relation queries the response was YES. [2024-06-28 03:46:48,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9659 conditions, 1380 events. 783/1380 cut-off events. For 162818/162818 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7366 event pairs, 88 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 9518. Up to 1246 conditions per place. [2024-06-28 03:46:48,058 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 249 selfloop transitions, 49 changer transitions 0/300 dead transitions. [2024-06-28 03:46:48,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 300 transitions, 3588 flow [2024-06-28 03:46:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:46:48,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 03:46:48,059 INFO L175 Difference]: Start difference. First operand has 309 places, 282 transitions, 2914 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:46:48,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 300 transitions, 3588 flow [2024-06-28 03:46:48,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 300 transitions, 3467 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:48,503 INFO L231 Difference]: Finished difference. Result has 313 places, 283 transitions, 2929 flow [2024-06-28 03:46:48,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2929, PETRI_PLACES=313, PETRI_TRANSITIONS=283} [2024-06-28 03:46:48,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 03:46:48,503 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 283 transitions, 2929 flow [2024-06-28 03:46:48,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:48,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:48,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:48,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:46:48,504 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:48,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1034620582, now seen corresponding path program 13 times [2024-06-28 03:46:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:48,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701708920] [2024-06-28 03:46:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:48,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:49,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701708920] [2024-06-28 03:46:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701708920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:49,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:49,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890997428] [2024-06-28 03:46:49,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:49,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:49,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:49,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:49,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 283 transitions, 2929 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:49,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:49,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:49,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:50,445 INFO L124 PetriNetUnfolderBase]: 787/1388 cut-off events. [2024-06-28 03:46:50,445 INFO L125 PetriNetUnfolderBase]: For 166065/166065 co-relation queries the response was YES. [2024-06-28 03:46:50,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 1388 events. 787/1388 cut-off events. For 166065/166065 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7444 event pairs, 89 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 9582. Up to 1179 conditions per place. [2024-06-28 03:46:50,458 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 243 selfloop transitions, 57 changer transitions 4/306 dead transitions. [2024-06-28 03:46:50,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 306 transitions, 3653 flow [2024-06-28 03:46:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:46:50,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 03:46:50,459 INFO L175 Difference]: Start difference. First operand has 313 places, 283 transitions, 2929 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:46:50,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 306 transitions, 3653 flow [2024-06-28 03:46:50,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 306 transitions, 3511 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 03:46:51,000 INFO L231 Difference]: Finished difference. Result has 314 places, 284 transitions, 2941 flow [2024-06-28 03:46:51,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2941, PETRI_PLACES=314, PETRI_TRANSITIONS=284} [2024-06-28 03:46:51,001 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 03:46:51,001 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 284 transitions, 2941 flow [2024-06-28 03:46:51,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:51,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:51,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:51,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:46:51,002 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash 795404608, now seen corresponding path program 14 times [2024-06-28 03:46:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032117582] [2024-06-28 03:46:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032117582] [2024-06-28 03:46:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032117582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:52,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:52,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267430643] [2024-06-28 03:46:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:52,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:52,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 284 transitions, 2941 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:52,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:52,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:52,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:53,034 INFO L124 PetriNetUnfolderBase]: 807/1432 cut-off events. [2024-06-28 03:46:53,034 INFO L125 PetriNetUnfolderBase]: For 223429/223429 co-relation queries the response was YES. [2024-06-28 03:46:53,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9955 conditions, 1432 events. 807/1432 cut-off events. For 223429/223429 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7739 event pairs, 113 based on Foata normal form. 12/1442 useless extension candidates. Maximal degree in co-relation 9812. Up to 1315 conditions per place. [2024-06-28 03:46:53,049 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 273 selfloop transitions, 25 changer transitions 6/306 dead transitions. [2024-06-28 03:46:53,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 306 transitions, 3689 flow [2024-06-28 03:46:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:46:53,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:46:53,050 INFO L175 Difference]: Start difference. First operand has 314 places, 284 transitions, 2941 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:46:53,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 306 transitions, 3689 flow [2024-06-28 03:46:53,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 306 transitions, 3545 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:53,589 INFO L231 Difference]: Finished difference. Result has 317 places, 285 transitions, 2896 flow [2024-06-28 03:46:53,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2896, PETRI_PLACES=317, PETRI_TRANSITIONS=285} [2024-06-28 03:46:53,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-28 03:46:53,590 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 285 transitions, 2896 flow [2024-06-28 03:46:53,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:53,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:53,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:53,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:46:53,590 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:53,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1133507783, now seen corresponding path program 6 times [2024-06-28 03:46:53,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:53,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128856931] [2024-06-28 03:46:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:54,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:54,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128856931] [2024-06-28 03:46:54,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128856931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:54,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:54,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:46:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519744791] [2024-06-28 03:46:54,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:46:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:46:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:46:54,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:54,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 285 transitions, 2896 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:54,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:54,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:54,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:55,485 INFO L124 PetriNetUnfolderBase]: 805/1430 cut-off events. [2024-06-28 03:46:55,485 INFO L125 PetriNetUnfolderBase]: For 172521/172521 co-relation queries the response was YES. [2024-06-28 03:46:55,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9857 conditions, 1430 events. 805/1430 cut-off events. For 172521/172521 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7727 event pairs, 117 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 9712. Up to 1380 conditions per place. [2024-06-28 03:46:55,500 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 278 selfloop transitions, 20 changer transitions 0/300 dead transitions. [2024-06-28 03:46:55,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 300 transitions, 3555 flow [2024-06-28 03:46:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:46:55,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:46:55,501 INFO L175 Difference]: Start difference. First operand has 317 places, 285 transitions, 2896 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:46:55,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 300 transitions, 3555 flow [2024-06-28 03:46:56,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 300 transitions, 3477 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:56,042 INFO L231 Difference]: Finished difference. Result has 320 places, 287 transitions, 2898 flow [2024-06-28 03:46:56,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2898, PETRI_PLACES=320, PETRI_TRANSITIONS=287} [2024-06-28 03:46:56,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-28 03:46:56,042 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 287 transitions, 2898 flow [2024-06-28 03:46:56,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:56,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:56,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:56,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:46:56,043 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:56,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash 550086985, now seen corresponding path program 7 times [2024-06-28 03:46:56,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:56,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327881002] [2024-06-28 03:46:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:56,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:57,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:57,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327881002] [2024-06-28 03:46:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327881002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:57,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:57,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:46:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535914958] [2024-06-28 03:46:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:46:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:46:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:46:57,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:57,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 287 transitions, 2898 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:57,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:57,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:57,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:57,703 INFO L124 PetriNetUnfolderBase]: 809/1438 cut-off events. [2024-06-28 03:46:57,704 INFO L125 PetriNetUnfolderBase]: For 175094/175094 co-relation queries the response was YES. [2024-06-28 03:46:57,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9885 conditions, 1438 events. 809/1438 cut-off events. For 175094/175094 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7809 event pairs, 121 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 9738. Up to 1400 conditions per place. [2024-06-28 03:46:57,719 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 283 selfloop transitions, 16 changer transitions 0/301 dead transitions. [2024-06-28 03:46:57,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 301 transitions, 3554 flow [2024-06-28 03:46:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:46:57,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:46:57,720 INFO L175 Difference]: Start difference. First operand has 320 places, 287 transitions, 2898 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:46:57,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 301 transitions, 3554 flow [2024-06-28 03:46:58,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 301 transitions, 3505 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:58,282 INFO L231 Difference]: Finished difference. Result has 324 places, 289 transitions, 2920 flow [2024-06-28 03:46:58,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2920, PETRI_PLACES=324, PETRI_TRANSITIONS=289} [2024-06-28 03:46:58,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 03:46:58,282 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 289 transitions, 2920 flow [2024-06-28 03:46:58,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:58,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:58,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:58,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:46:58,282 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:58,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1340582234, now seen corresponding path program 15 times [2024-06-28 03:46:58,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:58,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155626008] [2024-06-28 03:46:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:58,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:59,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:59,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155626008] [2024-06-28 03:46:59,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155626008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:59,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:59,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:46:59,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447839140] [2024-06-28 03:46:59,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:59,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:46:59,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:46:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:46:59,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:46:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 289 transitions, 2920 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:59,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:59,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:46:59,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:59,926 INFO L124 PetriNetUnfolderBase]: 849/1518 cut-off events. [2024-06-28 03:46:59,926 INFO L125 PetriNetUnfolderBase]: For 248305/248305 co-relation queries the response was YES. [2024-06-28 03:46:59,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11645 conditions, 1518 events. 849/1518 cut-off events. For 248305/248305 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8296 event pairs, 123 based on Foata normal form. 2/1518 useless extension candidates. Maximal degree in co-relation 11496. Up to 1243 conditions per place. [2024-06-28 03:46:59,939 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 262 selfloop transitions, 46 changer transitions 0/310 dead transitions. [2024-06-28 03:46:59,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 310 transitions, 3910 flow [2024-06-28 03:46:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:46:59,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 03:46:59,940 INFO L175 Difference]: Start difference. First operand has 324 places, 289 transitions, 2920 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:46:59,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 310 transitions, 3910 flow [2024-06-28 03:47:00,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 310 transitions, 3866 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:00,679 INFO L231 Difference]: Finished difference. Result has 327 places, 290 transitions, 3010 flow [2024-06-28 03:47:00,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3010, PETRI_PLACES=327, PETRI_TRANSITIONS=290} [2024-06-28 03:47:00,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 03:47:00,680 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 290 transitions, 3010 flow [2024-06-28 03:47:00,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:00,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:00,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:00,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:47:00,680 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:00,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash 550355755, now seen corresponding path program 8 times [2024-06-28 03:47:00,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:00,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580361704] [2024-06-28 03:47:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:01,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580361704] [2024-06-28 03:47:01,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580361704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:01,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:01,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361843499] [2024-06-28 03:47:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:01,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:01,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:01,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:01,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:01,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:01,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 290 transitions, 3010 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:01,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:01,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:01,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:02,498 INFO L124 PetriNetUnfolderBase]: 853/1526 cut-off events. [2024-06-28 03:47:02,498 INFO L125 PetriNetUnfolderBase]: For 251176/251176 co-relation queries the response was YES. [2024-06-28 03:47:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11796 conditions, 1526 events. 853/1526 cut-off events. For 251176/251176 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8384 event pairs, 147 based on Foata normal form. 2/1526 useless extension candidates. Maximal degree in co-relation 11646. Up to 1474 conditions per place. [2024-06-28 03:47:02,515 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 285 selfloop transitions, 18 changer transitions 0/305 dead transitions. [2024-06-28 03:47:02,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 305 transitions, 3670 flow [2024-06-28 03:47:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:47:02,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:47:02,516 INFO L175 Difference]: Start difference. First operand has 327 places, 290 transitions, 3010 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:47:02,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 305 transitions, 3670 flow [2024-06-28 03:47:03,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 305 transitions, 3457 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:47:03,397 INFO L231 Difference]: Finished difference. Result has 328 places, 291 transitions, 2859 flow [2024-06-28 03:47:03,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2859, PETRI_PLACES=328, PETRI_TRANSITIONS=291} [2024-06-28 03:47:03,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-28 03:47:03,397 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 291 transitions, 2859 flow [2024-06-28 03:47:03,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:03,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:03,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:03,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:47:03,398 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:03,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:03,398 INFO L85 PathProgramCache]: Analyzing trace with hash 792535595, now seen corresponding path program 9 times [2024-06-28 03:47:03,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:03,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975757875] [2024-06-28 03:47:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:03,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975757875] [2024-06-28 03:47:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975757875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:04,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:04,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:04,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398289238] [2024-06-28 03:47:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:04,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:04,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:04,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:04,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:04,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:04,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 291 transitions, 2859 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:04,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:04,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:04,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:05,133 INFO L124 PetriNetUnfolderBase]: 857/1534 cut-off events. [2024-06-28 03:47:05,134 INFO L125 PetriNetUnfolderBase]: For 256743/256743 co-relation queries the response was YES. [2024-06-28 03:47:05,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 1534 events. 857/1534 cut-off events. For 256743/256743 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8433 event pairs, 145 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 11417. Up to 1484 conditions per place. [2024-06-28 03:47:05,148 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 284 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-06-28 03:47:05,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 305 transitions, 3519 flow [2024-06-28 03:47:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:47:05,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:47:05,149 INFO L175 Difference]: Start difference. First operand has 328 places, 291 transitions, 2859 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:47:05,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 305 transitions, 3519 flow [2024-06-28 03:47:05,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 305 transitions, 3467 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:05,979 INFO L231 Difference]: Finished difference. Result has 329 places, 292 transitions, 2873 flow [2024-06-28 03:47:05,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2873, PETRI_PLACES=329, PETRI_TRANSITIONS=292} [2024-06-28 03:47:05,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-28 03:47:05,979 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 292 transitions, 2873 flow [2024-06-28 03:47:05,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:05,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:05,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:05,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:47:05,980 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:05,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1123258253, now seen corresponding path program 10 times [2024-06-28 03:47:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:05,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618304333] [2024-06-28 03:47:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:05,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:06,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618304333] [2024-06-28 03:47:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618304333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400133488] [2024-06-28 03:47:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:06,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:06,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:07,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:07,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 292 transitions, 2873 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:07,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:07,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:07,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:07,582 INFO L124 PetriNetUnfolderBase]: 861/1542 cut-off events. [2024-06-28 03:47:07,582 INFO L125 PetriNetUnfolderBase]: For 259747/259747 co-relation queries the response was YES. [2024-06-28 03:47:07,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11644 conditions, 1542 events. 861/1542 cut-off events. For 259747/259747 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8504 event pairs, 151 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 11495. Up to 1499 conditions per place. [2024-06-28 03:47:07,599 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 288 selfloop transitions, 15 changer transitions 0/305 dead transitions. [2024-06-28 03:47:07,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 305 transitions, 3529 flow [2024-06-28 03:47:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:47:07,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:47:07,599 INFO L175 Difference]: Start difference. First operand has 329 places, 292 transitions, 2873 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:47:07,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 305 transitions, 3529 flow [2024-06-28 03:47:08,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 305 transitions, 3473 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:08,454 INFO L231 Difference]: Finished difference. Result has 331 places, 293 transitions, 2877 flow [2024-06-28 03:47:08,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2877, PETRI_PLACES=331, PETRI_TRANSITIONS=293} [2024-06-28 03:47:08,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 03:47:08,455 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 293 transitions, 2877 flow [2024-06-28 03:47:08,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:08,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:08,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:08,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:47:08,455 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:08,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1140917093, now seen corresponding path program 11 times [2024-06-28 03:47:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308147956] [2024-06-28 03:47:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:08,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:09,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:09,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308147956] [2024-06-28 03:47:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308147956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:09,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:09,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749589837] [2024-06-28 03:47:09,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:09,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:09,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:09,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 293 transitions, 2877 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:09,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:09,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:09,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:10,383 INFO L124 PetriNetUnfolderBase]: 865/1550 cut-off events. [2024-06-28 03:47:10,383 INFO L125 PetriNetUnfolderBase]: For 264703/264703 co-relation queries the response was YES. [2024-06-28 03:47:10,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 1550 events. 865/1550 cut-off events. For 264703/264703 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8590 event pairs, 147 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 11563. Up to 1491 conditions per place. [2024-06-28 03:47:10,399 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 283 selfloop transitions, 23 changer transitions 0/308 dead transitions. [2024-06-28 03:47:10,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 308 transitions, 3553 flow [2024-06-28 03:47:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:47:10,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:47:10,400 INFO L175 Difference]: Start difference. First operand has 331 places, 293 transitions, 2877 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:47:10,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 308 transitions, 3553 flow [2024-06-28 03:47:11,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 308 transitions, 3503 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:11,350 INFO L231 Difference]: Finished difference. Result has 333 places, 294 transitions, 2905 flow [2024-06-28 03:47:11,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2905, PETRI_PLACES=333, PETRI_TRANSITIONS=294} [2024-06-28 03:47:11,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-28 03:47:11,350 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 294 transitions, 2905 flow [2024-06-28 03:47:11,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:11,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:11,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:11,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:47:11,351 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:11,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1141126839, now seen corresponding path program 10 times [2024-06-28 03:47:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132419130] [2024-06-28 03:47:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132419130] [2024-06-28 03:47:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132419130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:12,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:12,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361783220] [2024-06-28 03:47:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:12,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:12,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:12,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 294 transitions, 2905 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:12,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:12,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:12,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:13,594 INFO L124 PetriNetUnfolderBase]: 871/1560 cut-off events. [2024-06-28 03:47:13,594 INFO L125 PetriNetUnfolderBase]: For 271311/271311 co-relation queries the response was YES. [2024-06-28 03:47:13,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11812 conditions, 1560 events. 871/1560 cut-off events. For 271311/271311 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8686 event pairs, 139 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 11661. Up to 1474 conditions per place. [2024-06-28 03:47:13,611 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 30 changer transitions 0/312 dead transitions. [2024-06-28 03:47:13,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 312 transitions, 3611 flow [2024-06-28 03:47:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:47:13,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:47:13,612 INFO L175 Difference]: Start difference. First operand has 333 places, 294 transitions, 2905 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:47:13,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 312 transitions, 3611 flow [2024-06-28 03:47:14,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 312 transitions, 3543 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:14,513 INFO L231 Difference]: Finished difference. Result has 336 places, 296 transitions, 2946 flow [2024-06-28 03:47:14,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2946, PETRI_PLACES=336, PETRI_TRANSITIONS=296} [2024-06-28 03:47:14,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 03:47:14,514 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 296 transitions, 2946 flow [2024-06-28 03:47:14,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:14,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:14,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:14,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:47:14,514 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:14,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:14,515 INFO L85 PathProgramCache]: Analyzing trace with hash 542937145, now seen corresponding path program 12 times [2024-06-28 03:47:14,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:14,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354772059] [2024-06-28 03:47:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:14,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354772059] [2024-06-28 03:47:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354772059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:16,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2248754] [2024-06-28 03:47:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:16,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:16,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 296 transitions, 2946 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:16,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:16,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:16,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:16,860 INFO L124 PetriNetUnfolderBase]: 875/1568 cut-off events. [2024-06-28 03:47:16,860 INFO L125 PetriNetUnfolderBase]: For 274291/274291 co-relation queries the response was YES. [2024-06-28 03:47:16,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11912 conditions, 1568 events. 875/1568 cut-off events. For 274291/274291 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8734 event pairs, 151 based on Foata normal form. 2/1568 useless extension candidates. Maximal degree in co-relation 11760. Up to 1521 conditions per place. [2024-06-28 03:47:16,878 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 289 selfloop transitions, 19 changer transitions 0/310 dead transitions. [2024-06-28 03:47:16,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 310 transitions, 3624 flow [2024-06-28 03:47:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:47:16,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:47:16,879 INFO L175 Difference]: Start difference. First operand has 336 places, 296 transitions, 2946 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:47:16,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 310 transitions, 3624 flow [2024-06-28 03:47:17,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 310 transitions, 3542 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:17,691 INFO L231 Difference]: Finished difference. Result has 338 places, 297 transitions, 2936 flow [2024-06-28 03:47:17,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2936, PETRI_PLACES=338, PETRI_TRANSITIONS=297} [2024-06-28 03:47:17,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-28 03:47:17,691 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 297 transitions, 2936 flow [2024-06-28 03:47:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:17,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:17,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:17,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:47:17,692 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:17,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:17,693 INFO L85 PathProgramCache]: Analyzing trace with hash 585455564, now seen corresponding path program 16 times [2024-06-28 03:47:17,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:17,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568825217] [2024-06-28 03:47:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:17,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568825217] [2024-06-28 03:47:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568825217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:18,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:18,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966623178] [2024-06-28 03:47:18,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:18,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:18,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:18,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:18,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:18,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 297 transitions, 2936 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:18,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:18,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:18,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:19,557 INFO L124 PetriNetUnfolderBase]: 879/1576 cut-off events. [2024-06-28 03:47:19,558 INFO L125 PetriNetUnfolderBase]: For 281143/281143 co-relation queries the response was YES. [2024-06-28 03:47:19,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11973 conditions, 1576 events. 879/1576 cut-off events. For 281143/281143 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8801 event pairs, 139 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 11820. Up to 1442 conditions per place. [2024-06-28 03:47:19,576 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 50 changer transitions 0/314 dead transitions. [2024-06-28 03:47:19,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 314 transitions, 3635 flow [2024-06-28 03:47:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:47:19,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:47:19,577 INFO L175 Difference]: Start difference. First operand has 338 places, 297 transitions, 2936 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:47:19,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 314 transitions, 3635 flow [2024-06-28 03:47:20,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 314 transitions, 3573 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:20,502 INFO L231 Difference]: Finished difference. Result has 342 places, 298 transitions, 3013 flow [2024-06-28 03:47:20,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3013, PETRI_PLACES=342, PETRI_TRANSITIONS=298} [2024-06-28 03:47:20,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 03:47:20,502 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 298 transitions, 3013 flow [2024-06-28 03:47:20,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:20,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:20,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:20,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:47:20,503 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:20,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 542929209, now seen corresponding path program 11 times [2024-06-28 03:47:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:20,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732656772] [2024-06-28 03:47:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:21,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:21,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732656772] [2024-06-28 03:47:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732656772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:21,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:21,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143948640] [2024-06-28 03:47:21,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:21,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:21,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:22,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:22,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 298 transitions, 3013 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:22,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:22,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:22,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:22,825 INFO L124 PetriNetUnfolderBase]: 885/1586 cut-off events. [2024-06-28 03:47:22,825 INFO L125 PetriNetUnfolderBase]: For 284147/284147 co-relation queries the response was YES. [2024-06-28 03:47:22,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12122 conditions, 1586 events. 885/1586 cut-off events. For 284147/284147 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8865 event pairs, 144 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 11968. Up to 1484 conditions per place. [2024-06-28 03:47:22,842 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 31 changer transitions 0/316 dead transitions. [2024-06-28 03:47:22,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 316 transitions, 3957 flow [2024-06-28 03:47:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:47:22,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:47:22,843 INFO L175 Difference]: Start difference. First operand has 342 places, 298 transitions, 3013 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:47:22,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 316 transitions, 3957 flow [2024-06-28 03:47:23,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 316 transitions, 3808 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:23,805 INFO L231 Difference]: Finished difference. Result has 345 places, 300 transitions, 2971 flow [2024-06-28 03:47:23,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2971, PETRI_PLACES=345, PETRI_TRANSITIONS=300} [2024-06-28 03:47:23,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-28 03:47:23,806 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 300 transitions, 2971 flow [2024-06-28 03:47:23,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:23,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:23,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:23,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:47:23,806 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:23,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1140925029, now seen corresponding path program 12 times [2024-06-28 03:47:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:23,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181798452] [2024-06-28 03:47:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:23,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:25,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:25,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181798452] [2024-06-28 03:47:25,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181798452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:25,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:25,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:25,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756680767] [2024-06-28 03:47:25,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:25,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:25,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:25,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:25,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 300 transitions, 2971 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:25,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:25,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:25,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:26,022 INFO L124 PetriNetUnfolderBase]: 881/1580 cut-off events. [2024-06-28 03:47:26,022 INFO L125 PetriNetUnfolderBase]: For 276421/276421 co-relation queries the response was YES. [2024-06-28 03:47:26,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11783 conditions, 1580 events. 881/1580 cut-off events. For 276421/276421 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8868 event pairs, 140 based on Foata normal form. 2/1580 useless extension candidates. Maximal degree in co-relation 11628. Up to 1469 conditions per place. [2024-06-28 03:47:26,040 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 34 changer transitions 0/316 dead transitions. [2024-06-28 03:47:26,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 316 transitions, 3645 flow [2024-06-28 03:47:26,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:47:26,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:47:26,041 INFO L175 Difference]: Start difference. First operand has 345 places, 300 transitions, 2971 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:47:26,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 316 transitions, 3645 flow [2024-06-28 03:47:26,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 316 transitions, 3535 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:26,995 INFO L231 Difference]: Finished difference. Result has 347 places, 300 transitions, 2934 flow [2024-06-28 03:47:26,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2934, PETRI_PLACES=347, PETRI_TRANSITIONS=300} [2024-06-28 03:47:26,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-28 03:47:26,996 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 300 transitions, 2934 flow [2024-06-28 03:47:26,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:26,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:26,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:47:26,996 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:26,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 542721664, now seen corresponding path program 17 times [2024-06-28 03:47:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:26,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829569653] [2024-06-28 03:47:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:26,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829569653] [2024-06-28 03:47:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829569653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:28,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:28,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881718618] [2024-06-28 03:47:28,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:28,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:28,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:28,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:28,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 300 transitions, 2934 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:28,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:28,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:28,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:28,798 INFO L124 PetriNetUnfolderBase]: 891/1606 cut-off events. [2024-06-28 03:47:28,798 INFO L125 PetriNetUnfolderBase]: For 334218/334218 co-relation queries the response was YES. [2024-06-28 03:47:28,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11481 conditions, 1606 events. 891/1606 cut-off events. For 334218/334218 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9058 event pairs, 148 based on Foata normal form. 14/1618 useless extension candidates. Maximal degree in co-relation 11325. Up to 1491 conditions per place. [2024-06-28 03:47:28,816 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 19 changer transitions 9/319 dead transitions. [2024-06-28 03:47:28,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 319 transitions, 3719 flow [2024-06-28 03:47:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 03:47:28,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 03:47:28,817 INFO L175 Difference]: Start difference. First operand has 347 places, 300 transitions, 2934 flow. Second operand 10 states and 117 transitions. [2024-06-28 03:47:28,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 319 transitions, 3719 flow [2024-06-28 03:47:29,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 319 transitions, 3615 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:47:29,752 INFO L231 Difference]: Finished difference. Result has 346 places, 298 transitions, 2868 flow [2024-06-28 03:47:29,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2868, PETRI_PLACES=346, PETRI_TRANSITIONS=298} [2024-06-28 03:47:29,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 03:47:29,753 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 298 transitions, 2868 flow [2024-06-28 03:47:29,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:29,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:29,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:29,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:47:29,753 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:29,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:29,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1340428629, now seen corresponding path program 13 times [2024-06-28 03:47:29,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:29,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995479840] [2024-06-28 03:47:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:29,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995479840] [2024-06-28 03:47:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995479840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:31,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:31,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359984963] [2024-06-28 03:47:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:31,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:31,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 298 transitions, 2868 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:31,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:31,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:31,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:31,922 INFO L124 PetriNetUnfolderBase]: 851/1532 cut-off events. [2024-06-28 03:47:31,922 INFO L125 PetriNetUnfolderBase]: For 241641/241641 co-relation queries the response was YES. [2024-06-28 03:47:31,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10780 conditions, 1532 events. 851/1532 cut-off events. For 241641/241641 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8580 event pairs, 119 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 10623. Up to 1371 conditions per place. [2024-06-28 03:47:31,938 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 52 changer transitions 0/313 dead transitions. [2024-06-28 03:47:31,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 313 transitions, 3532 flow [2024-06-28 03:47:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:47:31,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:47:31,940 INFO L175 Difference]: Start difference. First operand has 346 places, 298 transitions, 2868 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:47:31,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 313 transitions, 3532 flow [2024-06-28 03:47:32,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 313 transitions, 3440 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:32,711 INFO L231 Difference]: Finished difference. Result has 349 places, 298 transitions, 2885 flow [2024-06-28 03:47:32,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2885, PETRI_PLACES=349, PETRI_TRANSITIONS=298} [2024-06-28 03:47:32,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-28 03:47:32,712 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 298 transitions, 2885 flow [2024-06-28 03:47:32,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:32,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:32,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:32,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:47:32,712 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:32,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1335066249, now seen corresponding path program 14 times [2024-06-28 03:47:32,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:32,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054345382] [2024-06-28 03:47:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:32,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:34,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:34,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054345382] [2024-06-28 03:47:34,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054345382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:34,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:34,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:34,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858326085] [2024-06-28 03:47:34,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:34,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:34,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:34,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:34,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:34,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:34,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 298 transitions, 2885 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:34,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:34,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:34,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:34,834 INFO L124 PetriNetUnfolderBase]: 857/1542 cut-off events. [2024-06-28 03:47:34,834 INFO L125 PetriNetUnfolderBase]: For 245361/245361 co-relation queries the response was YES. [2024-06-28 03:47:34,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 1542 events. 857/1542 cut-off events. For 245361/245361 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8666 event pairs, 123 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 10727. Up to 1381 conditions per place. [2024-06-28 03:47:34,852 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 47 changer transitions 0/316 dead transitions. [2024-06-28 03:47:34,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 316 transitions, 3597 flow [2024-06-28 03:47:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:47:34,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:47:34,853 INFO L175 Difference]: Start difference. First operand has 349 places, 298 transitions, 2885 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:47:34,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 316 transitions, 3597 flow [2024-06-28 03:47:35,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 316 transitions, 3505 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:35,715 INFO L231 Difference]: Finished difference. Result has 351 places, 300 transitions, 2934 flow [2024-06-28 03:47:35,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2934, PETRI_PLACES=351, PETRI_TRANSITIONS=300} [2024-06-28 03:47:35,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-28 03:47:35,716 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 300 transitions, 2934 flow [2024-06-28 03:47:35,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:35,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:35,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:35,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:47:35,716 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:35,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1335071829, now seen corresponding path program 15 times [2024-06-28 03:47:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697855871] [2024-06-28 03:47:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:37,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697855871] [2024-06-28 03:47:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697855871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:37,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:37,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669828855] [2024-06-28 03:47:37,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:37,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:37,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:37,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 300 transitions, 2934 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:37,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:37,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:37,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:37,780 INFO L124 PetriNetUnfolderBase]: 853/1536 cut-off events. [2024-06-28 03:47:37,780 INFO L125 PetriNetUnfolderBase]: For 234870/234870 co-relation queries the response was YES. [2024-06-28 03:47:37,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10650 conditions, 1536 events. 853/1536 cut-off events. For 234870/234870 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8636 event pairs, 121 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 10491. Up to 1355 conditions per place. [2024-06-28 03:47:37,797 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 53 changer transitions 0/319 dead transitions. [2024-06-28 03:47:37,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 319 transitions, 3864 flow [2024-06-28 03:47:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:47:37,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:47:37,798 INFO L175 Difference]: Start difference. First operand has 351 places, 300 transitions, 2934 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:47:37,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 319 transitions, 3864 flow [2024-06-28 03:47:38,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 319 transitions, 3721 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:38,589 INFO L231 Difference]: Finished difference. Result has 354 places, 300 transitions, 2902 flow [2024-06-28 03:47:38,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2902, PETRI_PLACES=354, PETRI_TRANSITIONS=300} [2024-06-28 03:47:38,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-28 03:47:38,589 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 300 transitions, 2902 flow [2024-06-28 03:47:38,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:38,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:38,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:38,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:47:38,590 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:38,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:38,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1335071984, now seen corresponding path program 18 times [2024-06-28 03:47:38,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:38,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401340044] [2024-06-28 03:47:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:38,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:39,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:39,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401340044] [2024-06-28 03:47:39,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401340044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:39,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:39,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281240843] [2024-06-28 03:47:39,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:39,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:39,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:39,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:40,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:40,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 300 transitions, 2902 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:40,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:40,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:40,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:40,642 INFO L124 PetriNetUnfolderBase]: 850/1531 cut-off events. [2024-06-28 03:47:40,642 INFO L125 PetriNetUnfolderBase]: For 223223/223223 co-relation queries the response was YES. [2024-06-28 03:47:40,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10348 conditions, 1531 events. 850/1531 cut-off events. For 223223/223223 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8576 event pairs, 137 based on Foata normal form. 2/1531 useless extension candidates. Maximal degree in co-relation 10188. Up to 1435 conditions per place. [2024-06-28 03:47:40,659 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 36 changer transitions 0/313 dead transitions. [2024-06-28 03:47:40,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 313 transitions, 3556 flow [2024-06-28 03:47:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:47:40,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:47:40,660 INFO L175 Difference]: Start difference. First operand has 354 places, 300 transitions, 2902 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:47:40,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 313 transitions, 3556 flow [2024-06-28 03:47:41,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 313 transitions, 3385 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:47:41,547 INFO L231 Difference]: Finished difference. Result has 353 places, 300 transitions, 2807 flow [2024-06-28 03:47:41,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2807, PETRI_PLACES=353, PETRI_TRANSITIONS=300} [2024-06-28 03:47:41,547 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-28 03:47:41,547 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 300 transitions, 2807 flow [2024-06-28 03:47:41,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:41,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:41,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:41,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:47:41,548 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:41,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:41,549 INFO L85 PathProgramCache]: Analyzing trace with hash 591177575, now seen corresponding path program 13 times [2024-06-28 03:47:41,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:41,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899303205] [2024-06-28 03:47:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:41,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:42,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:42,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899303205] [2024-06-28 03:47:42,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899303205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:42,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:42,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843800294] [2024-06-28 03:47:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:42,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:42,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:43,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:43,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 300 transitions, 2807 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:43,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:43,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:43,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:43,455 INFO L124 PetriNetUnfolderBase]: 854/1539 cut-off events. [2024-06-28 03:47:43,455 INFO L125 PetriNetUnfolderBase]: For 226796/226796 co-relation queries the response was YES. [2024-06-28 03:47:43,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10351 conditions, 1539 events. 854/1539 cut-off events. For 226796/226796 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8624 event pairs, 135 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 10190. Up to 1451 conditions per place. [2024-06-28 03:47:43,474 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 281 selfloop transitions, 31 changer transitions 0/314 dead transitions. [2024-06-28 03:47:43,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 314 transitions, 3495 flow [2024-06-28 03:47:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:47:43,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:47:43,475 INFO L175 Difference]: Start difference. First operand has 353 places, 300 transitions, 2807 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:47:43,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 314 transitions, 3495 flow [2024-06-28 03:47:44,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 314 transitions, 3393 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:44,295 INFO L231 Difference]: Finished difference. Result has 354 places, 301 transitions, 2803 flow [2024-06-28 03:47:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2803, PETRI_PLACES=354, PETRI_TRANSITIONS=301} [2024-06-28 03:47:44,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-28 03:47:44,296 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 301 transitions, 2803 flow [2024-06-28 03:47:44,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:44,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:44,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:44,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:47:44,296 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1334864439, now seen corresponding path program 16 times [2024-06-28 03:47:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677165769] [2024-06-28 03:47:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:45,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677165769] [2024-06-28 03:47:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677165769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80044685] [2024-06-28 03:47:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:45,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:45,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:45,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:45,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 301 transitions, 2803 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:45,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:45,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:45,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:46,481 INFO L124 PetriNetUnfolderBase]: 828/1487 cut-off events. [2024-06-28 03:47:46,481 INFO L125 PetriNetUnfolderBase]: For 156140/156140 co-relation queries the response was YES. [2024-06-28 03:47:46,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8798 conditions, 1487 events. 828/1487 cut-off events. For 156140/156140 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8351 event pairs, 106 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 8636. Up to 1326 conditions per place. [2024-06-28 03:47:46,498 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 48 changer transitions 0/316 dead transitions. [2024-06-28 03:47:46,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 316 transitions, 3473 flow [2024-06-28 03:47:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:47:46,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:47:46,499 INFO L175 Difference]: Start difference. First operand has 354 places, 301 transitions, 2803 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:47:46,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 316 transitions, 3473 flow [2024-06-28 03:47:47,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 316 transitions, 3327 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:47,169 INFO L231 Difference]: Finished difference. Result has 356 places, 301 transitions, 2758 flow [2024-06-28 03:47:47,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2758, PETRI_PLACES=356, PETRI_TRANSITIONS=301} [2024-06-28 03:47:47,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:47:47,170 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 301 transitions, 2758 flow [2024-06-28 03:47:47,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:47,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:47,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:47,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:47:47,170 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:47,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1700818431, now seen corresponding path program 14 times [2024-06-28 03:47:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:47,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766220348] [2024-06-28 03:47:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766220348] [2024-06-28 03:47:48,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766220348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:48,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842914443] [2024-06-28 03:47:48,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:48,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:48,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:48,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:48,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 301 transitions, 2758 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:48,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:48,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:48,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:48,946 INFO L124 PetriNetUnfolderBase]: 832/1495 cut-off events. [2024-06-28 03:47:48,946 INFO L125 PetriNetUnfolderBase]: For 158417/158417 co-relation queries the response was YES. [2024-06-28 03:47:48,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8764 conditions, 1495 events. 832/1495 cut-off events. For 158417/158417 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8390 event pairs, 126 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 8602. Up to 1449 conditions per place. [2024-06-28 03:47:48,961 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 294 selfloop transitions, 18 changer transitions 0/314 dead transitions. [2024-06-28 03:47:48,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 314 transitions, 3442 flow [2024-06-28 03:47:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:47:48,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:47:48,963 INFO L175 Difference]: Start difference. First operand has 356 places, 301 transitions, 2758 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:47:48,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 314 transitions, 3442 flow [2024-06-28 03:47:49,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 314 transitions, 3334 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:47:49,632 INFO L231 Difference]: Finished difference. Result has 356 places, 302 transitions, 2724 flow [2024-06-28 03:47:49,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2724, PETRI_PLACES=356, PETRI_TRANSITIONS=302} [2024-06-28 03:47:49,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:47:49,632 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 302 transitions, 2724 flow [2024-06-28 03:47:49,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:49,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:49,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:49,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:47:49,633 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:49,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1561488085, now seen corresponding path program 15 times [2024-06-28 03:47:49,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:49,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13131324] [2024-06-28 03:47:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:50,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:50,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13131324] [2024-06-28 03:47:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13131324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:50,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:50,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:50,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151490787] [2024-06-28 03:47:50,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:50,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:50,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:50,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 302 transitions, 2724 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:50,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:50,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:50,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:51,396 INFO L124 PetriNetUnfolderBase]: 829/1490 cut-off events. [2024-06-28 03:47:51,396 INFO L125 PetriNetUnfolderBase]: For 144980/144980 co-relation queries the response was YES. [2024-06-28 03:47:51,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 1490 events. 829/1490 cut-off events. For 144980/144980 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8393 event pairs, 125 based on Foata normal form. 2/1490 useless extension candidates. Maximal degree in co-relation 8240. Up to 1441 conditions per place. [2024-06-28 03:47:51,413 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 292 selfloop transitions, 20 changer transitions 0/314 dead transitions. [2024-06-28 03:47:51,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 314 transitions, 3378 flow [2024-06-28 03:47:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:47:51,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:47:51,414 INFO L175 Difference]: Start difference. First operand has 356 places, 302 transitions, 2724 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:47:51,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 314 transitions, 3378 flow [2024-06-28 03:47:52,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 314 transitions, 3314 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:47:52,015 INFO L231 Difference]: Finished difference. Result has 358 places, 302 transitions, 2705 flow [2024-06-28 03:47:52,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2705, PETRI_PLACES=358, PETRI_TRANSITIONS=302} [2024-06-28 03:47:52,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 03:47:52,015 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 302 transitions, 2705 flow [2024-06-28 03:47:52,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:52,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:52,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:52,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:47:52,016 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:52,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1434902105, now seen corresponding path program 17 times [2024-06-28 03:47:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980619007] [2024-06-28 03:47:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:53,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980619007] [2024-06-28 03:47:53,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980619007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:53,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:53,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:53,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524646571] [2024-06-28 03:47:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:53,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:53,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:53,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:53,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 302 transitions, 2705 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:53,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:53,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:53,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:54,450 INFO L124 PetriNetUnfolderBase]: 825/1484 cut-off events. [2024-06-28 03:47:54,450 INFO L125 PetriNetUnfolderBase]: For 130707/130707 co-relation queries the response was YES. [2024-06-28 03:47:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8084 conditions, 1484 events. 825/1484 cut-off events. For 130707/130707 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8348 event pairs, 120 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 7920. Up to 1418 conditions per place. [2024-06-28 03:47:54,465 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 24 changer transitions 0/317 dead transitions. [2024-06-28 03:47:54,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 317 transitions, 3377 flow [2024-06-28 03:47:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:47:54,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:47:54,466 INFO L175 Difference]: Start difference. First operand has 358 places, 302 transitions, 2705 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:47:54,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 317 transitions, 3377 flow [2024-06-28 03:47:55,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 317 transitions, 3233 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:55,046 INFO L231 Difference]: Finished difference. Result has 360 places, 302 transitions, 2614 flow [2024-06-28 03:47:55,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2614, PETRI_PLACES=360, PETRI_TRANSITIONS=302} [2024-06-28 03:47:55,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 03:47:55,046 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 302 transitions, 2614 flow [2024-06-28 03:47:55,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:55,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:55,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:55,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:47:55,047 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:55,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash 798240427, now seen corresponding path program 18 times [2024-06-28 03:47:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:55,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183928145] [2024-06-28 03:47:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:55,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:56,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183928145] [2024-06-28 03:47:56,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183928145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:56,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:56,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:56,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501335960] [2024-06-28 03:47:56,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:56,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:56,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:56,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:56,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 302 transitions, 2614 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:56,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:56,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:56,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:56,988 INFO L124 PetriNetUnfolderBase]: 821/1478 cut-off events. [2024-06-28 03:47:56,989 INFO L125 PetriNetUnfolderBase]: For 115768/115768 co-relation queries the response was YES. [2024-06-28 03:47:57,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7671 conditions, 1478 events. 821/1478 cut-off events. For 115768/115768 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8311 event pairs, 124 based on Foata normal form. 2/1478 useless extension candidates. Maximal degree in co-relation 7506. Up to 1416 conditions per place. [2024-06-28 03:47:57,004 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 25 changer transitions 0/318 dead transitions. [2024-06-28 03:47:57,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 318 transitions, 3322 flow [2024-06-28 03:47:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:47:57,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:47:57,005 INFO L175 Difference]: Start difference. First operand has 360 places, 302 transitions, 2614 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:47:57,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 318 transitions, 3322 flow [2024-06-28 03:47:57,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 318 transitions, 3094 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-28 03:47:57,461 INFO L231 Difference]: Finished difference. Result has 356 places, 304 transitions, 2484 flow [2024-06-28 03:47:57,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2484, PETRI_PLACES=356, PETRI_TRANSITIONS=304} [2024-06-28 03:47:57,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:47:57,462 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 304 transitions, 2484 flow [2024-06-28 03:47:57,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:57,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:57,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:47:57,463 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:57,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -128153116, now seen corresponding path program 1 times [2024-06-28 03:47:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942042136] [2024-06-28 03:47:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:59,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:59,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942042136] [2024-06-28 03:47:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942042136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:59,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:59,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:59,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983847398] [2024-06-28 03:47:59,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:59,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:59,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:59,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:47:59,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 304 transitions, 2484 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:59,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:59,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:47:59,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:59,894 INFO L124 PetriNetUnfolderBase]: 869/1578 cut-off events. [2024-06-28 03:47:59,894 INFO L125 PetriNetUnfolderBase]: For 263934/263934 co-relation queries the response was YES. [2024-06-28 03:47:59,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 1578 events. 869/1578 cut-off events. For 263934/263934 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9003 event pairs, 140 based on Foata normal form. 8/1584 useless extension candidates. Maximal degree in co-relation 9259. Up to 1278 conditions per place. [2024-06-28 03:47:59,908 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 297 selfloop transitions, 22 changer transitions 16/337 dead transitions. [2024-06-28 03:47:59,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 337 transitions, 3590 flow [2024-06-28 03:47:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:47:59,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 03:47:59,909 INFO L175 Difference]: Start difference. First operand has 356 places, 304 transitions, 2484 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:47:59,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 337 transitions, 3590 flow [2024-06-28 03:48:00,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 337 transitions, 3512 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:48:00,591 INFO L231 Difference]: Finished difference. Result has 359 places, 300 transitions, 2431 flow [2024-06-28 03:48:00,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2431, PETRI_PLACES=359, PETRI_TRANSITIONS=300} [2024-06-28 03:48:00,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-28 03:48:00,592 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 300 transitions, 2431 flow [2024-06-28 03:48:00,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:00,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:00,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:00,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:48:00,592 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:00,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:00,592 INFO L85 PathProgramCache]: Analyzing trace with hash -70060666, now seen corresponding path program 2 times [2024-06-28 03:48:00,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:00,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383974405] [2024-06-28 03:48:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:00,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:01,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:01,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383974405] [2024-06-28 03:48:01,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383974405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:01,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:01,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227501946] [2024-06-28 03:48:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:01,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:01,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:01,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:01,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 300 transitions, 2431 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:01,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:01,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:01,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:02,460 INFO L124 PetriNetUnfolderBase]: 849/1540 cut-off events. [2024-06-28 03:48:02,460 INFO L125 PetriNetUnfolderBase]: For 267676/267676 co-relation queries the response was YES. [2024-06-28 03:48:02,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9288 conditions, 1540 events. 849/1540 cut-off events. For 267676/267676 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8724 event pairs, 130 based on Foata normal form. 8/1546 useless extension candidates. Maximal degree in co-relation 9125. Up to 1278 conditions per place. [2024-06-28 03:48:02,479 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 293 selfloop transitions, 20 changer transitions 13/328 dead transitions. [2024-06-28 03:48:02,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 328 transitions, 3505 flow [2024-06-28 03:48:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:48:02,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:48:02,480 INFO L175 Difference]: Start difference. First operand has 359 places, 300 transitions, 2431 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:48:02,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 328 transitions, 3505 flow [2024-06-28 03:48:03,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 328 transitions, 3453 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:48:03,202 INFO L231 Difference]: Finished difference. Result has 353 places, 294 transitions, 2389 flow [2024-06-28 03:48:03,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2389, PETRI_PLACES=353, PETRI_TRANSITIONS=294} [2024-06-28 03:48:03,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-28 03:48:03,202 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 294 transitions, 2389 flow [2024-06-28 03:48:03,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:03,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:03,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:48:03,203 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:03,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash -898417548, now seen corresponding path program 3 times [2024-06-28 03:48:03,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:03,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211414977] [2024-06-28 03:48:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:04,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211414977] [2024-06-28 03:48:04,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211414977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:04,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:04,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126050564] [2024-06-28 03:48:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:04,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:04,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:04,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:04,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:04,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 294 transitions, 2389 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:04,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:04,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:04,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:05,093 INFO L124 PetriNetUnfolderBase]: 830/1507 cut-off events. [2024-06-28 03:48:05,093 INFO L125 PetriNetUnfolderBase]: For 271677/271677 co-relation queries the response was YES. [2024-06-28 03:48:05,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8863 conditions, 1507 events. 830/1507 cut-off events. For 271677/271677 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8489 event pairs, 137 based on Foata normal form. 12/1517 useless extension candidates. Maximal degree in co-relation 8703. Up to 1367 conditions per place. [2024-06-28 03:48:05,118 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 25 changer transitions 7/317 dead transitions. [2024-06-28 03:48:05,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 3149 flow [2024-06-28 03:48:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 03:48:05,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 03:48:05,120 INFO L175 Difference]: Start difference. First operand has 353 places, 294 transitions, 2389 flow. Second operand 11 states and 128 transitions. [2024-06-28 03:48:05,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 3149 flow [2024-06-28 03:48:05,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 317 transitions, 3101 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 03:48:05,862 INFO L231 Difference]: Finished difference. Result has 345 places, 292 transitions, 2399 flow [2024-06-28 03:48:05,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2399, PETRI_PLACES=345, PETRI_TRANSITIONS=292} [2024-06-28 03:48:05,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-28 03:48:05,862 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 292 transitions, 2399 flow [2024-06-28 03:48:05,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:05,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:05,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:05,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:48:05,863 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:05,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1865714000, now seen corresponding path program 4 times [2024-06-28 03:48:05,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:05,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502389965] [2024-06-28 03:48:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:05,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:07,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502389965] [2024-06-28 03:48:07,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502389965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:07,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:07,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235293714] [2024-06-28 03:48:07,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:07,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:07,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:07,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 292 transitions, 2399 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:07,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:07,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:07,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:07,715 INFO L124 PetriNetUnfolderBase]: 816/1485 cut-off events. [2024-06-28 03:48:07,715 INFO L125 PetriNetUnfolderBase]: For 225073/225073 co-relation queries the response was YES. [2024-06-28 03:48:07,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8683 conditions, 1485 events. 816/1485 cut-off events. For 225073/225073 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8340 event pairs, 129 based on Foata normal form. 8/1491 useless extension candidates. Maximal degree in co-relation 8527. Up to 1278 conditions per place. [2024-06-28 03:48:07,731 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 284 selfloop transitions, 17 changer transitions 15/318 dead transitions. [2024-06-28 03:48:07,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 318 transitions, 3403 flow [2024-06-28 03:48:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:48:07,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:48:07,732 INFO L175 Difference]: Start difference. First operand has 345 places, 292 transitions, 2399 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:48:07,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 318 transitions, 3403 flow [2024-06-28 03:48:08,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 318 transitions, 3323 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:48:08,208 INFO L231 Difference]: Finished difference. Result has 347 places, 282 transitions, 2283 flow [2024-06-28 03:48:08,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2283, PETRI_PLACES=347, PETRI_TRANSITIONS=282} [2024-06-28 03:48:08,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-28 03:48:08,209 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 282 transitions, 2283 flow [2024-06-28 03:48:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:08,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:08,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:08,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:48:08,209 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:08,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1672820252, now seen corresponding path program 5 times [2024-06-28 03:48:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:08,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559539928] [2024-06-28 03:48:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559539928] [2024-06-28 03:48:09,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559539928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:09,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:09,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:09,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805621339] [2024-06-28 03:48:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:09,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:09,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:09,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:09,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 282 transitions, 2283 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:09,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:09,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:09,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:10,300 INFO L124 PetriNetUnfolderBase]: 769/1391 cut-off events. [2024-06-28 03:48:10,300 INFO L125 PetriNetUnfolderBase]: For 168346/168346 co-relation queries the response was YES. [2024-06-28 03:48:10,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7030 conditions, 1391 events. 769/1391 cut-off events. For 168346/168346 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7719 event pairs, 118 based on Foata normal form. 10/1399 useless extension candidates. Maximal degree in co-relation 6873. Up to 1278 conditions per place. [2024-06-28 03:48:10,315 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 11 changer transitions 25/305 dead transitions. [2024-06-28 03:48:10,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 305 transitions, 2987 flow [2024-06-28 03:48:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 03:48:10,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 03:48:10,316 INFO L175 Difference]: Start difference. First operand has 347 places, 282 transitions, 2283 flow. Second operand 12 states and 131 transitions. [2024-06-28 03:48:10,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 305 transitions, 2987 flow [2024-06-28 03:48:10,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 305 transitions, 2932 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-28 03:48:10,712 INFO L231 Difference]: Finished difference. Result has 336 places, 273 transitions, 2185 flow [2024-06-28 03:48:10,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2230, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2185, PETRI_PLACES=336, PETRI_TRANSITIONS=273} [2024-06-28 03:48:10,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 03:48:10,712 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 273 transitions, 2185 flow [2024-06-28 03:48:10,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:10,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:10,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:10,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:48:10,713 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:10,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1747818662, now seen corresponding path program 1 times [2024-06-28 03:48:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819909578] [2024-06-28 03:48:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819909578] [2024-06-28 03:48:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819909578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:12,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:12,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361732749] [2024-06-28 03:48:12,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:12,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:12,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:12,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 273 transitions, 2185 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:13,095 INFO L124 PetriNetUnfolderBase]: 733/1318 cut-off events. [2024-06-28 03:48:13,095 INFO L125 PetriNetUnfolderBase]: For 102192/102192 co-relation queries the response was YES. [2024-06-28 03:48:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6703 conditions, 1318 events. 733/1318 cut-off events. For 102192/102192 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7297 event pairs, 66 based on Foata normal form. 2/1318 useless extension candidates. Maximal degree in co-relation 6550. Up to 980 conditions per place. [2024-06-28 03:48:13,109 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 207 selfloop transitions, 85 changer transitions 0/294 dead transitions. [2024-06-28 03:48:13,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 294 transitions, 2867 flow [2024-06-28 03:48:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:48:13,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:48:13,110 INFO L175 Difference]: Start difference. First operand has 336 places, 273 transitions, 2185 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:48:13,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 294 transitions, 2867 flow [2024-06-28 03:48:13,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 294 transitions, 2819 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:48:13,541 INFO L231 Difference]: Finished difference. Result has 322 places, 276 transitions, 2378 flow [2024-06-28 03:48:13,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2378, PETRI_PLACES=322, PETRI_TRANSITIONS=276} [2024-06-28 03:48:13,541 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 03:48:13,541 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 276 transitions, 2378 flow [2024-06-28 03:48:13,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:13,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:13,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:13,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:48:13,542 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:13,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:13,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1747638738, now seen corresponding path program 6 times [2024-06-28 03:48:13,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:13,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642545319] [2024-06-28 03:48:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642545319] [2024-06-28 03:48:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642545319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:14,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:14,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676279867] [2024-06-28 03:48:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:14,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:14,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 276 transitions, 2378 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:14,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:14,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:14,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:15,447 INFO L124 PetriNetUnfolderBase]: 749/1354 cut-off events. [2024-06-28 03:48:15,447 INFO L125 PetriNetUnfolderBase]: For 145565/145565 co-relation queries the response was YES. [2024-06-28 03:48:15,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1354 events. 749/1354 cut-off events. For 145565/145565 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7486 event pairs, 96 based on Foata normal form. 10/1362 useless extension candidates. Maximal degree in co-relation 6830. Up to 736 conditions per place. [2024-06-28 03:48:15,461 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 120 changer transitions 8/299 dead transitions. [2024-06-28 03:48:15,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 3068 flow [2024-06-28 03:48:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:48:15,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 03:48:15,462 INFO L175 Difference]: Start difference. First operand has 322 places, 276 transitions, 2378 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:48:15,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 3068 flow [2024-06-28 03:48:15,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 299 transitions, 2885 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:15,915 INFO L231 Difference]: Finished difference. Result has 326 places, 272 transitions, 2411 flow [2024-06-28 03:48:15,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2411, PETRI_PLACES=326, PETRI_TRANSITIONS=272} [2024-06-28 03:48:15,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-28 03:48:15,915 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 272 transitions, 2411 flow [2024-06-28 03:48:15,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:15,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:15,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:15,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:48:15,916 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:15,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1743050118, now seen corresponding path program 7 times [2024-06-28 03:48:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429444719] [2024-06-28 03:48:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:15,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429444719] [2024-06-28 03:48:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429444719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:16,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666048780] [2024-06-28 03:48:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:17,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:17,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 272 transitions, 2411 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:17,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:17,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:17,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:17,636 INFO L124 PetriNetUnfolderBase]: 771/1404 cut-off events. [2024-06-28 03:48:17,636 INFO L125 PetriNetUnfolderBase]: For 212588/212588 co-relation queries the response was YES. [2024-06-28 03:48:17,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8675 conditions, 1404 events. 771/1404 cut-off events. For 212588/212588 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7810 event pairs, 116 based on Foata normal form. 8/1410 useless extension candidates. Maximal degree in co-relation 8524. Up to 656 conditions per place. [2024-06-28 03:48:17,651 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 114 changer transitions 10/300 dead transitions. [2024-06-28 03:48:17,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 300 transitions, 3395 flow [2024-06-28 03:48:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:48:17,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 03:48:17,652 INFO L175 Difference]: Start difference. First operand has 326 places, 272 transitions, 2411 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:48:17,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 300 transitions, 3395 flow [2024-06-28 03:48:18,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 300 transitions, 3143 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 03:48:18,269 INFO L231 Difference]: Finished difference. Result has 324 places, 269 transitions, 2375 flow [2024-06-28 03:48:18,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2375, PETRI_PLACES=324, PETRI_TRANSITIONS=269} [2024-06-28 03:48:18,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 03:48:18,270 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 269 transitions, 2375 flow [2024-06-28 03:48:18,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:18,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:18,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:18,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:48:18,271 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:18,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1743165438, now seen corresponding path program 8 times [2024-06-28 03:48:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949104165] [2024-06-28 03:48:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:18,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:19,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:19,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949104165] [2024-06-28 03:48:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949104165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:19,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052741160] [2024-06-28 03:48:19,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:19,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:19,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:19,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 269 transitions, 2375 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:19,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:19,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:19,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:20,470 INFO L124 PetriNetUnfolderBase]: 761/1386 cut-off events. [2024-06-28 03:48:20,470 INFO L125 PetriNetUnfolderBase]: For 212492/212492 co-relation queries the response was YES. [2024-06-28 03:48:20,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8592 conditions, 1386 events. 761/1386 cut-off events. For 212492/212492 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7730 event pairs, 90 based on Foata normal form. 8/1392 useless extension candidates. Maximal degree in co-relation 8442. Up to 974 conditions per place. [2024-06-28 03:48:20,483 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 187 selfloop transitions, 91 changer transitions 12/292 dead transitions. [2024-06-28 03:48:20,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 292 transitions, 3039 flow [2024-06-28 03:48:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:48:20,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 03:48:20,484 INFO L175 Difference]: Start difference. First operand has 324 places, 269 transitions, 2375 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:48:20,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 292 transitions, 3039 flow [2024-06-28 03:48:21,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 292 transitions, 2819 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:21,126 INFO L231 Difference]: Finished difference. Result has 322 places, 265 transitions, 2315 flow [2024-06-28 03:48:21,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2315, PETRI_PLACES=322, PETRI_TRANSITIONS=265} [2024-06-28 03:48:21,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 03:48:21,127 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 265 transitions, 2315 flow [2024-06-28 03:48:21,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:21,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:21,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:21,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:48:21,127 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:21,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1747634088, now seen corresponding path program 9 times [2024-06-28 03:48:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:21,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614264741] [2024-06-28 03:48:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614264741] [2024-06-28 03:48:22,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614264741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:22,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:22,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062908592] [2024-06-28 03:48:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:22,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:22,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 265 transitions, 2315 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:22,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:22,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:22,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:22,914 INFO L124 PetriNetUnfolderBase]: 782/1429 cut-off events. [2024-06-28 03:48:22,914 INFO L125 PetriNetUnfolderBase]: For 269042/269042 co-relation queries the response was YES. [2024-06-28 03:48:22,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 1429 events. 782/1429 cut-off events. For 269042/269042 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7974 event pairs, 127 based on Foata normal form. 8/1435 useless extension candidates. Maximal degree in co-relation 9682. Up to 760 conditions per place. [2024-06-28 03:48:22,930 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 113 changer transitions 8/292 dead transitions. [2024-06-28 03:48:22,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 292 transitions, 3249 flow [2024-06-28 03:48:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:48:22,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-28 03:48:22,931 INFO L175 Difference]: Start difference. First operand has 322 places, 265 transitions, 2315 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:48:22,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 292 transitions, 3249 flow [2024-06-28 03:48:23,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 292 transitions, 3063 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:23,818 INFO L231 Difference]: Finished difference. Result has 317 places, 262 transitions, 2342 flow [2024-06-28 03:48:23,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2342, PETRI_PLACES=317, PETRI_TRANSITIONS=262} [2024-06-28 03:48:23,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-28 03:48:23,818 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 262 transitions, 2342 flow [2024-06-28 03:48:23,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:23,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:23,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:23,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:48:23,819 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:23,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash -47956936, now seen corresponding path program 10 times [2024-06-28 03:48:23,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:23,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162698588] [2024-06-28 03:48:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:23,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:25,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:25,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162698588] [2024-06-28 03:48:25,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162698588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:25,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:25,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:25,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267391123] [2024-06-28 03:48:25,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:25,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:25,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:25,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:25,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:25,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:25,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 262 transitions, 2342 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:25,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:25,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:26,427 INFO L124 PetriNetUnfolderBase]: 765/1398 cut-off events. [2024-06-28 03:48:26,427 INFO L125 PetriNetUnfolderBase]: For 252396/252396 co-relation queries the response was YES. [2024-06-28 03:48:26,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9260 conditions, 1398 events. 765/1398 cut-off events. For 252396/252396 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7766 event pairs, 127 based on Foata normal form. 10/1406 useless extension candidates. Maximal degree in co-relation 9114. Up to 797 conditions per place. [2024-06-28 03:48:26,441 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 113 changer transitions 9/286 dead transitions. [2024-06-28 03:48:26,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 286 transitions, 3008 flow [2024-06-28 03:48:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:48:26,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 03:48:26,442 INFO L175 Difference]: Start difference. First operand has 317 places, 262 transitions, 2342 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:48:26,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 286 transitions, 3008 flow [2024-06-28 03:48:27,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 286 transitions, 2781 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:27,130 INFO L231 Difference]: Finished difference. Result has 316 places, 259 transitions, 2321 flow [2024-06-28 03:48:27,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2321, PETRI_PLACES=316, PETRI_TRANSITIONS=259} [2024-06-28 03:48:27,131 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 03:48:27,131 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 259 transitions, 2321 flow [2024-06-28 03:48:27,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:27,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:27,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:27,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:48:27,131 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:27,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash 118283788, now seen corresponding path program 2 times [2024-06-28 03:48:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:27,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613501751] [2024-06-28 03:48:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:28,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:28,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613501751] [2024-06-28 03:48:28,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613501751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:28,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:28,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796110473] [2024-06-28 03:48:28,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:28,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:29,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:29,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 259 transitions, 2321 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:29,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:29,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:29,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:29,748 INFO L124 PetriNetUnfolderBase]: 759/1392 cut-off events. [2024-06-28 03:48:29,748 INFO L125 PetriNetUnfolderBase]: For 259389/259389 co-relation queries the response was YES. [2024-06-28 03:48:29,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9247 conditions, 1392 events. 759/1392 cut-off events. For 259389/259389 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7748 event pairs, 129 based on Foata normal form. 12/1402 useless extension candidates. Maximal degree in co-relation 9102. Up to 793 conditions per place. [2024-06-28 03:48:29,765 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 109 changer transitions 12/284 dead transitions. [2024-06-28 03:48:29,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 284 transitions, 3015 flow [2024-06-28 03:48:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:48:29,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 03:48:29,766 INFO L175 Difference]: Start difference. First operand has 316 places, 259 transitions, 2321 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:48:29,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 284 transitions, 3015 flow [2024-06-28 03:48:30,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 284 transitions, 2783 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:48:30,488 INFO L231 Difference]: Finished difference. Result has 314 places, 254 transitions, 2299 flow [2024-06-28 03:48:30,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2299, PETRI_PLACES=314, PETRI_TRANSITIONS=254} [2024-06-28 03:48:30,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 03:48:30,489 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 254 transitions, 2299 flow [2024-06-28 03:48:30,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:30,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:30,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:30,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:48:30,489 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:30,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 118099214, now seen corresponding path program 11 times [2024-06-28 03:48:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:30,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225360169] [2024-06-28 03:48:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:30,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:32,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225360169] [2024-06-28 03:48:32,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225360169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:32,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:32,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310851322] [2024-06-28 03:48:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:32,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:32,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 254 transitions, 2299 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:32,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:32,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:32,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:32,893 INFO L124 PetriNetUnfolderBase]: 752/1391 cut-off events. [2024-06-28 03:48:32,893 INFO L125 PetriNetUnfolderBase]: For 265170/265170 co-relation queries the response was YES. [2024-06-28 03:48:32,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9824 conditions, 1391 events. 752/1391 cut-off events. For 265170/265170 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7810 event pairs, 110 based on Foata normal form. 8/1397 useless extension candidates. Maximal degree in co-relation 9680. Up to 945 conditions per place. [2024-06-28 03:48:32,908 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 80 changer transitions 8/282 dead transitions. [2024-06-28 03:48:32,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 282 transitions, 3209 flow [2024-06-28 03:48:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:48:32,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 03:48:32,909 INFO L175 Difference]: Start difference. First operand has 314 places, 254 transitions, 2299 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:48:32,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 282 transitions, 3209 flow [2024-06-28 03:48:33,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 282 transitions, 2946 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-28 03:48:33,533 INFO L231 Difference]: Finished difference. Result has 312 places, 251 transitions, 2181 flow [2024-06-28 03:48:33,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2181, PETRI_PLACES=312, PETRI_TRANSITIONS=251} [2024-06-28 03:48:33,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 03:48:33,534 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 251 transitions, 2181 flow [2024-06-28 03:48:33,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:33,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:33,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:33,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:48:33,534 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:33,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash 124770538, now seen corresponding path program 3 times [2024-06-28 03:48:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:33,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931059646] [2024-06-28 03:48:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:33,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931059646] [2024-06-28 03:48:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931059646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:34,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:34,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475319251] [2024-06-28 03:48:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:34,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:34,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:35,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:35,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 251 transitions, 2181 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:35,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:35,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:35,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:35,554 INFO L124 PetriNetUnfolderBase]: 730/1345 cut-off events. [2024-06-28 03:48:35,554 INFO L125 PetriNetUnfolderBase]: For 219164/219164 co-relation queries the response was YES. [2024-06-28 03:48:35,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9268 conditions, 1345 events. 730/1345 cut-off events. For 219164/219164 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7462 event pairs, 115 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 9124. Up to 1007 conditions per place. [2024-06-28 03:48:35,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 81 changer transitions 0/269 dead transitions. [2024-06-28 03:48:35,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 269 transitions, 2795 flow [2024-06-28 03:48:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:48:35,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:48:35,566 INFO L175 Difference]: Start difference. First operand has 312 places, 251 transitions, 2181 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:48:35,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 269 transitions, 2795 flow [2024-06-28 03:48:36,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 269 transitions, 2631 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:48:36,306 INFO L231 Difference]: Finished difference. Result has 308 places, 252 transitions, 2219 flow [2024-06-28 03:48:36,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2219, PETRI_PLACES=308, PETRI_TRANSITIONS=252} [2024-06-28 03:48:36,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 03:48:36,306 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 252 transitions, 2219 flow [2024-06-28 03:48:36,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:36,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:36,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:36,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:48:36,307 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:36,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 124532954, now seen corresponding path program 12 times [2024-06-28 03:48:36,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:36,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128982090] [2024-06-28 03:48:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:37,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128982090] [2024-06-28 03:48:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128982090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:37,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748365500] [2024-06-28 03:48:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:37,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:38,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:38,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 252 transitions, 2219 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:38,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:38,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:38,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:38,853 INFO L124 PetriNetUnfolderBase]: 725/1342 cut-off events. [2024-06-28 03:48:38,854 INFO L125 PetriNetUnfolderBase]: For 231827/231827 co-relation queries the response was YES. [2024-06-28 03:48:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1342 events. 725/1342 cut-off events. For 231827/231827 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7498 event pairs, 106 based on Foata normal form. 16/1356 useless extension candidates. Maximal degree in co-relation 7964. Up to 930 conditions per place. [2024-06-28 03:48:38,867 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 77 changer transitions 16/275 dead transitions. [2024-06-28 03:48:38,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 275 transitions, 2859 flow [2024-06-28 03:48:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:48:38,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 03:48:38,868 INFO L175 Difference]: Start difference. First operand has 308 places, 252 transitions, 2219 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:48:38,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 275 transitions, 2859 flow [2024-06-28 03:48:39,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 275 transitions, 2667 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:48:39,445 INFO L231 Difference]: Finished difference. Result has 311 places, 246 transitions, 2145 flow [2024-06-28 03:48:39,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2145, PETRI_PLACES=311, PETRI_TRANSITIONS=246} [2024-06-28 03:48:39,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-28 03:48:39,446 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 246 transitions, 2145 flow [2024-06-28 03:48:39,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:39,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:39,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:48:39,446 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:39,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 124778908, now seen corresponding path program 4 times [2024-06-28 03:48:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407162951] [2024-06-28 03:48:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:40,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407162951] [2024-06-28 03:48:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407162951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:40,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:40,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:40,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023158407] [2024-06-28 03:48:40,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:40,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:40,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:40,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 246 transitions, 2145 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:40,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:40,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:40,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:41,360 INFO L124 PetriNetUnfolderBase]: 685/1262 cut-off events. [2024-06-28 03:48:41,360 INFO L125 PetriNetUnfolderBase]: For 157630/157630 co-relation queries the response was YES. [2024-06-28 03:48:41,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7815 conditions, 1262 events. 685/1262 cut-off events. For 157630/157630 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6933 event pairs, 86 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 7672. Up to 912 conditions per place. [2024-06-28 03:48:41,373 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 81 changer transitions 0/264 dead transitions. [2024-06-28 03:48:41,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 264 transitions, 2749 flow [2024-06-28 03:48:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 03:48:41,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 03:48:41,374 INFO L175 Difference]: Start difference. First operand has 311 places, 246 transitions, 2145 flow. Second operand 11 states and 128 transitions. [2024-06-28 03:48:41,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 264 transitions, 2749 flow [2024-06-28 03:48:41,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 264 transitions, 2579 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:48:41,869 INFO L231 Difference]: Finished difference. Result has 303 places, 247 transitions, 2179 flow [2024-06-28 03:48:41,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2179, PETRI_PLACES=303, PETRI_TRANSITIONS=247} [2024-06-28 03:48:41,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-28 03:48:41,869 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 247 transitions, 2179 flow [2024-06-28 03:48:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:41,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:41,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:48:41,869 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:41,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash 390188360, now seen corresponding path program 5 times [2024-06-28 03:48:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:41,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018092333] [2024-06-28 03:48:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:43,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018092333] [2024-06-28 03:48:43,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018092333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:43,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:43,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929267781] [2024-06-28 03:48:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:43,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:43,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:43,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 247 transitions, 2179 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:43,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:43,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:43,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:43,906 INFO L124 PetriNetUnfolderBase]: 689/1270 cut-off events. [2024-06-28 03:48:43,906 INFO L125 PetriNetUnfolderBase]: For 148176/148176 co-relation queries the response was YES. [2024-06-28 03:48:43,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7826 conditions, 1270 events. 689/1270 cut-off events. For 148176/148176 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6961 event pairs, 104 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 7686. Up to 1102 conditions per place. [2024-06-28 03:48:43,918 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 212 selfloop transitions, 52 changer transitions 0/266 dead transitions. [2024-06-28 03:48:43,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 266 transitions, 2791 flow [2024-06-28 03:48:43,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:48:43,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:48:43,919 INFO L175 Difference]: Start difference. First operand has 303 places, 247 transitions, 2179 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:48:43,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 266 transitions, 2791 flow [2024-06-28 03:48:44,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 266 transitions, 2601 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:48:44,448 INFO L231 Difference]: Finished difference. Result has 305 places, 248 transitions, 2133 flow [2024-06-28 03:48:44,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2133, PETRI_PLACES=305, PETRI_TRANSITIONS=248} [2024-06-28 03:48:44,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 03:48:44,448 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 248 transitions, 2133 flow [2024-06-28 03:48:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:44,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:44,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:44,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:48:44,448 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:44,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2109001912, now seen corresponding path program 6 times [2024-06-28 03:48:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:44,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130549843] [2024-06-28 03:48:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:44,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:45,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:45,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130549843] [2024-06-28 03:48:45,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130549843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:45,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:45,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879261160] [2024-06-28 03:48:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:45,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:45,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:45,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:45,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 248 transitions, 2133 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:45,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:45,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:45,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:46,404 INFO L124 PetriNetUnfolderBase]: 700/1291 cut-off events. [2024-06-28 03:48:46,404 INFO L125 PetriNetUnfolderBase]: For 165521/165521 co-relation queries the response was YES. [2024-06-28 03:48:46,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8153 conditions, 1291 events. 700/1291 cut-off events. For 165521/165521 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7117 event pairs, 105 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 8012. Up to 1098 conditions per place. [2024-06-28 03:48:46,415 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 54 changer transitions 0/269 dead transitions. [2024-06-28 03:48:46,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 269 transitions, 3005 flow [2024-06-28 03:48:46,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:48:46,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:48:46,416 INFO L175 Difference]: Start difference. First operand has 305 places, 248 transitions, 2133 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:48:46,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 269 transitions, 3005 flow [2024-06-28 03:48:46,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 269 transitions, 2871 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:48:46,884 INFO L231 Difference]: Finished difference. Result has 307 places, 250 transitions, 2185 flow [2024-06-28 03:48:46,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2185, PETRI_PLACES=307, PETRI_TRANSITIONS=250} [2024-06-28 03:48:46,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 03:48:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 250 transitions, 2185 flow [2024-06-28 03:48:46,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:46,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:46,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:48:46,885 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:46,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2109247866, now seen corresponding path program 13 times [2024-06-28 03:48:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:46,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26763194] [2024-06-28 03:48:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26763194] [2024-06-28 03:48:48,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26763194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:48,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:48,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100258959] [2024-06-28 03:48:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:48,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:48,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:48,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 250 transitions, 2185 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:48,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:48,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:48,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:49,595 INFO L124 PetriNetUnfolderBase]: 716/1327 cut-off events. [2024-06-28 03:48:49,595 INFO L125 PetriNetUnfolderBase]: For 214296/214296 co-relation queries the response was YES. [2024-06-28 03:48:49,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8278 conditions, 1327 events. 716/1327 cut-off events. For 214296/214296 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7417 event pairs, 109 based on Foata normal form. 10/1335 useless extension candidates. Maximal degree in co-relation 8136. Up to 1115 conditions per place. [2024-06-28 03:48:49,609 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 50 changer transitions 11/274 dead transitions. [2024-06-28 03:48:49,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 274 transitions, 2827 flow [2024-06-28 03:48:49,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:48:49,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 03:48:49,610 INFO L175 Difference]: Start difference. First operand has 307 places, 250 transitions, 2185 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:48:49,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 274 transitions, 2827 flow [2024-06-28 03:48:50,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 274 transitions, 2717 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:48:50,123 INFO L231 Difference]: Finished difference. Result has 312 places, 247 transitions, 2158 flow [2024-06-28 03:48:50,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2158, PETRI_PLACES=312, PETRI_TRANSITIONS=247} [2024-06-28 03:48:50,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 03:48:50,123 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 247 transitions, 2158 flow [2024-06-28 03:48:50,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:50,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:50,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:50,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:48:50,124 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:50,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 383701610, now seen corresponding path program 7 times [2024-06-28 03:48:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:50,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053927126] [2024-06-28 03:48:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:51,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:51,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053927126] [2024-06-28 03:48:51,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053927126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:51,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:51,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:51,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892018120] [2024-06-28 03:48:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:51,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:51,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:51,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:51,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 247 transitions, 2158 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:51,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:51,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:51,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:52,352 INFO L124 PetriNetUnfolderBase]: 694/1285 cut-off events. [2024-06-28 03:48:52,352 INFO L125 PetriNetUnfolderBase]: For 170855/170855 co-relation queries the response was YES. [2024-06-28 03:48:52,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8170 conditions, 1285 events. 694/1285 cut-off events. For 170855/170855 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7093 event pairs, 113 based on Foata normal form. 2/1285 useless extension candidates. Maximal degree in co-relation 8026. Up to 1117 conditions per place. [2024-06-28 03:48:52,365 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 215 selfloop transitions, 50 changer transitions 0/267 dead transitions. [2024-06-28 03:48:52,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 267 transitions, 2772 flow [2024-06-28 03:48:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:48:52,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:48:52,366 INFO L175 Difference]: Start difference. First operand has 312 places, 247 transitions, 2158 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:48:52,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 267 transitions, 2772 flow [2024-06-28 03:48:52,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 267 transitions, 2668 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:48:52,851 INFO L231 Difference]: Finished difference. Result has 309 places, 248 transitions, 2190 flow [2024-06-28 03:48:52,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2190, PETRI_PLACES=309, PETRI_TRANSITIONS=248} [2024-06-28 03:48:52,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 03:48:52,851 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 248 transitions, 2190 flow [2024-06-28 03:48:52,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:52,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:52,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:52,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:48:52,852 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:52,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1957935912, now seen corresponding path program 8 times [2024-06-28 03:48:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:52,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151159321] [2024-06-28 03:48:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:52,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151159321] [2024-06-28 03:48:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151159321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:54,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:54,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:54,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025917520] [2024-06-28 03:48:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:54,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:54,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:54,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:54,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 248 transitions, 2190 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:54,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:54,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:54,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:54,735 INFO L124 PetriNetUnfolderBase]: 706/1313 cut-off events. [2024-06-28 03:48:54,735 INFO L125 PetriNetUnfolderBase]: For 200829/200829 co-relation queries the response was YES. [2024-06-28 03:48:54,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8303 conditions, 1313 events. 706/1313 cut-off events. For 200829/200829 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7308 event pairs, 123 based on Foata normal form. 8/1319 useless extension candidates. Maximal degree in co-relation 8160. Up to 1152 conditions per place. [2024-06-28 03:48:54,748 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 225 selfloop transitions, 32 changer transitions 13/272 dead transitions. [2024-06-28 03:48:54,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 272 transitions, 2875 flow [2024-06-28 03:48:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:48:54,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:48:54,749 INFO L175 Difference]: Start difference. First operand has 309 places, 248 transitions, 2190 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:48:54,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 272 transitions, 2875 flow [2024-06-28 03:48:55,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 272 transitions, 2724 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:55,272 INFO L231 Difference]: Finished difference. Result has 311 places, 246 transitions, 2092 flow [2024-06-28 03:48:55,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2092, PETRI_PLACES=311, PETRI_TRANSITIONS=246} [2024-06-28 03:48:55,272 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-28 03:48:55,272 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 246 transitions, 2092 flow [2024-06-28 03:48:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:55,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:55,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:55,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:48:55,273 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:55,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1957927542, now seen corresponding path program 9 times [2024-06-28 03:48:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:55,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341710158] [2024-06-28 03:48:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:55,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:56,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:56,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341710158] [2024-06-28 03:48:56,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341710158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:56,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:56,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:56,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843446965] [2024-06-28 03:48:56,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:56,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:56,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:56,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:56,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 246 transitions, 2092 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:56,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:56,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:56,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:57,012 INFO L124 PetriNetUnfolderBase]: 672/1243 cut-off events. [2024-06-28 03:48:57,013 INFO L125 PetriNetUnfolderBase]: For 170595/170595 co-relation queries the response was YES. [2024-06-28 03:48:57,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1243 events. 672/1243 cut-off events. For 170595/170595 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6786 event pairs, 108 based on Foata normal form. 2/1243 useless extension candidates. Maximal degree in co-relation 7792. Up to 1137 conditions per place. [2024-06-28 03:48:57,024 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 37 changer transitions 0/264 dead transitions. [2024-06-28 03:48:57,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 264 transitions, 2698 flow [2024-06-28 03:48:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:48:57,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:48:57,025 INFO L175 Difference]: Start difference. First operand has 311 places, 246 transitions, 2092 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:48:57,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 264 transitions, 2698 flow [2024-06-28 03:48:57,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 264 transitions, 2622 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:57,535 INFO L231 Difference]: Finished difference. Result has 310 places, 247 transitions, 2134 flow [2024-06-28 03:48:57,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2134, PETRI_PLACES=310, PETRI_TRANSITIONS=247} [2024-06-28 03:48:57,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-28 03:48:57,535 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 247 transitions, 2134 flow [2024-06-28 03:48:57,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:57,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:57,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:57,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:48:57,536 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:57,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2100856024, now seen corresponding path program 10 times [2024-06-28 03:48:57,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:57,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877324048] [2024-06-28 03:48:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:57,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:58,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:58,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877324048] [2024-06-28 03:48:58,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877324048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:58,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33569084] [2024-06-28 03:48:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:58,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:58,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:58,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:58,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:48:58,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 247 transitions, 2134 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:58,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:58,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:48:58,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:59,368 INFO L124 PetriNetUnfolderBase]: 692/1287 cut-off events. [2024-06-28 03:48:59,369 INFO L125 PetriNetUnfolderBase]: For 230563/230563 co-relation queries the response was YES. [2024-06-28 03:48:59,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 1287 events. 692/1287 cut-off events. For 230563/230563 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7160 event pairs, 113 based on Foata normal form. 12/1297 useless extension candidates. Maximal degree in co-relation 8032. Up to 1103 conditions per place. [2024-06-28 03:48:59,381 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 218 selfloop transitions, 43 changer transitions 7/270 dead transitions. [2024-06-28 03:48:59,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 270 transitions, 2802 flow [2024-06-28 03:48:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:48:59,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:48:59,381 INFO L175 Difference]: Start difference. First operand has 310 places, 247 transitions, 2134 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:48:59,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 270 transitions, 2802 flow [2024-06-28 03:48:59,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 270 transitions, 2694 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:48:59,936 INFO L231 Difference]: Finished difference. Result has 312 places, 245 transitions, 2140 flow [2024-06-28 03:48:59,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2140, PETRI_PLACES=312, PETRI_TRANSITIONS=245} [2024-06-28 03:48:59,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 03:48:59,936 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 245 transitions, 2140 flow [2024-06-28 03:48:59,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:59,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:59,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:59,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:48:59,936 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:59,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1957639242, now seen corresponding path program 11 times [2024-06-28 03:48:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639082962] [2024-06-28 03:48:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639082962] [2024-06-28 03:49:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639082962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506079884] [2024-06-28 03:49:01,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:01,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:01,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:01,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:01,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 245 transitions, 2140 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:01,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:01,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:01,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:01,944 INFO L124 PetriNetUnfolderBase]: 672/1247 cut-off events. [2024-06-28 03:49:01,944 INFO L125 PetriNetUnfolderBase]: For 174675/174675 co-relation queries the response was YES. [2024-06-28 03:49:01,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8073 conditions, 1247 events. 672/1247 cut-off events. For 174675/174675 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6875 event pairs, 111 based on Foata normal form. 2/1247 useless extension candidates. Maximal degree in co-relation 7928. Up to 1152 conditions per place. [2024-06-28 03:49:01,955 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 34 changer transitions 0/263 dead transitions. [2024-06-28 03:49:01,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 263 transitions, 2746 flow [2024-06-28 03:49:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:49:01,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:49:01,956 INFO L175 Difference]: Start difference. First operand has 312 places, 245 transitions, 2140 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:49:01,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 263 transitions, 2746 flow [2024-06-28 03:49:02,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 263 transitions, 2621 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 03:49:02,509 INFO L231 Difference]: Finished difference. Result has 313 places, 246 transitions, 2131 flow [2024-06-28 03:49:02,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2131, PETRI_PLACES=313, PETRI_TRANSITIONS=246} [2024-06-28 03:49:02,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 03:49:02,510 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 246 transitions, 2131 flow [2024-06-28 03:49:02,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:02,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:02,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:49:02,510 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:02,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash 383517036, now seen corresponding path program 14 times [2024-06-28 03:49:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:02,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190427753] [2024-06-28 03:49:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:04,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:04,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190427753] [2024-06-28 03:49:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190427753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:04,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:04,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060044313] [2024-06-28 03:49:04,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:04,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:04,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:04,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 246 transitions, 2131 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:04,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:04,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:04,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:04,908 INFO L124 PetriNetUnfolderBase]: 713/1334 cut-off events. [2024-06-28 03:49:04,909 INFO L125 PetriNetUnfolderBase]: For 275597/275597 co-relation queries the response was YES. [2024-06-28 03:49:04,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9456 conditions, 1334 events. 713/1334 cut-off events. For 275597/275597 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7517 event pairs, 120 based on Foata normal form. 8/1340 useless extension candidates. Maximal degree in co-relation 9310. Up to 1034 conditions per place. [2024-06-28 03:49:04,922 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 51 changer transitions 7/275 dead transitions. [2024-06-28 03:49:04,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 275 transitions, 3033 flow [2024-06-28 03:49:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:49:04,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-28 03:49:04,923 INFO L175 Difference]: Start difference. First operand has 313 places, 246 transitions, 2131 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:49:04,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 275 transitions, 3033 flow [2024-06-28 03:49:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 275 transitions, 2927 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:49:05,648 INFO L231 Difference]: Finished difference. Result has 316 places, 244 transitions, 2118 flow [2024-06-28 03:49:05,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2118, PETRI_PLACES=316, PETRI_TRANSITIONS=244} [2024-06-28 03:49:05,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 03:49:05,648 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 244 transitions, 2118 flow [2024-06-28 03:49:05,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:05,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:05,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:05,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:49:05,649 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:05,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2100849080, now seen corresponding path program 15 times [2024-06-28 03:49:05,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:05,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269386596] [2024-06-28 03:49:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:05,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:07,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:07,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269386596] [2024-06-28 03:49:07,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269386596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:07,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:07,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:07,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391163172] [2024-06-28 03:49:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:07,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:07,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:07,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:07,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 244 transitions, 2118 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:07,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:07,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:07,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:07,958 INFO L124 PetriNetUnfolderBase]: 711/1332 cut-off events. [2024-06-28 03:49:07,958 INFO L125 PetriNetUnfolderBase]: For 292668/292668 co-relation queries the response was YES. [2024-06-28 03:49:07,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9465 conditions, 1332 events. 711/1332 cut-off events. For 292668/292668 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7498 event pairs, 134 based on Foata normal form. 10/1340 useless extension candidates. Maximal degree in co-relation 9318. Up to 1154 conditions per place. [2024-06-28 03:49:07,972 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 40 changer transitions 9/268 dead transitions. [2024-06-28 03:49:07,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 268 transitions, 2748 flow [2024-06-28 03:49:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:49:07,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 03:49:07,973 INFO L175 Difference]: Start difference. First operand has 316 places, 244 transitions, 2118 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:49:07,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 268 transitions, 2748 flow [2024-06-28 03:49:08,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 268 transitions, 2652 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:49:08,669 INFO L231 Difference]: Finished difference. Result has 316 places, 241 transitions, 2088 flow [2024-06-28 03:49:08,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2088, PETRI_PLACES=316, PETRI_TRANSITIONS=241} [2024-06-28 03:49:08,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 03:49:08,669 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 241 transitions, 2088 flow [2024-06-28 03:49:08,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:08,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:08,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:49:08,670 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:08,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2100671450, now seen corresponding path program 16 times [2024-06-28 03:49:08,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:08,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111807128] [2024-06-28 03:49:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:08,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:10,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:10,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111807128] [2024-06-28 03:49:10,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111807128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:10,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:10,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896561341] [2024-06-28 03:49:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:10,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:10,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 241 transitions, 2088 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:10,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:10,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:10,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:10,923 INFO L124 PetriNetUnfolderBase]: 726/1369 cut-off events. [2024-06-28 03:49:10,923 INFO L125 PetriNetUnfolderBase]: For 336189/336189 co-relation queries the response was YES. [2024-06-28 03:49:10,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10668 conditions, 1369 events. 726/1369 cut-off events. For 336189/336189 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7789 event pairs, 143 based on Foata normal form. 8/1375 useless extension candidates. Maximal degree in co-relation 10522. Up to 1144 conditions per place. [2024-06-28 03:49:10,939 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 38 changer transitions 8/269 dead transitions. [2024-06-28 03:49:10,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 269 transitions, 2974 flow [2024-06-28 03:49:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:49:10,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 03:49:10,944 INFO L175 Difference]: Start difference. First operand has 316 places, 241 transitions, 2088 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:49:10,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 269 transitions, 2974 flow [2024-06-28 03:49:11,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 269 transitions, 2884 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:11,753 INFO L231 Difference]: Finished difference. Result has 314 places, 238 transitions, 2060 flow [2024-06-28 03:49:11,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2060, PETRI_PLACES=314, PETRI_TRANSITIONS=238} [2024-06-28 03:49:11,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 03:49:11,754 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 238 transitions, 2060 flow [2024-06-28 03:49:11,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:11,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:11,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:11,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:49:11,754 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:11,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2107342774, now seen corresponding path program 12 times [2024-06-28 03:49:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:11,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387508624] [2024-06-28 03:49:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:11,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387508624] [2024-06-28 03:49:13,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387508624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:13,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684039953] [2024-06-28 03:49:13,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:13,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:13,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:13,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:13,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:13,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 238 transitions, 2060 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:13,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:13,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:13,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:13,933 INFO L124 PetriNetUnfolderBase]: 737/1386 cut-off events. [2024-06-28 03:49:13,934 INFO L125 PetriNetUnfolderBase]: For 295615/295615 co-relation queries the response was YES. [2024-06-28 03:49:13,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10805 conditions, 1386 events. 737/1386 cut-off events. For 295615/295615 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7896 event pairs, 171 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 10660. Up to 1285 conditions per place. [2024-06-28 03:49:13,948 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 232 selfloop transitions, 33 changer transitions 0/267 dead transitions. [2024-06-28 03:49:13,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 267 transitions, 2790 flow [2024-06-28 03:49:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 03:49:13,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:49:13,949 INFO L175 Difference]: Start difference. First operand has 314 places, 238 transitions, 2060 flow. Second operand 12 states and 135 transitions. [2024-06-28 03:49:13,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 267 transitions, 2790 flow [2024-06-28 03:49:14,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 267 transitions, 2696 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:14,768 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 2218 flow [2024-06-28 03:49:14,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2218, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2024-06-28 03:49:14,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 03:49:14,768 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 2218 flow [2024-06-28 03:49:14,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:14,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:14,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:14,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:49:14,769 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:14,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2107105190, now seen corresponding path program 17 times [2024-06-28 03:49:14,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:14,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246010063] [2024-06-28 03:49:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:14,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246010063] [2024-06-28 03:49:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246010063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:16,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:16,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:16,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348163144] [2024-06-28 03:49:16,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:16,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:16,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:16,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:16,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:16,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:16,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 2218 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:16,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:16,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:16,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:17,317 INFO L124 PetriNetUnfolderBase]: 724/1363 cut-off events. [2024-06-28 03:49:17,317 INFO L125 PetriNetUnfolderBase]: For 278276/278276 co-relation queries the response was YES. [2024-06-28 03:49:17,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9619 conditions, 1363 events. 724/1363 cut-off events. For 278276/278276 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7750 event pairs, 136 based on Foata normal form. 10/1371 useless extension candidates. Maximal degree in co-relation 9472. Up to 1160 conditions per place. [2024-06-28 03:49:17,331 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 43 changer transitions 14/273 dead transitions. [2024-06-28 03:49:17,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 273 transitions, 2858 flow [2024-06-28 03:49:17,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:49:17,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:49:17,332 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 2218 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:49:17,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 273 transitions, 2858 flow [2024-06-28 03:49:18,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 273 transitions, 2768 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:49:18,038 INFO L231 Difference]: Finished difference. Result has 320 places, 243 transitions, 2162 flow [2024-06-28 03:49:18,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2162, PETRI_PLACES=320, PETRI_TRANSITIONS=243} [2024-06-28 03:49:18,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-28 03:49:18,039 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 243 transitions, 2162 flow [2024-06-28 03:49:18,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:18,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:18,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:18,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:49:18,039 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:18,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2107351144, now seen corresponding path program 13 times [2024-06-28 03:49:18,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:18,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863333574] [2024-06-28 03:49:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:18,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863333574] [2024-06-28 03:49:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863333574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812575249] [2024-06-28 03:49:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:19,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:19,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:19,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 243 transitions, 2162 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:19,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:19,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:19,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:19,956 INFO L124 PetriNetUnfolderBase]: 699/1320 cut-off events. [2024-06-28 03:49:19,956 INFO L125 PetriNetUnfolderBase]: For 248906/248906 co-relation queries the response was YES. [2024-06-28 03:49:19,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 1320 events. 699/1320 cut-off events. For 248906/248906 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7470 event pairs, 135 based on Foata normal form. 2/1320 useless extension candidates. Maximal degree in co-relation 9656. Up to 1142 conditions per place. [2024-06-28 03:49:19,969 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 46 changer transitions 0/264 dead transitions. [2024-06-28 03:49:19,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 264 transitions, 3050 flow [2024-06-28 03:49:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:49:19,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:49:19,970 INFO L175 Difference]: Start difference. First operand has 320 places, 243 transitions, 2162 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:49:19,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 264 transitions, 3050 flow [2024-06-28 03:49:20,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 264 transitions, 2956 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:20,591 INFO L231 Difference]: Finished difference. Result has 316 places, 245 transitions, 2262 flow [2024-06-28 03:49:20,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2262, PETRI_PLACES=316, PETRI_TRANSITIONS=245} [2024-06-28 03:49:20,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 03:49:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 245 transitions, 2262 flow [2024-06-28 03:49:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:20,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:20,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:49:20,591 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:20,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash 383521686, now seen corresponding path program 18 times [2024-06-28 03:49:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447953850] [2024-06-28 03:49:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447953850] [2024-06-28 03:49:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447953850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:22,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:22,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471003310] [2024-06-28 03:49:22,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:22,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:22,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:22,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:22,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:22,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 245 transitions, 2262 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:22,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:22,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:22,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:22,766 INFO L124 PetriNetUnfolderBase]: 715/1356 cut-off events. [2024-06-28 03:49:22,766 INFO L125 PetriNetUnfolderBase]: For 291897/291897 co-relation queries the response was YES. [2024-06-28 03:49:22,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9929 conditions, 1356 events. 715/1356 cut-off events. For 291897/291897 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7794 event pairs, 131 based on Foata normal form. 10/1364 useless extension candidates. Maximal degree in co-relation 9782. Up to 1100 conditions per place. [2024-06-28 03:49:22,780 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 55 changer transitions 12/270 dead transitions. [2024-06-28 03:49:22,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 270 transitions, 2900 flow [2024-06-28 03:49:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 03:49:22,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 03:49:22,781 INFO L175 Difference]: Start difference. First operand has 316 places, 245 transitions, 2262 flow. Second operand 12 states and 152 transitions. [2024-06-28 03:49:22,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 270 transitions, 2900 flow [2024-06-28 03:49:23,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 270 transitions, 2788 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:49:23,437 INFO L231 Difference]: Finished difference. Result has 321 places, 241 transitions, 2232 flow [2024-06-28 03:49:23,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2232, PETRI_PLACES=321, PETRI_TRANSITIONS=241} [2024-06-28 03:49:23,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 03:49:23,437 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 241 transitions, 2232 flow [2024-06-28 03:49:23,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:23,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:23,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:23,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:49:23,437 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:23,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash 463755532, now seen corresponding path program 19 times [2024-06-28 03:49:23,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:23,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808078303] [2024-06-28 03:49:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:24,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808078303] [2024-06-28 03:49:24,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808078303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:24,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:24,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298055378] [2024-06-28 03:49:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:25,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:25,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 241 transitions, 2232 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:25,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:25,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:25,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:25,761 INFO L124 PetriNetUnfolderBase]: 692/1315 cut-off events. [2024-06-28 03:49:25,761 INFO L125 PetriNetUnfolderBase]: For 271044/271044 co-relation queries the response was YES. [2024-06-28 03:49:25,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9307 conditions, 1315 events. 692/1315 cut-off events. For 271044/271044 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7492 event pairs, 127 based on Foata normal form. 10/1323 useless extension candidates. Maximal degree in co-relation 9158. Up to 1058 conditions per place. [2024-06-28 03:49:25,774 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 52 changer transitions 11/266 dead transitions. [2024-06-28 03:49:25,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 266 transitions, 2862 flow [2024-06-28 03:49:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:25,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:49:25,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:49:25,775 INFO L175 Difference]: Start difference. First operand has 321 places, 241 transitions, 2232 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:49:25,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 266 transitions, 2862 flow [2024-06-28 03:49:26,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 266 transitions, 2744 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:26,212 INFO L231 Difference]: Finished difference. Result has 318 places, 238 transitions, 2200 flow [2024-06-28 03:49:26,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2200, PETRI_PLACES=318, PETRI_TRANSITIONS=238} [2024-06-28 03:49:26,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-28 03:49:26,213 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 238 transitions, 2200 flow [2024-06-28 03:49:26,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:26,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:26,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:26,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:49:26,213 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:26,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2013236484, now seen corresponding path program 14 times [2024-06-28 03:49:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:26,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127281408] [2024-06-28 03:49:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:26,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:27,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127281408] [2024-06-28 03:49:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127281408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:27,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:27,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627536371] [2024-06-28 03:49:27,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:27,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:27,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:27,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 238 transitions, 2200 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:27,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:27,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:27,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:28,125 INFO L124 PetriNetUnfolderBase]: 679/1296 cut-off events. [2024-06-28 03:49:28,125 INFO L125 PetriNetUnfolderBase]: For 270980/270980 co-relation queries the response was YES. [2024-06-28 03:49:28,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 1296 events. 679/1296 cut-off events. For 270980/270980 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7390 event pairs, 120 based on Foata normal form. 12/1306 useless extension candidates. Maximal degree in co-relation 8816. Up to 1041 conditions per place. [2024-06-28 03:49:28,138 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 55 changer transitions 8/261 dead transitions. [2024-06-28 03:49:28,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 261 transitions, 2814 flow [2024-06-28 03:49:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:49:28,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 03:49:28,140 INFO L175 Difference]: Start difference. First operand has 318 places, 238 transitions, 2200 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:49:28,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 261 transitions, 2814 flow [2024-06-28 03:49:28,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 261 transitions, 2682 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:28,601 INFO L231 Difference]: Finished difference. Result has 315 places, 234 transitions, 2158 flow [2024-06-28 03:49:28,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2158, PETRI_PLACES=315, PETRI_TRANSITIONS=234} [2024-06-28 03:49:28,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 03:49:28,601 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 234 transitions, 2158 flow [2024-06-28 03:49:28,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:28,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:28,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:49:28,602 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:28,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2013229540, now seen corresponding path program 20 times [2024-06-28 03:49:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:28,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957103700] [2024-06-28 03:49:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:28,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957103700] [2024-06-28 03:49:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957103700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:30,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:30,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:30,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060345016] [2024-06-28 03:49:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:30,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:30,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:30,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 234 transitions, 2158 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:30,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:30,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:30,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:30,929 INFO L124 PetriNetUnfolderBase]: 669/1282 cut-off events. [2024-06-28 03:49:30,929 INFO L125 PetriNetUnfolderBase]: For 253511/253511 co-relation queries the response was YES. [2024-06-28 03:49:30,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8850 conditions, 1282 events. 669/1282 cut-off events. For 253511/253511 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7305 event pairs, 122 based on Foata normal form. 10/1290 useless extension candidates. Maximal degree in co-relation 8702. Up to 1035 conditions per place. [2024-06-28 03:49:30,942 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 195 selfloop transitions, 52 changer transitions 9/258 dead transitions. [2024-06-28 03:49:30,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 258 transitions, 2768 flow [2024-06-28 03:49:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:49:30,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 03:49:30,943 INFO L175 Difference]: Start difference. First operand has 315 places, 234 transitions, 2158 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:49:30,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 258 transitions, 2768 flow [2024-06-28 03:49:31,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 258 transitions, 2614 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:31,360 INFO L231 Difference]: Finished difference. Result has 315 places, 231 transitions, 2095 flow [2024-06-28 03:49:31,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2095, PETRI_PLACES=315, PETRI_TRANSITIONS=231} [2024-06-28 03:49:31,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 03:49:31,361 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 231 transitions, 2095 flow [2024-06-28 03:49:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:31,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:31,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:31,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:49:31,361 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:31,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2008467940, now seen corresponding path program 21 times [2024-06-28 03:49:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781598838] [2024-06-28 03:49:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:31,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781598838] [2024-06-28 03:49:32,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781598838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:32,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:32,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015476723] [2024-06-28 03:49:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:32,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:32,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:32,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:32,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 231 transitions, 2095 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:32,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:32,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:32,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:33,238 INFO L124 PetriNetUnfolderBase]: 677/1306 cut-off events. [2024-06-28 03:49:33,238 INFO L125 PetriNetUnfolderBase]: For 293381/293381 co-relation queries the response was YES. [2024-06-28 03:49:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9752 conditions, 1306 events. 677/1306 cut-off events. For 293381/293381 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7482 event pairs, 132 based on Foata normal form. 8/1312 useless extension candidates. Maximal degree in co-relation 9604. Up to 988 conditions per place. [2024-06-28 03:49:33,252 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 191 selfloop transitions, 55 changer transitions 10/258 dead transitions. [2024-06-28 03:49:33,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 258 transitions, 2943 flow [2024-06-28 03:49:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:49:33,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:49:33,253 INFO L175 Difference]: Start difference. First operand has 315 places, 231 transitions, 2095 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:49:33,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 258 transitions, 2943 flow [2024-06-28 03:49:34,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 258 transitions, 2829 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:34,093 INFO L231 Difference]: Finished difference. Result has 313 places, 228 transitions, 2081 flow [2024-06-28 03:49:34,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2081, PETRI_PLACES=313, PETRI_TRANSITIONS=228} [2024-06-28 03:49:34,094 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 03:49:34,094 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 228 transitions, 2081 flow [2024-06-28 03:49:34,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:34,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:34,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:34,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:49:34,094 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:34,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2013051910, now seen corresponding path program 22 times [2024-06-28 03:49:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:34,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287569155] [2024-06-28 03:49:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:34,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:35,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:35,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287569155] [2024-06-28 03:49:35,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287569155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:35,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:35,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:35,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409537447] [2024-06-28 03:49:35,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:35,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:35,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:35,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:35,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 228 transitions, 2081 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:35,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:35,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:35,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:36,124 INFO L124 PetriNetUnfolderBase]: 667/1288 cut-off events. [2024-06-28 03:49:36,124 INFO L125 PetriNetUnfolderBase]: For 288159/288159 co-relation queries the response was YES. [2024-06-28 03:49:36,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9659 conditions, 1288 events. 667/1288 cut-off events. For 288159/288159 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7384 event pairs, 132 based on Foata normal form. 8/1294 useless extension candidates. Maximal degree in co-relation 9512. Up to 1050 conditions per place. [2024-06-28 03:49:36,136 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 53 changer transitions 11/251 dead transitions. [2024-06-28 03:49:36,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 251 transitions, 2663 flow [2024-06-28 03:49:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:49:36,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 03:49:36,137 INFO L175 Difference]: Start difference. First operand has 313 places, 228 transitions, 2081 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:49:36,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 251 transitions, 2663 flow [2024-06-28 03:49:36,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 251 transitions, 2549 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:36,780 INFO L231 Difference]: Finished difference. Result has 310 places, 225 transitions, 2055 flow [2024-06-28 03:49:36,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2055, PETRI_PLACES=310, PETRI_TRANSITIONS=225} [2024-06-28 03:49:36,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-28 03:49:36,781 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 225 transitions, 2055 flow [2024-06-28 03:49:36,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:36,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:36,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:36,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:49:36,781 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:36,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash 212814606, now seen corresponding path program 23 times [2024-06-28 03:49:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:36,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401323477] [2024-06-28 03:49:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:36,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:38,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:38,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401323477] [2024-06-28 03:49:38,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401323477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:38,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:38,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:38,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643867928] [2024-06-28 03:49:38,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:38,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:38,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:38,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:38,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:38,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 225 transitions, 2055 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:38,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:38,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:38,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:39,086 INFO L124 PetriNetUnfolderBase]: 638/1229 cut-off events. [2024-06-28 03:49:39,086 INFO L125 PetriNetUnfolderBase]: For 232575/232575 co-relation queries the response was YES. [2024-06-28 03:49:39,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1229 events. 638/1229 cut-off events. For 232575/232575 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6935 event pairs, 116 based on Foata normal form. 8/1235 useless extension candidates. Maximal degree in co-relation 8358. Up to 1003 conditions per place. [2024-06-28 03:49:39,098 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 187 selfloop transitions, 45 changer transitions 13/247 dead transitions. [2024-06-28 03:49:39,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 247 transitions, 2625 flow [2024-06-28 03:49:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:49:39,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:49:39,099 INFO L175 Difference]: Start difference. First operand has 310 places, 225 transitions, 2055 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:49:39,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 247 transitions, 2625 flow [2024-06-28 03:49:39,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 247 transitions, 2515 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:49:39,872 INFO L231 Difference]: Finished difference. Result has 307 places, 221 transitions, 2012 flow [2024-06-28 03:49:39,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2012, PETRI_PLACES=307, PETRI_TRANSITIONS=221} [2024-06-28 03:49:39,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 03:49:39,873 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 221 transitions, 2012 flow [2024-06-28 03:49:39,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:39,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:39,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:39,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:49:39,873 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:39,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1112075384, now seen corresponding path program 15 times [2024-06-28 03:49:39,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:39,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990148243] [2024-06-28 03:49:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:41,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:41,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990148243] [2024-06-28 03:49:41,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990148243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:41,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:41,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187812548] [2024-06-28 03:49:41,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:41,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:41,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:41,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:41,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:41,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 221 transitions, 2012 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:41,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:41,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:41,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:41,912 INFO L124 PetriNetUnfolderBase]: 622/1193 cut-off events. [2024-06-28 03:49:41,913 INFO L125 PetriNetUnfolderBase]: For 196384/196384 co-relation queries the response was YES. [2024-06-28 03:49:41,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8396 conditions, 1193 events. 622/1193 cut-off events. For 196384/196384 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6673 event pairs, 138 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 8252. Up to 1109 conditions per place. [2024-06-28 03:49:41,924 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 207 selfloop transitions, 29 changer transitions 0/238 dead transitions. [2024-06-28 03:49:41,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 238 transitions, 2574 flow [2024-06-28 03:49:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:49:41,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:49:41,925 INFO L175 Difference]: Start difference. First operand has 307 places, 221 transitions, 2012 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:49:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 238 transitions, 2574 flow [2024-06-28 03:49:42,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 238 transitions, 2480 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:49:42,625 INFO L231 Difference]: Finished difference. Result has 301 places, 222 transitions, 2028 flow [2024-06-28 03:49:42,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2028, PETRI_PLACES=301, PETRI_TRANSITIONS=222} [2024-06-28 03:49:42,625 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 03:49:42,625 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 222 transitions, 2028 flow [2024-06-28 03:49:42,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:42,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:42,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:42,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:49:42,626 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:42,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:42,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1015192826, now seen corresponding path program 24 times [2024-06-28 03:49:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562749971] [2024-06-28 03:49:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:44,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:44,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562749971] [2024-06-28 03:49:44,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562749971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:44,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:44,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:44,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087187463] [2024-06-28 03:49:44,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:44,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:44,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:44,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:44,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:44,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 222 transitions, 2028 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:44,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:44,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:44,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:45,050 INFO L124 PetriNetUnfolderBase]: 638/1229 cut-off events. [2024-06-28 03:49:45,050 INFO L125 PetriNetUnfolderBase]: For 235731/235731 co-relation queries the response was YES. [2024-06-28 03:49:45,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 1229 events. 638/1229 cut-off events. For 235731/235731 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6941 event pairs, 140 based on Foata normal form. 10/1237 useless extension candidates. Maximal degree in co-relation 8338. Up to 1064 conditions per place. [2024-06-28 03:49:45,062 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 29 changer transitions 12/244 dead transitions. [2024-06-28 03:49:45,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 244 transitions, 2604 flow [2024-06-28 03:49:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:49:45,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:49:45,062 INFO L175 Difference]: Start difference. First operand has 301 places, 222 transitions, 2028 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:49:45,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 244 transitions, 2604 flow [2024-06-28 03:49:45,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 244 transitions, 2504 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:49:45,848 INFO L231 Difference]: Finished difference. Result has 304 places, 216 transitions, 1953 flow [2024-06-28 03:49:45,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1953, PETRI_PLACES=304, PETRI_TRANSITIONS=216} [2024-06-28 03:49:45,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-28 03:49:45,848 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 216 transitions, 1953 flow [2024-06-28 03:49:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:45,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:45,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:45,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:49:45,849 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:45,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash -200634500, now seen corresponding path program 25 times [2024-06-28 03:49:45,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:45,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388799130] [2024-06-28 03:49:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:47,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:47,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388799130] [2024-06-28 03:49:47,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388799130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:47,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:47,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:47,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147877206] [2024-06-28 03:49:47,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:47,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:47,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:47,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:47,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:47,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 216 transitions, 1953 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:47,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:47,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:47,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:48,283 INFO L124 PetriNetUnfolderBase]: 645/1254 cut-off events. [2024-06-28 03:49:48,283 INFO L125 PetriNetUnfolderBase]: For 283538/283538 co-relation queries the response was YES. [2024-06-28 03:49:48,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 1254 events. 645/1254 cut-off events. For 283538/283538 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7120 event pairs, 147 based on Foata normal form. 8/1260 useless extension candidates. Maximal degree in co-relation 9442. Up to 1022 conditions per place. [2024-06-28 03:49:48,296 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 27 changer transitions 8/242 dead transitions. [2024-06-28 03:49:48,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 242 transitions, 2769 flow [2024-06-28 03:49:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:49:48,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:49:48,297 INFO L175 Difference]: Start difference. First operand has 304 places, 216 transitions, 1953 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:49:48,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 242 transitions, 2769 flow [2024-06-28 03:49:49,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 242 transitions, 2699 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:49:49,168 INFO L231 Difference]: Finished difference. Result has 301 places, 213 transitions, 1912 flow [2024-06-28 03:49:49,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1912, PETRI_PLACES=301, PETRI_TRANSITIONS=213} [2024-06-28 03:49:49,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 03:49:49,169 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 213 transitions, 1912 flow [2024-06-28 03:49:49,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:49,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:49,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:49,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:49:49,169 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:49,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1732070902, now seen corresponding path program 16 times [2024-06-28 03:49:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745737234] [2024-06-28 03:49:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:49,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745737234] [2024-06-28 03:49:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745737234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228176568] [2024-06-28 03:49:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:50,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:50,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:50,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 213 transitions, 1912 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:50,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:50,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:50,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:51,190 INFO L124 PetriNetUnfolderBase]: 610/1181 cut-off events. [2024-06-28 03:49:51,191 INFO L125 PetriNetUnfolderBase]: For 247349/247349 co-relation queries the response was YES. [2024-06-28 03:49:51,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 1181 events. 610/1181 cut-off events. For 247349/247349 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6586 event pairs, 149 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 9166. Up to 1097 conditions per place. [2024-06-28 03:49:51,204 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 202 selfloop transitions, 26 changer transitions 0/230 dead transitions. [2024-06-28 03:49:51,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 230 transitions, 2460 flow [2024-06-28 03:49:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:49:51,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:49:51,205 INFO L175 Difference]: Start difference. First operand has 301 places, 213 transitions, 1912 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:49:51,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 230 transitions, 2460 flow [2024-06-28 03:49:52,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 230 transitions, 2369 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:52,201 INFO L231 Difference]: Finished difference. Result has 297 places, 214 transitions, 1927 flow [2024-06-28 03:49:52,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1927, PETRI_PLACES=297, PETRI_TRANSITIONS=214} [2024-06-28 03:49:52,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 03:49:52,202 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 214 transitions, 1927 flow [2024-06-28 03:49:52,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:52,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:52,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:52,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:49:52,202 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:52,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1911117590, now seen corresponding path program 17 times [2024-06-28 03:49:52,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:52,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414340081] [2024-06-28 03:49:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:52,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:53,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414340081] [2024-06-28 03:49:53,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414340081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:53,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:53,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070356127] [2024-06-28 03:49:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:53,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:53,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:53,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:53,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 214 transitions, 1927 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:53,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:53,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:54,294 INFO L124 PetriNetUnfolderBase]: 614/1189 cut-off events. [2024-06-28 03:49:54,294 INFO L125 PetriNetUnfolderBase]: For 243646/243646 co-relation queries the response was YES. [2024-06-28 03:49:54,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9335 conditions, 1189 events. 614/1189 cut-off events. For 243646/243646 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6671 event pairs, 141 based on Foata normal form. 2/1189 useless extension candidates. Maximal degree in co-relation 9194. Up to 1030 conditions per place. [2024-06-28 03:49:54,306 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 45 changer transitions 0/230 dead transitions. [2024-06-28 03:49:54,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 230 transitions, 2473 flow [2024-06-28 03:49:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:49:54,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:49:54,307 INFO L175 Difference]: Start difference. First operand has 297 places, 214 transitions, 1927 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:49:54,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 230 transitions, 2473 flow [2024-06-28 03:49:55,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 230 transitions, 2377 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:49:55,112 INFO L231 Difference]: Finished difference. Result has 299 places, 215 transitions, 1977 flow [2024-06-28 03:49:55,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1977, PETRI_PLACES=299, PETRI_TRANSITIONS=215} [2024-06-28 03:49:55,112 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 03:49:55,112 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 215 transitions, 1977 flow [2024-06-28 03:49:55,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:55,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:55,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:55,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:49:55,113 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:55,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1569122120, now seen corresponding path program 18 times [2024-06-28 03:49:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:55,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183249234] [2024-06-28 03:49:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:56,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:56,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183249234] [2024-06-28 03:49:56,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183249234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:56,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:56,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:56,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753687426] [2024-06-28 03:49:56,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:56,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:56,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:56,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:56,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 215 transitions, 1977 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:56,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:56,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:56,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:57,145 INFO L124 PetriNetUnfolderBase]: 625/1210 cut-off events. [2024-06-28 03:49:57,145 INFO L125 PetriNetUnfolderBase]: For 261089/261089 co-relation queries the response was YES. [2024-06-28 03:49:57,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9850 conditions, 1210 events. 625/1210 cut-off events. For 261089/261089 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6842 event pairs, 142 based on Foata normal form. 2/1210 useless extension candidates. Maximal degree in co-relation 9708. Up to 1026 conditions per place. [2024-06-28 03:49:57,157 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 47 changer transitions 0/233 dead transitions. [2024-06-28 03:49:57,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 233 transitions, 2795 flow [2024-06-28 03:49:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:49:57,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:49:57,158 INFO L175 Difference]: Start difference. First operand has 299 places, 215 transitions, 1977 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:49:57,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 233 transitions, 2795 flow [2024-06-28 03:49:58,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 233 transitions, 2659 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 03:49:58,159 INFO L231 Difference]: Finished difference. Result has 301 places, 217 transitions, 2045 flow [2024-06-28 03:49:58,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2045, PETRI_PLACES=301, PETRI_TRANSITIONS=217} [2024-06-28 03:49:58,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 03:49:58,159 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 217 transitions, 2045 flow [2024-06-28 03:49:58,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:58,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:58,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:58,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:49:58,159 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:58,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash 35725434, now seen corresponding path program 19 times [2024-06-28 03:49:58,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:58,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482833636] [2024-06-28 03:49:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:58,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:59,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:59,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482833636] [2024-06-28 03:49:59,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482833636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:59,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:59,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:59,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78460860] [2024-06-28 03:49:59,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:59,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:59,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:49:59,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 217 transitions, 2045 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:59,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:59,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:49:59,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:00,218 INFO L124 PetriNetUnfolderBase]: 637/1238 cut-off events. [2024-06-28 03:50:00,218 INFO L125 PetriNetUnfolderBase]: For 296197/296197 co-relation queries the response was YES. [2024-06-28 03:50:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 1238 events. 637/1238 cut-off events. For 296197/296197 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7039 event pairs, 164 based on Foata normal form. 8/1244 useless extension candidates. Maximal degree in co-relation 9858. Up to 1156 conditions per place. [2024-06-28 03:50:00,230 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 206 selfloop transitions, 18 changer transitions 9/235 dead transitions. [2024-06-28 03:50:00,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 235 transitions, 2619 flow [2024-06-28 03:50:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:50:00,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:50:00,231 INFO L175 Difference]: Start difference. First operand has 301 places, 217 transitions, 2045 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:50:00,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 235 transitions, 2619 flow [2024-06-28 03:50:01,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 235 transitions, 2502 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:50:01,228 INFO L231 Difference]: Finished difference. Result has 305 places, 215 transitions, 1946 flow [2024-06-28 03:50:01,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1946, PETRI_PLACES=305, PETRI_TRANSITIONS=215} [2024-06-28 03:50:01,229 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 03:50:01,229 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 215 transitions, 1946 flow [2024-06-28 03:50:01,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:01,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:01,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:01,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:50:01,230 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:01,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:01,230 INFO L85 PathProgramCache]: Analyzing trace with hash 8429738, now seen corresponding path program 20 times [2024-06-28 03:50:01,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:01,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336872835] [2024-06-28 03:50:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:03,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:03,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336872835] [2024-06-28 03:50:03,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336872835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:03,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:03,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33902782] [2024-06-28 03:50:03,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:03,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:03,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:03,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 215 transitions, 1946 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:03,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:03,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:03,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:03,767 INFO L124 PetriNetUnfolderBase]: 639/1244 cut-off events. [2024-06-28 03:50:03,768 INFO L125 PetriNetUnfolderBase]: For 325991/325991 co-relation queries the response was YES. [2024-06-28 03:50:03,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9930 conditions, 1244 events. 639/1244 cut-off events. For 325991/325991 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7096 event pairs, 152 based on Foata normal form. 12/1254 useless extension candidates. Maximal degree in co-relation 9785. Up to 971 conditions per place. [2024-06-28 03:50:03,783 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 55 changer transitions 7/236 dead transitions. [2024-06-28 03:50:03,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 236 transitions, 2542 flow [2024-06-28 03:50:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:50:03,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:50:03,784 INFO L175 Difference]: Start difference. First operand has 305 places, 215 transitions, 1946 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:50:03,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 236 transitions, 2542 flow [2024-06-28 03:50:04,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 236 transitions, 2504 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:50:04,755 INFO L231 Difference]: Finished difference. Result has 305 places, 213 transitions, 2048 flow [2024-06-28 03:50:04,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2048, PETRI_PLACES=305, PETRI_TRANSITIONS=213} [2024-06-28 03:50:04,756 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 03:50:04,756 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 213 transitions, 2048 flow [2024-06-28 03:50:04,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:04,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:04,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:04,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:50:04,757 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:04,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1568876166, now seen corresponding path program 26 times [2024-06-28 03:50:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:04,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734254514] [2024-06-28 03:50:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:06,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:06,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734254514] [2024-06-28 03:50:06,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734254514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:06,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790950058] [2024-06-28 03:50:06,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:06,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:06,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:06,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:06,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 213 transitions, 2048 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:06,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:06,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:06,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:07,291 INFO L124 PetriNetUnfolderBase]: 634/1237 cut-off events. [2024-06-28 03:50:07,291 INFO L125 PetriNetUnfolderBase]: For 314563/314563 co-relation queries the response was YES. [2024-06-28 03:50:07,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10002 conditions, 1237 events. 634/1237 cut-off events. For 314563/314563 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7062 event pairs, 146 based on Foata normal form. 10/1245 useless extension candidates. Maximal degree in co-relation 9857. Up to 937 conditions per place. [2024-06-28 03:50:07,311 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 164 selfloop transitions, 63 changer transitions 9/238 dead transitions. [2024-06-28 03:50:07,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 238 transitions, 2623 flow [2024-06-28 03:50:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:50:07,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 03:50:07,313 INFO L175 Difference]: Start difference. First operand has 305 places, 213 transitions, 2048 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:50:07,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 238 transitions, 2623 flow [2024-06-28 03:50:08,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 238 transitions, 2473 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:08,168 INFO L231 Difference]: Finished difference. Result has 307 places, 212 transitions, 2054 flow [2024-06-28 03:50:08,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2054, PETRI_PLACES=307, PETRI_TRANSITIONS=212} [2024-06-28 03:50:08,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 03:50:08,169 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 212 transitions, 2054 flow [2024-06-28 03:50:08,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:08,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:08,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:08,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:50:08,169 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:08,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1431422442, now seen corresponding path program 27 times [2024-06-28 03:50:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775116761] [2024-06-28 03:50:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:08,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:09,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:09,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775116761] [2024-06-28 03:50:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775116761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:09,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:09,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:09,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957786575] [2024-06-28 03:50:09,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:09,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:09,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:09,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 212 transitions, 2054 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:09,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:09,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:09,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:10,322 INFO L124 PetriNetUnfolderBase]: 595/1164 cut-off events. [2024-06-28 03:50:10,322 INFO L125 PetriNetUnfolderBase]: For 256659/256659 co-relation queries the response was YES. [2024-06-28 03:50:10,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8665 conditions, 1164 events. 595/1164 cut-off events. For 256659/256659 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6582 event pairs, 139 based on Foata normal form. 10/1172 useless extension candidates. Maximal degree in co-relation 8519. Up to 1038 conditions per place. [2024-06-28 03:50:10,333 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 24 changer transitions 9/234 dead transitions. [2024-06-28 03:50:10,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 234 transitions, 2608 flow [2024-06-28 03:50:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 03:50:10,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:50:10,334 INFO L175 Difference]: Start difference. First operand has 307 places, 212 transitions, 2054 flow. Second operand 12 states and 138 transitions. [2024-06-28 03:50:10,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 234 transitions, 2608 flow [2024-06-28 03:50:11,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 234 transitions, 2507 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:50:11,077 INFO L231 Difference]: Finished difference. Result has 306 places, 209 transitions, 1981 flow [2024-06-28 03:50:11,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1981, PETRI_PLACES=306, PETRI_TRANSITIONS=209} [2024-06-28 03:50:11,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-28 03:50:11,078 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 209 transitions, 1981 flow [2024-06-28 03:50:11,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:11,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:11,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:11,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:50:11,078 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:11,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1140134330, now seen corresponding path program 28 times [2024-06-28 03:50:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779294314] [2024-06-28 03:50:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779294314] [2024-06-28 03:50:12,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779294314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:12,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:12,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:12,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040858260] [2024-06-28 03:50:12,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:12,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:12,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:12,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 209 transitions, 1981 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:12,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:12,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:12,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:13,267 INFO L124 PetriNetUnfolderBase]: 585/1150 cut-off events. [2024-06-28 03:50:13,267 INFO L125 PetriNetUnfolderBase]: For 251850/251850 co-relation queries the response was YES. [2024-06-28 03:50:13,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8478 conditions, 1150 events. 585/1150 cut-off events. For 251850/251850 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6511 event pairs, 137 based on Foata normal form. 10/1158 useless extension candidates. Maximal degree in co-relation 8333. Up to 899 conditions per place. [2024-06-28 03:50:13,279 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 48 changer transitions 9/231 dead transitions. [2024-06-28 03:50:13,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 231 transitions, 2529 flow [2024-06-28 03:50:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:50:13,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 03:50:13,280 INFO L175 Difference]: Start difference. First operand has 306 places, 209 transitions, 1981 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:50:13,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 231 transitions, 2529 flow [2024-06-28 03:50:14,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 231 transitions, 2475 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:50:14,045 INFO L231 Difference]: Finished difference. Result has 303 places, 206 transitions, 2009 flow [2024-06-28 03:50:14,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2009, PETRI_PLACES=303, PETRI_TRANSITIONS=206} [2024-06-28 03:50:14,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-28 03:50:14,045 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 206 transitions, 2009 flow [2024-06-28 03:50:14,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:14,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:14,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:14,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:50:14,045 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:14,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1201487878, now seen corresponding path program 21 times [2024-06-28 03:50:14,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:14,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312695555] [2024-06-28 03:50:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:14,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:15,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:15,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312695555] [2024-06-28 03:50:15,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312695555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:15,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:15,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946510397] [2024-06-28 03:50:15,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:15,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:15,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:15,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:15,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:15,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 206 transitions, 2009 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:15,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:15,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:15,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:15,879 INFO L124 PetriNetUnfolderBase]: 563/1108 cut-off events. [2024-06-28 03:50:15,879 INFO L125 PetriNetUnfolderBase]: For 205005/205005 co-relation queries the response was YES. [2024-06-28 03:50:15,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8427 conditions, 1108 events. 563/1108 cut-off events. For 205005/205005 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6241 event pairs, 133 based on Foata normal form. 2/1108 useless extension candidates. Maximal degree in co-relation 8283. Up to 1041 conditions per place. [2024-06-28 03:50:15,890 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 23 changer transitions 0/222 dead transitions. [2024-06-28 03:50:15,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 222 transitions, 2541 flow [2024-06-28 03:50:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:50:15,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:50:15,891 INFO L175 Difference]: Start difference. First operand has 303 places, 206 transitions, 2009 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:50:15,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 222 transitions, 2541 flow [2024-06-28 03:50:16,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 222 transitions, 2439 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:50:16,511 INFO L231 Difference]: Finished difference. Result has 300 places, 207 transitions, 2013 flow [2024-06-28 03:50:16,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2013, PETRI_PLACES=300, PETRI_TRANSITIONS=207} [2024-06-28 03:50:16,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-28 03:50:16,511 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 207 transitions, 2013 flow [2024-06-28 03:50:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:16,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:16,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:16,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:50:16,512 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:16,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash -778713852, now seen corresponding path program 22 times [2024-06-28 03:50:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244847840] [2024-06-28 03:50:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:17,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244847840] [2024-06-28 03:50:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244847840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:17,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:17,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618157366] [2024-06-28 03:50:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:17,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:17,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:18,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:18,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 207 transitions, 2013 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:18,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:18,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:18,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:18,505 INFO L124 PetriNetUnfolderBase]: 575/1136 cut-off events. [2024-06-28 03:50:18,505 INFO L125 PetriNetUnfolderBase]: For 231239/231239 co-relation queries the response was YES. [2024-06-28 03:50:18,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 1136 events. 575/1136 cut-off events. For 231239/231239 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6448 event pairs, 133 based on Foata normal form. 8/1142 useless extension candidates. Maximal degree in co-relation 8381. Up to 1045 conditions per place. [2024-06-28 03:50:18,516 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 19 changer transitions 12/225 dead transitions. [2024-06-28 03:50:18,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 225 transitions, 2565 flow [2024-06-28 03:50:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:50:18,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:50:18,517 INFO L175 Difference]: Start difference. First operand has 300 places, 207 transitions, 2013 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:50:18,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 225 transitions, 2565 flow [2024-06-28 03:50:19,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 225 transitions, 2469 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:50:19,210 INFO L231 Difference]: Finished difference. Result has 302 places, 204 transitions, 1939 flow [2024-06-28 03:50:19,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1939, PETRI_PLACES=302, PETRI_TRANSITIONS=204} [2024-06-28 03:50:19,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 03:50:19,210 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 204 transitions, 1939 flow [2024-06-28 03:50:19,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:19,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:19,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:50:19,210 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:19,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1431176488, now seen corresponding path program 23 times [2024-06-28 03:50:19,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:19,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456466745] [2024-06-28 03:50:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:19,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456466745] [2024-06-28 03:50:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456466745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:20,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:20,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818742770] [2024-06-28 03:50:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:20,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:20,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:20,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 204 transitions, 1939 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:20,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:20,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:20,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:21,159 INFO L124 PetriNetUnfolderBase]: 557/1098 cut-off events. [2024-06-28 03:50:21,159 INFO L125 PetriNetUnfolderBase]: For 205031/205031 co-relation queries the response was YES. [2024-06-28 03:50:21,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 1098 events. 557/1098 cut-off events. For 205031/205031 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6170 event pairs, 135 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 8185. Up to 1002 conditions per place. [2024-06-28 03:50:21,170 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 25 changer transitions 0/221 dead transitions. [2024-06-28 03:50:21,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 221 transitions, 2475 flow [2024-06-28 03:50:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:50:21,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:50:21,171 INFO L175 Difference]: Start difference. First operand has 302 places, 204 transitions, 1939 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:50:21,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 221 transitions, 2475 flow [2024-06-28 03:50:21,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 221 transitions, 2431 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:21,894 INFO L231 Difference]: Finished difference. Result has 298 places, 205 transitions, 2007 flow [2024-06-28 03:50:21,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2007, PETRI_PLACES=298, PETRI_TRANSITIONS=205} [2024-06-28 03:50:21,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 03:50:21,895 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 205 transitions, 2007 flow [2024-06-28 03:50:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:21,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:21,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:21,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:50:21,895 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1562442426, now seen corresponding path program 29 times [2024-06-28 03:50:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:21,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605098569] [2024-06-28 03:50:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:23,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:23,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605098569] [2024-06-28 03:50:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605098569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:23,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:23,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:23,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296653898] [2024-06-28 03:50:23,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:23,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:23,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 205 transitions, 2007 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:23,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:23,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:23,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:23,879 INFO L124 PetriNetUnfolderBase]: 584/1159 cut-off events. [2024-06-28 03:50:23,879 INFO L125 PetriNetUnfolderBase]: For 260587/260587 co-relation queries the response was YES. [2024-06-28 03:50:23,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9107 conditions, 1159 events. 584/1159 cut-off events. For 260587/260587 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6607 event pairs, 142 based on Foata normal form. 8/1165 useless extension candidates. Maximal degree in co-relation 8965. Up to 920 conditions per place. [2024-06-28 03:50:23,890 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 36 changer transitions 9/228 dead transitions. [2024-06-28 03:50:23,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 228 transitions, 2755 flow [2024-06-28 03:50:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:50:23,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:50:23,891 INFO L175 Difference]: Start difference. First operand has 298 places, 205 transitions, 2007 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:50:23,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 228 transitions, 2755 flow [2024-06-28 03:50:24,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 228 transitions, 2653 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:50:24,762 INFO L231 Difference]: Finished difference. Result has 301 places, 202 transitions, 1957 flow [2024-06-28 03:50:24,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1957, PETRI_PLACES=301, PETRI_TRANSITIONS=202} [2024-06-28 03:50:24,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 03:50:24,762 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 202 transitions, 1957 flow [2024-06-28 03:50:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:24,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:24,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:50:24,763 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:24,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1396393220, now seen corresponding path program 24 times [2024-06-28 03:50:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269191871] [2024-06-28 03:50:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:26,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269191871] [2024-06-28 03:50:26,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269191871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:26,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:26,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080275151] [2024-06-28 03:50:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:26,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:26,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:26,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:26,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:26,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 202 transitions, 1957 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:26,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:26,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:26,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:26,647 INFO L124 PetriNetUnfolderBase]: 562/1113 cut-off events. [2024-06-28 03:50:26,647 INFO L125 PetriNetUnfolderBase]: For 221539/221539 co-relation queries the response was YES. [2024-06-28 03:50:26,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8656 conditions, 1113 events. 562/1113 cut-off events. For 221539/221539 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6249 event pairs, 137 based on Foata normal form. 2/1113 useless extension candidates. Maximal degree in co-relation 8513. Up to 962 conditions per place. [2024-06-28 03:50:26,656 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 42 changer transitions 0/217 dead transitions. [2024-06-28 03:50:26,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 217 transitions, 2427 flow [2024-06-28 03:50:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:50:26,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:50:26,657 INFO L175 Difference]: Start difference. First operand has 301 places, 202 transitions, 1957 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:50:26,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 217 transitions, 2427 flow [2024-06-28 03:50:27,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 217 transitions, 2315 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:27,392 INFO L231 Difference]: Finished difference. Result has 298 places, 202 transitions, 1933 flow [2024-06-28 03:50:27,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1933, PETRI_PLACES=298, PETRI_TRANSITIONS=202} [2024-06-28 03:50:27,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 03:50:27,393 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 202 transitions, 1933 flow [2024-06-28 03:50:27,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:27,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:27,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:27,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:50:27,393 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:27,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1391744646, now seen corresponding path program 30 times [2024-06-28 03:50:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534677954] [2024-06-28 03:50:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:28,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534677954] [2024-06-28 03:50:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534677954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:28,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:28,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825183814] [2024-06-28 03:50:28,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:28,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:28,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:28,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 202 transitions, 1933 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:28,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:28,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:28,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:29,274 INFO L124 PetriNetUnfolderBase]: 587/1164 cut-off events. [2024-06-28 03:50:29,274 INFO L125 PetriNetUnfolderBase]: For 258377/258377 co-relation queries the response was YES. [2024-06-28 03:50:29,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 1164 events. 587/1164 cut-off events. For 258377/258377 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6619 event pairs, 135 based on Foata normal form. 10/1172 useless extension candidates. Maximal degree in co-relation 8623. Up to 875 conditions per place. [2024-06-28 03:50:29,285 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 71 changer transitions 11/227 dead transitions. [2024-06-28 03:50:29,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 227 transitions, 2497 flow [2024-06-28 03:50:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:50:29,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:50:29,286 INFO L175 Difference]: Start difference. First operand has 298 places, 202 transitions, 1933 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:50:29,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 227 transitions, 2497 flow [2024-06-28 03:50:30,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 227 transitions, 2403 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:30,090 INFO L231 Difference]: Finished difference. Result has 301 places, 203 transitions, 1994 flow [2024-06-28 03:50:30,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1839, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1994, PETRI_PLACES=301, PETRI_TRANSITIONS=203} [2024-06-28 03:50:30,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 03:50:30,091 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 203 transitions, 1994 flow [2024-06-28 03:50:30,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:30,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:30,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:30,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:50:30,091 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:30,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1391739996, now seen corresponding path program 31 times [2024-06-28 03:50:30,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:30,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222178965] [2024-06-28 03:50:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:30,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:31,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222178965] [2024-06-28 03:50:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222178965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:31,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:31,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:31,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238222942] [2024-06-28 03:50:31,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:31,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:31,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:31,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:31,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 203 transitions, 1994 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:31,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:31,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:31,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:32,350 INFO L124 PetriNetUnfolderBase]: 579/1152 cut-off events. [2024-06-28 03:50:32,350 INFO L125 PetriNetUnfolderBase]: For 252516/252516 co-relation queries the response was YES. [2024-06-28 03:50:32,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8805 conditions, 1152 events. 579/1152 cut-off events. For 252516/252516 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6566 event pairs, 133 based on Foata normal form. 8/1158 useless extension candidates. Maximal degree in co-relation 8661. Up to 921 conditions per place. [2024-06-28 03:50:32,359 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 52 changer transitions 11/224 dead transitions. [2024-06-28 03:50:32,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 224 transitions, 2514 flow [2024-06-28 03:50:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 03:50:32,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 03:50:32,360 INFO L175 Difference]: Start difference. First operand has 301 places, 203 transitions, 1994 flow. Second operand 12 states and 137 transitions. [2024-06-28 03:50:32,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 224 transitions, 2514 flow [2024-06-28 03:50:33,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 224 transitions, 2367 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:33,184 INFO L231 Difference]: Finished difference. Result has 302 places, 201 transitions, 1935 flow [2024-06-28 03:50:33,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1935, PETRI_PLACES=302, PETRI_TRANSITIONS=201} [2024-06-28 03:50:33,185 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 03:50:33,185 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 201 transitions, 1935 flow [2024-06-28 03:50:33,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:33,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:33,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:50:33,185 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:33,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1396386276, now seen corresponding path program 32 times [2024-06-28 03:50:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635976901] [2024-06-28 03:50:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635976901] [2024-06-28 03:50:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635976901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200224938] [2024-06-28 03:50:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:34,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:34,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:34,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 201 transitions, 1935 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:34,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:34,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:34,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:35,364 INFO L124 PetriNetUnfolderBase]: 576/1147 cut-off events. [2024-06-28 03:50:35,364 INFO L125 PetriNetUnfolderBase]: For 263527/263527 co-relation queries the response was YES. [2024-06-28 03:50:35,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8724 conditions, 1147 events. 576/1147 cut-off events. For 263527/263527 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6509 event pairs, 139 based on Foata normal form. 10/1155 useless extension candidates. Maximal degree in co-relation 8581. Up to 903 conditions per place. [2024-06-28 03:50:35,374 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 163 selfloop transitions, 45 changer transitions 12/222 dead transitions. [2024-06-28 03:50:35,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 222 transitions, 2461 flow [2024-06-28 03:50:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:50:35,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:50:35,374 INFO L175 Difference]: Start difference. First operand has 302 places, 201 transitions, 1935 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:50:35,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 222 transitions, 2461 flow [2024-06-28 03:50:36,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 222 transitions, 2345 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:50:36,161 INFO L231 Difference]: Finished difference. Result has 299 places, 195 transitions, 1870 flow [2024-06-28 03:50:36,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1870, PETRI_PLACES=299, PETRI_TRANSITIONS=195} [2024-06-28 03:50:36,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 03:50:36,161 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 195 transitions, 1870 flow [2024-06-28 03:50:36,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:36,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:36,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:36,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:50:36,162 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:36,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash -771311032, now seen corresponding path program 25 times [2024-06-28 03:50:36,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:36,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994364866] [2024-06-28 03:50:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:36,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:37,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994364866] [2024-06-28 03:50:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994364866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:37,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:37,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14164113] [2024-06-28 03:50:37,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:37,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:37,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:37,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 195 transitions, 1870 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:37,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:37,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:37,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:38,181 INFO L124 PetriNetUnfolderBase]: 546/1093 cut-off events. [2024-06-28 03:50:38,181 INFO L125 PetriNetUnfolderBase]: For 222061/222061 co-relation queries the response was YES. [2024-06-28 03:50:38,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8574 conditions, 1093 events. 546/1093 cut-off events. For 222061/222061 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6186 event pairs, 143 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 8433. Up to 1029 conditions per place. [2024-06-28 03:50:38,190 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 23 changer transitions 0/211 dead transitions. [2024-06-28 03:50:38,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 211 transitions, 2386 flow [2024-06-28 03:50:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:50:38,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:50:38,191 INFO L175 Difference]: Start difference. First operand has 299 places, 195 transitions, 1870 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:50:38,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 211 transitions, 2386 flow [2024-06-28 03:50:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 211 transitions, 2277 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-28 03:50:38,893 INFO L231 Difference]: Finished difference. Result has 294 places, 196 transitions, 1871 flow [2024-06-28 03:50:38,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1871, PETRI_PLACES=294, PETRI_TRANSITIONS=196} [2024-06-28 03:50:38,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-28 03:50:38,893 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 196 transitions, 1871 flow [2024-06-28 03:50:38,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:38,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:38,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:38,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:50:38,894 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:38,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1396208646, now seen corresponding path program 33 times [2024-06-28 03:50:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:38,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608944005] [2024-06-28 03:50:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:40,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:40,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608944005] [2024-06-28 03:50:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608944005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081984731] [2024-06-28 03:50:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:40,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:40,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 196 transitions, 1871 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:40,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:40,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:40,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:40,881 INFO L124 PetriNetUnfolderBase]: 573/1154 cut-off events. [2024-06-28 03:50:40,881 INFO L125 PetriNetUnfolderBase]: For 280517/280517 co-relation queries the response was YES. [2024-06-28 03:50:40,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9286 conditions, 1154 events. 573/1154 cut-off events. For 280517/280517 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6627 event pairs, 150 based on Foata normal form. 8/1160 useless extension candidates. Maximal degree in co-relation 9147. Up to 925 conditions per place. [2024-06-28 03:50:40,890 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 38 changer transitions 9/219 dead transitions. [2024-06-28 03:50:40,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 219 transitions, 2601 flow [2024-06-28 03:50:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:50:40,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:50:40,891 INFO L175 Difference]: Start difference. First operand has 294 places, 196 transitions, 1871 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:50:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 219 transitions, 2601 flow [2024-06-28 03:50:41,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 219 transitions, 2494 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:50:41,741 INFO L231 Difference]: Finished difference. Result has 297 places, 193 transitions, 1821 flow [2024-06-28 03:50:41,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1821, PETRI_PLACES=297, PETRI_TRANSITIONS=193} [2024-06-28 03:50:41,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 03:50:41,742 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 193 transitions, 1821 flow [2024-06-28 03:50:41,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:41,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:41,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:41,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:50:41,743 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:41,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1391624676, now seen corresponding path program 34 times [2024-06-28 03:50:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68316828] [2024-06-28 03:50:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:41,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:42,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68316828] [2024-06-28 03:50:42,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68316828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:42,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:42,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587492376] [2024-06-28 03:50:42,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:42,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:43,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:43,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 193 transitions, 1821 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:43,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:43,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:43,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:43,676 INFO L124 PetriNetUnfolderBase]: 581/1174 cut-off events. [2024-06-28 03:50:43,676 INFO L125 PetriNetUnfolderBase]: For 316995/316995 co-relation queries the response was YES. [2024-06-28 03:50:43,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9931 conditions, 1174 events. 581/1174 cut-off events. For 316995/316995 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6768 event pairs, 147 based on Foata normal form. 8/1180 useless extension candidates. Maximal degree in co-relation 9791. Up to 810 conditions per place. [2024-06-28 03:50:43,688 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 60 changer transitions 11/218 dead transitions. [2024-06-28 03:50:43,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 218 transitions, 2557 flow [2024-06-28 03:50:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:50:43,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 03:50:43,689 INFO L175 Difference]: Start difference. First operand has 297 places, 193 transitions, 1821 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:50:43,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 218 transitions, 2557 flow [2024-06-28 03:50:44,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 218 transitions, 2474 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:44,453 INFO L231 Difference]: Finished difference. Result has 295 places, 189 transitions, 1831 flow [2024-06-28 03:50:44,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1831, PETRI_PLACES=295, PETRI_TRANSITIONS=189} [2024-06-28 03:50:44,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-28 03:50:44,453 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 189 transitions, 1831 flow [2024-06-28 03:50:44,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:44,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:44,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:44,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:50:44,454 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:44,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash 118969638, now seen corresponding path program 26 times [2024-06-28 03:50:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:44,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102964741] [2024-06-28 03:50:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:44,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:45,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102964741] [2024-06-28 03:50:45,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102964741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:45,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:45,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:45,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422274676] [2024-06-28 03:50:45,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:45,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:45,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:45,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:45,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 189 transitions, 1831 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:45,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:45,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:45,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:46,293 INFO L124 PetriNetUnfolderBase]: 570/1153 cut-off events. [2024-06-28 03:50:46,293 INFO L125 PetriNetUnfolderBase]: For 308233/308233 co-relation queries the response was YES. [2024-06-28 03:50:46,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 1153 events. 570/1153 cut-off events. For 308233/308233 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6601 event pairs, 167 based on Foata normal form. 8/1159 useless extension candidates. Maximal degree in co-relation 9815. Up to 1075 conditions per place. [2024-06-28 03:50:46,305 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 14 changer transitions 13/206 dead transitions. [2024-06-28 03:50:46,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 206 transitions, 2343 flow [2024-06-28 03:50:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:50:46,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:50:46,305 INFO L175 Difference]: Start difference. First operand has 295 places, 189 transitions, 1831 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:50:46,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 206 transitions, 2343 flow [2024-06-28 03:50:47,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 206 transitions, 2226 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:50:47,146 INFO L231 Difference]: Finished difference. Result has 289 places, 185 transitions, 1721 flow [2024-06-28 03:50:47,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1721, PETRI_PLACES=289, PETRI_TRANSITIONS=185} [2024-06-28 03:50:47,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-28 03:50:47,147 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 185 transitions, 1721 flow [2024-06-28 03:50:47,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:47,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:47,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:50:47,148 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:47,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -355312056, now seen corresponding path program 27 times [2024-06-28 03:50:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:47,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058902067] [2024-06-28 03:50:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058902067] [2024-06-28 03:50:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058902067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:48,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:48,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068968154] [2024-06-28 03:50:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:48,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:48,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 185 transitions, 1721 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:48,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:48,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:48,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:48,866 INFO L124 PetriNetUnfolderBase]: 566/1149 cut-off events. [2024-06-28 03:50:48,866 INFO L125 PetriNetUnfolderBase]: For 315211/315211 co-relation queries the response was YES. [2024-06-28 03:50:48,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9727 conditions, 1149 events. 566/1149 cut-off events. For 315211/315211 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6596 event pairs, 161 based on Foata normal form. 12/1159 useless extension candidates. Maximal degree in co-relation 9591. Up to 1018 conditions per place. [2024-06-28 03:50:48,877 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 26 changer transitions 7/205 dead transitions. [2024-06-28 03:50:48,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 205 transitions, 2265 flow [2024-06-28 03:50:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:50:48,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:50:48,878 INFO L175 Difference]: Start difference. First operand has 289 places, 185 transitions, 1721 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:50:48,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 205 transitions, 2265 flow [2024-06-28 03:50:49,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 205 transitions, 2231 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:49,664 INFO L231 Difference]: Finished difference. Result has 285 places, 183 transitions, 1778 flow [2024-06-28 03:50:49,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1778, PETRI_PLACES=285, PETRI_TRANSITIONS=183} [2024-06-28 03:50:49,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 03:50:49,665 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 183 transitions, 1778 flow [2024-06-28 03:50:49,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:49,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:49,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:49,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:50:49,666 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:49,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 461268228, now seen corresponding path program 28 times [2024-06-28 03:50:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520947408] [2024-06-28 03:50:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:49,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:50,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:50,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520947408] [2024-06-28 03:50:50,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520947408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:50,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:50,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:50,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808182710] [2024-06-28 03:50:50,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:50,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:50,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:50,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:50,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 183 transitions, 1778 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:50,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:50,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:50,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:51,361 INFO L124 PetriNetUnfolderBase]: 554/1129 cut-off events. [2024-06-28 03:50:51,361 INFO L125 PetriNetUnfolderBase]: For 280739/280739 co-relation queries the response was YES. [2024-06-28 03:50:51,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9671 conditions, 1129 events. 554/1129 cut-off events. For 280739/280739 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6463 event pairs, 167 based on Foata normal form. 8/1135 useless extension candidates. Maximal degree in co-relation 9537. Up to 1054 conditions per place. [2024-06-28 03:50:51,372 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 11 changer transitions 15/200 dead transitions. [2024-06-28 03:50:51,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 200 transitions, 2278 flow [2024-06-28 03:50:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:50:51,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:50:51,373 INFO L175 Difference]: Start difference. First operand has 285 places, 183 transitions, 1778 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:50:51,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 200 transitions, 2278 flow [2024-06-28 03:50:52,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 200 transitions, 2161 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-28 03:50:52,136 INFO L231 Difference]: Finished difference. Result has 285 places, 179 transitions, 1667 flow [2024-06-28 03:50:52,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1667, PETRI_PLACES=285, PETRI_TRANSITIONS=179} [2024-06-28 03:50:52,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 03:50:52,137 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 179 transitions, 1667 flow [2024-06-28 03:50:52,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:52,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:52,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:50:52,137 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:52,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:52,137 INFO L85 PathProgramCache]: Analyzing trace with hash -348816936, now seen corresponding path program 29 times [2024-06-28 03:50:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705594450] [2024-06-28 03:50:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705594450] [2024-06-28 03:50:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705594450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:53,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645623444] [2024-06-28 03:50:53,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:53,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:53,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:53,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:53,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 179 transitions, 1667 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:53,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:53,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:53,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:54,235 INFO L124 PetriNetUnfolderBase]: 532/1083 cut-off events. [2024-06-28 03:50:54,235 INFO L125 PetriNetUnfolderBase]: For 260571/260571 co-relation queries the response was YES. [2024-06-28 03:50:54,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9430 conditions, 1083 events. 532/1083 cut-off events. For 260571/260571 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6110 event pairs, 153 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 9295. Up to 999 conditions per place. [2024-06-28 03:50:54,247 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 168 selfloop transitions, 25 changer transitions 0/195 dead transitions. [2024-06-28 03:50:54,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 195 transitions, 2151 flow [2024-06-28 03:50:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:50:54,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:50:54,248 INFO L175 Difference]: Start difference. First operand has 285 places, 179 transitions, 1667 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:50:54,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 195 transitions, 2151 flow [2024-06-28 03:50:55,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 195 transitions, 2121 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:50:55,087 INFO L231 Difference]: Finished difference. Result has 279 places, 180 transitions, 1753 flow [2024-06-28 03:50:55,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1753, PETRI_PLACES=279, PETRI_TRANSITIONS=180} [2024-06-28 03:50:55,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 03:50:55,087 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 180 transitions, 1753 flow [2024-06-28 03:50:55,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:55,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:55,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:55,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 03:50:55,087 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:55,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash -739012270, now seen corresponding path program 30 times [2024-06-28 03:50:55,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026090249] [2024-06-28 03:50:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:55,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:56,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:56,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026090249] [2024-06-28 03:50:56,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026090249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:56,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:56,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670381296] [2024-06-28 03:50:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:56,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:56,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:56,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 180 transitions, 1753 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:56,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:56,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:56,771 INFO L124 PetriNetUnfolderBase]: 536/1091 cut-off events. [2024-06-28 03:50:56,772 INFO L125 PetriNetUnfolderBase]: For 246346/246346 co-relation queries the response was YES. [2024-06-28 03:50:56,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9465 conditions, 1091 events. 536/1091 cut-off events. For 246346/246346 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6174 event pairs, 163 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 9333. Up to 1031 conditions per place. [2024-06-28 03:50:56,782 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 21 changer transitions 0/195 dead transitions. [2024-06-28 03:50:56,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 195 transitions, 2237 flow [2024-06-28 03:50:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:50:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:50:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:50:56,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:50:56,784 INFO L175 Difference]: Start difference. First operand has 279 places, 180 transitions, 1753 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:50:56,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 195 transitions, 2237 flow [2024-06-28 03:50:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 195 transitions, 2131 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:50:57,530 INFO L231 Difference]: Finished difference. Result has 281 places, 181 transitions, 1758 flow [2024-06-28 03:50:57,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=281, PETRI_TRANSITIONS=181} [2024-06-28 03:50:57,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:50:57,531 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 181 transitions, 1758 flow [2024-06-28 03:50:57,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:57,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:50:57,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:50:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 03:50:57,532 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:50:57,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:50:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash -355319000, now seen corresponding path program 35 times [2024-06-28 03:50:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:50:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317280812] [2024-06-28 03:50:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:50:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:50:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:50:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:50:59,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:50:59,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317280812] [2024-06-28 03:50:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317280812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:50:59,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:50:59,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:50:59,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095972859] [2024-06-28 03:50:59,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:50:59,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:50:59,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:50:59,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:50:59,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:50:59,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:50:59,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 181 transitions, 1758 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:50:59,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:50:59,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:50:59,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:50:59,719 INFO L124 PetriNetUnfolderBase]: 552/1127 cut-off events. [2024-06-28 03:50:59,719 INFO L125 PetriNetUnfolderBase]: For 287011/287011 co-relation queries the response was YES. [2024-06-28 03:50:59,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 1127 events. 552/1127 cut-off events. For 287011/287011 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6457 event pairs, 165 based on Foata normal form. 10/1135 useless extension candidates. Maximal degree in co-relation 9405. Up to 1002 conditions per place. [2024-06-28 03:50:59,730 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 168 selfloop transitions, 23 changer transitions 9/202 dead transitions. [2024-06-28 03:50:59,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 202 transitions, 2244 flow [2024-06-28 03:50:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:50:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:50:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:50:59,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:50:59,731 INFO L175 Difference]: Start difference. First operand has 281 places, 181 transitions, 1758 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:50:59,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 202 transitions, 2244 flow [2024-06-28 03:51:00,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 202 transitions, 2145 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 03:51:00,491 INFO L231 Difference]: Finished difference. Result has 284 places, 178 transitions, 1686 flow [2024-06-28 03:51:00,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1686, PETRI_PLACES=284, PETRI_TRANSITIONS=178} [2024-06-28 03:51:00,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 03:51:00,492 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 178 transitions, 1686 flow [2024-06-28 03:51:00,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:00,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:00,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:00,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 03:51:00,492 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:00,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash -355496630, now seen corresponding path program 36 times [2024-06-28 03:51:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:00,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041635759] [2024-06-28 03:51:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:01,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:01,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041635759] [2024-06-28 03:51:01,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041635759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:01,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:01,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53699396] [2024-06-28 03:51:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:01,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:01,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:01,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:01,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:01,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 178 transitions, 1686 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:01,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:01,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:01,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:02,395 INFO L124 PetriNetUnfolderBase]: 582/1197 cut-off events. [2024-06-28 03:51:02,395 INFO L125 PetriNetUnfolderBase]: For 358424/358424 co-relation queries the response was YES. [2024-06-28 03:51:02,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11271 conditions, 1197 events. 582/1197 cut-off events. For 358424/358424 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6987 event pairs, 181 based on Foata normal form. 8/1203 useless extension candidates. Maximal degree in co-relation 11137. Up to 972 conditions per place. [2024-06-28 03:51:02,407 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 20 changer transitions 8/201 dead transitions. [2024-06-28 03:51:02,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 201 transitions, 2390 flow [2024-06-28 03:51:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:51:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:51:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:51:02,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:51:02,408 INFO L175 Difference]: Start difference. First operand has 284 places, 178 transitions, 1686 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:51:02,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 201 transitions, 2390 flow [2024-06-28 03:51:03,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 201 transitions, 2334 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:51:03,380 INFO L231 Difference]: Finished difference. Result has 281 places, 175 transitions, 1651 flow [2024-06-28 03:51:03,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1651, PETRI_PLACES=281, PETRI_TRANSITIONS=175} [2024-06-28 03:51:03,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:51:03,380 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 175 transitions, 1651 flow [2024-06-28 03:51:03,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:03,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:03,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:03,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 03:51:03,381 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:03,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:03,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2000212218, now seen corresponding path program 31 times [2024-06-28 03:51:03,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:03,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824688228] [2024-06-28 03:51:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:04,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824688228] [2024-06-28 03:51:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824688228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577390236] [2024-06-28 03:51:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:04,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:04,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 175 transitions, 1651 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:04,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:04,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:04,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:05,241 INFO L124 PetriNetUnfolderBase]: 567/1164 cut-off events. [2024-06-28 03:51:05,241 INFO L125 PetriNetUnfolderBase]: For 325663/325663 co-relation queries the response was YES. [2024-06-28 03:51:05,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11184 conditions, 1164 events. 567/1164 cut-off events. For 325663/325663 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6715 event pairs, 187 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 11051. Up to 1088 conditions per place. [2024-06-28 03:51:05,252 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 22 changer transitions 0/190 dead transitions. [2024-06-28 03:51:05,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 190 transitions, 2125 flow [2024-06-28 03:51:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:51:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:51:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:51:05,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:51:05,253 INFO L175 Difference]: Start difference. First operand has 281 places, 175 transitions, 1651 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:51:05,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 190 transitions, 2125 flow [2024-06-28 03:51:06,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 190 transitions, 2067 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 03:51:06,202 INFO L231 Difference]: Finished difference. Result has 276 places, 176 transitions, 1707 flow [2024-06-28 03:51:06,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1707, PETRI_PLACES=276, PETRI_TRANSITIONS=176} [2024-06-28 03:51:06,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-28 03:51:06,203 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 176 transitions, 1707 flow [2024-06-28 03:51:06,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:06,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:06,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:06,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 03:51:06,203 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:06,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -119128326, now seen corresponding path program 32 times [2024-06-28 03:51:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481557747] [2024-06-28 03:51:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:06,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:07,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481557747] [2024-06-28 03:51:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481557747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:07,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:51:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627713775] [2024-06-28 03:51:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:07,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:51:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:51:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:51:07,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:07,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 176 transitions, 1707 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:07,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:07,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:07,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:07,962 INFO L124 PetriNetUnfolderBase]: 571/1172 cut-off events. [2024-06-28 03:51:07,962 INFO L125 PetriNetUnfolderBase]: For 321206/321206 co-relation queries the response was YES. [2024-06-28 03:51:07,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 1172 events. 571/1172 cut-off events. For 321206/321206 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6790 event pairs, 193 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 11137. Up to 1126 conditions per place. [2024-06-28 03:51:07,974 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2024-06-28 03:51:07,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 191 transitions, 2185 flow [2024-06-28 03:51:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:51:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:51:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:51:07,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:51:07,975 INFO L175 Difference]: Start difference. First operand has 276 places, 176 transitions, 1707 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:51:07,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 191 transitions, 2185 flow [2024-06-28 03:51:08,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 191 transitions, 2081 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 03:51:08,949 INFO L231 Difference]: Finished difference. Result has 278 places, 177 transitions, 1707 flow [2024-06-28 03:51:08,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1707, PETRI_PLACES=278, PETRI_TRANSITIONS=177} [2024-06-28 03:51:08,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-28 03:51:08,950 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 177 transitions, 1707 flow [2024-06-28 03:51:08,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:08,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:08,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:08,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 03:51:08,950 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:08,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1024349724, now seen corresponding path program 37 times [2024-06-28 03:51:08,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:08,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264879177] [2024-06-28 03:51:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:08,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264879177] [2024-06-28 03:51:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264879177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:10,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:10,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:10,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308937839] [2024-06-28 03:51:10,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:10,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:10,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:10,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 177 transitions, 1707 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:10,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:10,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:10,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:10,735 INFO L124 PetriNetUnfolderBase]: 566/1169 cut-off events. [2024-06-28 03:51:10,735 INFO L125 PetriNetUnfolderBase]: For 344667/344667 co-relation queries the response was YES. [2024-06-28 03:51:10,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 1169 events. 566/1169 cut-off events. For 344667/344667 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6777 event pairs, 188 based on Foata normal form. 16/1183 useless extension candidates. Maximal degree in co-relation 10079. Up to 1028 conditions per place. [2024-06-28 03:51:10,747 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 15 changer transitions 18/195 dead transitions. [2024-06-28 03:51:10,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 195 transitions, 2169 flow [2024-06-28 03:51:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:51:10,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:51:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:51:10,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:51:10,747 INFO L175 Difference]: Start difference. First operand has 278 places, 177 transitions, 1707 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:51:10,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 195 transitions, 2169 flow [2024-06-28 03:51:11,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 195 transitions, 2075 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 03:51:11,569 INFO L231 Difference]: Finished difference. Result has 280 places, 167 transitions, 1574 flow [2024-06-28 03:51:11,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1574, PETRI_PLACES=280, PETRI_TRANSITIONS=167} [2024-06-28 03:51:11,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 03:51:11,569 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 167 transitions, 1574 flow [2024-06-28 03:51:11,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:11,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:11,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 03:51:11,570 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:11,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash -349062890, now seen corresponding path program 38 times [2024-06-28 03:51:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:11,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222678114] [2024-06-28 03:51:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:11,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222678114] [2024-06-28 03:51:13,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222678114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:13,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:13,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142430953] [2024-06-28 03:51:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:13,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:13,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:13,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:13,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:13,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 167 transitions, 1574 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:13,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:13,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:13,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:13,983 INFO L124 PetriNetUnfolderBase]: 501/1046 cut-off events. [2024-06-28 03:51:13,983 INFO L125 PetriNetUnfolderBase]: For 272215/272215 co-relation queries the response was YES. [2024-06-28 03:51:13,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8705 conditions, 1046 events. 501/1046 cut-off events. For 272215/272215 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5972 event pairs, 159 based on Foata normal form. 10/1054 useless extension candidates. Maximal degree in co-relation 8571. Up to 932 conditions per place. [2024-06-28 03:51:13,993 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 20 changer transitions 9/187 dead transitions. [2024-06-28 03:51:13,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 187 transitions, 2008 flow [2024-06-28 03:51:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:51:13,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 03:51:13,994 INFO L175 Difference]: Start difference. First operand has 280 places, 167 transitions, 1574 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:51:13,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 187 transitions, 2008 flow [2024-06-28 03:51:14,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 187 transitions, 1937 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 03:51:14,661 INFO L231 Difference]: Finished difference. Result has 275 places, 163 transitions, 1514 flow [2024-06-28 03:51:14,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1514, PETRI_PLACES=275, PETRI_TRANSITIONS=163} [2024-06-28 03:51:14,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 03:51:14,662 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 163 transitions, 1514 flow [2024-06-28 03:51:14,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:14,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:14,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:14,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 03:51:14,662 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:14,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:14,663 INFO L85 PathProgramCache]: Analyzing trace with hash -118840026, now seen corresponding path program 33 times [2024-06-28 03:51:14,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:14,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484711905] [2024-06-28 03:51:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:14,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:15,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484711905] [2024-06-28 03:51:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484711905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125792196] [2024-06-28 03:51:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:16,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:16,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 163 transitions, 1514 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:16,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:16,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:16,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:16,501 INFO L124 PetriNetUnfolderBase]: 472/991 cut-off events. [2024-06-28 03:51:16,501 INFO L125 PetriNetUnfolderBase]: For 216410/216410 co-relation queries the response was YES. [2024-06-28 03:51:16,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8082 conditions, 991 events. 472/991 cut-off events. For 216410/216410 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5564 event pairs, 152 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 7951. Up to 945 conditions per place. [2024-06-28 03:51:16,510 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 16 changer transitions 0/177 dead transitions. [2024-06-28 03:51:16,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 177 transitions, 1896 flow [2024-06-28 03:51:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:51:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:51:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:51:16,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:51:16,511 INFO L175 Difference]: Start difference. First operand has 275 places, 163 transitions, 1514 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:51:16,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 177 transitions, 1896 flow [2024-06-28 03:51:16,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 177 transitions, 1810 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 03:51:16,981 INFO L231 Difference]: Finished difference. Result has 269 places, 163 transitions, 1464 flow [2024-06-28 03:51:16,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1464, PETRI_PLACES=269, PETRI_TRANSITIONS=163} [2024-06-28 03:51:16,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 03:51:16,982 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 163 transitions, 1464 flow [2024-06-28 03:51:16,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:16,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:16,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:16,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 03:51:16,982 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:16,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1864010104, now seen corresponding path program 34 times [2024-06-28 03:51:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509573084] [2024-06-28 03:51:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509573084] [2024-06-28 03:51:18,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509573084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:18,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:18,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355176791] [2024-06-28 03:51:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:18,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:18,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 163 transitions, 1464 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:18,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:18,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:18,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:19,056 INFO L124 PetriNetUnfolderBase]: 469/986 cut-off events. [2024-06-28 03:51:19,056 INFO L125 PetriNetUnfolderBase]: For 198583/198583 co-relation queries the response was YES. [2024-06-28 03:51:19,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 986 events. 469/986 cut-off events. For 198583/198583 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5554 event pairs, 133 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 7509. Up to 875 conditions per place. [2024-06-28 03:51:19,064 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 35 changer transitions 0/184 dead transitions. [2024-06-28 03:51:19,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 184 transitions, 1891 flow [2024-06-28 03:51:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 03:51:19,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:51:19,065 INFO L175 Difference]: Start difference. First operand has 269 places, 163 transitions, 1464 flow. Second operand 12 states and 138 transitions. [2024-06-28 03:51:19,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 184 transitions, 1891 flow [2024-06-28 03:51:19,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 184 transitions, 1676 flow, removed 45 selfloop flow, removed 14 redundant places. [2024-06-28 03:51:19,602 INFO L231 Difference]: Finished difference. Result has 267 places, 163 transitions, 1323 flow [2024-06-28 03:51:19,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1323, PETRI_PLACES=267, PETRI_TRANSITIONS=163} [2024-06-28 03:51:19,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 03:51:19,603 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 163 transitions, 1323 flow [2024-06-28 03:51:19,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:19,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:19,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:19,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 03:51:19,603 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:19,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1486448968, now seen corresponding path program 1 times [2024-06-28 03:51:19,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:19,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658643573] [2024-06-28 03:51:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:21,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:21,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658643573] [2024-06-28 03:51:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658643573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:21,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:21,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:21,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616686478] [2024-06-28 03:51:21,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:21,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:21,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:21,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 163 transitions, 1323 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:21,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:21,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:21,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:21,722 INFO L124 PetriNetUnfolderBase]: 462/973 cut-off events. [2024-06-28 03:51:21,722 INFO L125 PetriNetUnfolderBase]: For 191252/191252 co-relation queries the response was YES. [2024-06-28 03:51:21,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6725 conditions, 973 events. 462/973 cut-off events. For 191252/191252 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5474 event pairs, 125 based on Foata normal form. 6/977 useless extension candidates. Maximal degree in co-relation 6601. Up to 590 conditions per place. [2024-06-28 03:51:21,731 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 113 selfloop transitions, 55 changer transitions 14/184 dead transitions. [2024-06-28 03:51:21,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 184 transitions, 1747 flow [2024-06-28 03:51:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 03:51:21,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:51:21,732 INFO L175 Difference]: Start difference. First operand has 267 places, 163 transitions, 1323 flow. Second operand 12 states and 138 transitions. [2024-06-28 03:51:21,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 184 transitions, 1747 flow [2024-06-28 03:51:22,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 184 transitions, 1593 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 03:51:22,083 INFO L231 Difference]: Finished difference. Result has 266 places, 158 transitions, 1255 flow [2024-06-28 03:51:22,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1255, PETRI_PLACES=266, PETRI_TRANSITIONS=158} [2024-06-28 03:51:22,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 03:51:22,083 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 158 transitions, 1255 flow [2024-06-28 03:51:22,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:22,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:22,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:22,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 03:51:22,083 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:22,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -592566938, now seen corresponding path program 2 times [2024-06-28 03:51:22,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239410301] [2024-06-28 03:51:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:24,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:24,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239410301] [2024-06-28 03:51:24,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239410301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:24,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:24,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748565993] [2024-06-28 03:51:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:24,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:24,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:24,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:24,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 158 transitions, 1255 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:24,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:24,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:24,891 INFO L124 PetriNetUnfolderBase]: 452/951 cut-off events. [2024-06-28 03:51:24,891 INFO L125 PetriNetUnfolderBase]: For 195360/195360 co-relation queries the response was YES. [2024-06-28 03:51:24,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6594 conditions, 951 events. 452/951 cut-off events. For 195360/195360 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5321 event pairs, 122 based on Foata normal form. 6/955 useless extension candidates. Maximal degree in co-relation 6472. Up to 583 conditions per place. [2024-06-28 03:51:24,899 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 53 changer transitions 10/179 dead transitions. [2024-06-28 03:51:24,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 179 transitions, 1667 flow [2024-06-28 03:51:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:51:24,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 03:51:24,900 INFO L175 Difference]: Start difference. First operand has 266 places, 158 transitions, 1255 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:51:24,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 179 transitions, 1667 flow [2024-06-28 03:51:25,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 179 transitions, 1547 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:51:25,307 INFO L231 Difference]: Finished difference. Result has 257 places, 154 transitions, 1224 flow [2024-06-28 03:51:25,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1224, PETRI_PLACES=257, PETRI_TRANSITIONS=154} [2024-06-28 03:51:25,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 03:51:25,307 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 154 transitions, 1224 flow [2024-06-28 03:51:25,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:25,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:25,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 03:51:25,307 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:25,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash -793915658, now seen corresponding path program 3 times [2024-06-28 03:51:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:25,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864996672] [2024-06-28 03:51:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:27,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:27,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864996672] [2024-06-28 03:51:27,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864996672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:27,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:27,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:27,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496482284] [2024-06-28 03:51:27,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:27,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:27,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:27,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 154 transitions, 1224 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:27,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:27,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:27,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:28,114 INFO L124 PetriNetUnfolderBase]: 425/894 cut-off events. [2024-06-28 03:51:28,114 INFO L125 PetriNetUnfolderBase]: For 153897/153897 co-relation queries the response was YES. [2024-06-28 03:51:28,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 894 events. 425/894 cut-off events. For 153897/153897 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4896 event pairs, 110 based on Foata normal form. 6/898 useless extension candidates. Maximal degree in co-relation 5616. Up to 529 conditions per place. [2024-06-28 03:51:28,121 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 100 selfloop transitions, 48 changer transitions 23/173 dead transitions. [2024-06-28 03:51:28,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 173 transitions, 1618 flow [2024-06-28 03:51:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:28,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 03:51:28,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 03:51:28,122 INFO L175 Difference]: Start difference. First operand has 257 places, 154 transitions, 1224 flow. Second operand 12 states and 131 transitions. [2024-06-28 03:51:28,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 173 transitions, 1618 flow [2024-06-28 03:51:28,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 173 transitions, 1504 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:51:28,376 INFO L231 Difference]: Finished difference. Result has 251 places, 144 transitions, 1139 flow [2024-06-28 03:51:28,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1139, PETRI_PLACES=251, PETRI_TRANSITIONS=144} [2024-06-28 03:51:28,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 03:51:28,376 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 144 transitions, 1139 flow [2024-06-28 03:51:28,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:28,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:28,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:28,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 03:51:28,376 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:28,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash -566210874, now seen corresponding path program 4 times [2024-06-28 03:51:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519588854] [2024-06-28 03:51:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:30,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519588854] [2024-06-28 03:51:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519588854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:30,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:30,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:30,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809930818] [2024-06-28 03:51:30,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:30,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:30,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:30,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:30,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 144 transitions, 1139 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:30,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:30,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:30,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:30,769 INFO L124 PetriNetUnfolderBase]: 407/857 cut-off events. [2024-06-28 03:51:30,769 INFO L125 PetriNetUnfolderBase]: For 144085/144085 co-relation queries the response was YES. [2024-06-28 03:51:30,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5494 conditions, 857 events. 407/857 cut-off events. For 144085/144085 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4669 event pairs, 105 based on Foata normal form. 6/861 useless extension candidates. Maximal degree in co-relation 5379. Up to 730 conditions per place. [2024-06-28 03:51:30,775 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 25 changer transitions 16/163 dead transitions. [2024-06-28 03:51:30,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 163 transitions, 1513 flow [2024-06-28 03:51:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:51:30,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 03:51:30,776 INFO L175 Difference]: Start difference. First operand has 251 places, 144 transitions, 1139 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:51:30,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 163 transitions, 1513 flow [2024-06-28 03:51:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 163 transitions, 1387 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-28 03:51:31,010 INFO L231 Difference]: Finished difference. Result has 235 places, 138 transitions, 1016 flow [2024-06-28 03:51:31,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1016, PETRI_PLACES=235, PETRI_TRANSITIONS=138} [2024-06-28 03:51:31,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 03:51:31,011 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 138 transitions, 1016 flow [2024-06-28 03:51:31,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:31,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:31,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 03:51:31,011 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:31,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash -557273574, now seen corresponding path program 5 times [2024-06-28 03:51:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:31,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129269844] [2024-06-28 03:51:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:32,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129269844] [2024-06-28 03:51:32,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129269844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:32,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:32,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137660604] [2024-06-28 03:51:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:32,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:33,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 138 transitions, 1016 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:33,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:33,557 INFO L124 PetriNetUnfolderBase]: 387/821 cut-off events. [2024-06-28 03:51:33,557 INFO L125 PetriNetUnfolderBase]: For 125150/125150 co-relation queries the response was YES. [2024-06-28 03:51:33,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5103 conditions, 821 events. 387/821 cut-off events. For 125150/125150 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4436 event pairs, 101 based on Foata normal form. 6/825 useless extension candidates. Maximal degree in co-relation 4997. Up to 702 conditions per place. [2024-06-28 03:51:33,563 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 21 changer transitions 17/155 dead transitions. [2024-06-28 03:51:33,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 155 transitions, 1368 flow [2024-06-28 03:51:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:51:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:51:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:51:33,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:51:33,564 INFO L175 Difference]: Start difference. First operand has 235 places, 138 transitions, 1016 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:51:33,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 155 transitions, 1368 flow [2024-06-28 03:51:33,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 155 transitions, 1310 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:51:33,819 INFO L231 Difference]: Finished difference. Result has 228 places, 131 transitions, 965 flow [2024-06-28 03:51:33,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=965, PETRI_PLACES=228, PETRI_TRANSITIONS=131} [2024-06-28 03:51:33,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-28 03:51:33,820 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 131 transitions, 965 flow [2024-06-28 03:51:33,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:33,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:33,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:33,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 03:51:33,820 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:33,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash -954808518, now seen corresponding path program 6 times [2024-06-28 03:51:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:33,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30829117] [2024-06-28 03:51:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:35,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30829117] [2024-06-28 03:51:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30829117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:35,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:35,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425364174] [2024-06-28 03:51:35,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:35,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:35,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:35,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:36,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:36,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 131 transitions, 965 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:36,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:36,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:36,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:36,504 INFO L124 PetriNetUnfolderBase]: 367/781 cut-off events. [2024-06-28 03:51:36,505 INFO L125 PetriNetUnfolderBase]: For 119204/119204 co-relation queries the response was YES. [2024-06-28 03:51:36,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 781 events. 367/781 cut-off events. For 119204/119204 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4185 event pairs, 99 based on Foata normal form. 6/785 useless extension candidates. Maximal degree in co-relation 4813. Up to 597 conditions per place. [2024-06-28 03:51:36,510 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 33 changer transitions 11/150 dead transitions. [2024-06-28 03:51:36,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 150 transitions, 1315 flow [2024-06-28 03:51:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:51:36,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:51:36,511 INFO L175 Difference]: Start difference. First operand has 228 places, 131 transitions, 965 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:51:36,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 150 transitions, 1315 flow [2024-06-28 03:51:36,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 150 transitions, 1237 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:51:36,709 INFO L231 Difference]: Finished difference. Result has 219 places, 128 transitions, 941 flow [2024-06-28 03:51:36,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=941, PETRI_PLACES=219, PETRI_TRANSITIONS=128} [2024-06-28 03:51:36,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 03:51:36,709 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 128 transitions, 941 flow [2024-06-28 03:51:36,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:36,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:36,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:36,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 03:51:36,710 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:36,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 895967498, now seen corresponding path program 7 times [2024-06-28 03:51:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:36,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522362777] [2024-06-28 03:51:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:36,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:39,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522362777] [2024-06-28 03:51:39,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522362777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:39,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946156591] [2024-06-28 03:51:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:39,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:39,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:39,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:39,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:39,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 128 transitions, 941 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:39,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:39,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:39,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:39,863 INFO L124 PetriNetUnfolderBase]: 357/763 cut-off events. [2024-06-28 03:51:39,863 INFO L125 PetriNetUnfolderBase]: For 110597/110597 co-relation queries the response was YES. [2024-06-28 03:51:39,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 763 events. 357/763 cut-off events. For 110597/110597 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4068 event pairs, 95 based on Foata normal form. 6/767 useless extension candidates. Maximal degree in co-relation 4667. Up to 612 conditions per place. [2024-06-28 03:51:39,869 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 29 changer transitions 14/146 dead transitions. [2024-06-28 03:51:39,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 146 transitions, 1279 flow [2024-06-28 03:51:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:51:39,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:51:39,869 INFO L175 Difference]: Start difference. First operand has 219 places, 128 transitions, 941 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:51:39,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 146 transitions, 1279 flow [2024-06-28 03:51:40,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 146 transitions, 1207 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:51:40,049 INFO L231 Difference]: Finished difference. Result has 215 places, 122 transitions, 901 flow [2024-06-28 03:51:40,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=901, PETRI_PLACES=215, PETRI_TRANSITIONS=122} [2024-06-28 03:51:40,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 03:51:40,049 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 122 transitions, 901 flow [2024-06-28 03:51:40,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:40,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:40,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:40,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 03:51:40,050 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:40,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:40,050 INFO L85 PathProgramCache]: Analyzing trace with hash 737630234, now seen corresponding path program 8 times [2024-06-28 03:51:40,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:40,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359342884] [2024-06-28 03:51:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:40,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:42,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359342884] [2024-06-28 03:51:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359342884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:42,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537505449] [2024-06-28 03:51:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:42,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:42,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:42,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:42,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:42,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 122 transitions, 901 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:42,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:42,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:42,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:42,511 INFO L124 PetriNetUnfolderBase]: 337/727 cut-off events. [2024-06-28 03:51:42,511 INFO L125 PetriNetUnfolderBase]: For 105084/105084 co-relation queries the response was YES. [2024-06-28 03:51:42,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4596 conditions, 727 events. 337/727 cut-off events. For 105084/105084 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3842 event pairs, 91 based on Foata normal form. 6/731 useless extension candidates. Maximal degree in co-relation 4499. Up to 584 conditions per place. [2024-06-28 03:51:42,517 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 26 changer transitions 12/140 dead transitions. [2024-06-28 03:51:42,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 140 transitions, 1225 flow [2024-06-28 03:51:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:51:42,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:51:42,518 INFO L175 Difference]: Start difference. First operand has 215 places, 122 transitions, 901 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:51:42,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 140 transitions, 1225 flow [2024-06-28 03:51:42,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 140 transitions, 1159 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:51:42,683 INFO L231 Difference]: Finished difference. Result has 208 places, 116 transitions, 848 flow [2024-06-28 03:51:42,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=848, PETRI_PLACES=208, PETRI_TRANSITIONS=116} [2024-06-28 03:51:42,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 03:51:42,684 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 116 transitions, 848 flow [2024-06-28 03:51:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:42,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:42,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:42,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 03:51:42,684 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:42,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash 536281514, now seen corresponding path program 9 times [2024-06-28 03:51:42,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:42,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181378279] [2024-06-28 03:51:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181378279] [2024-06-28 03:51:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181378279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:45,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:45,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100436864] [2024-06-28 03:51:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:45,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:45,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 116 transitions, 848 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:45,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:45,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:45,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:45,798 INFO L124 PetriNetUnfolderBase]: 321/695 cut-off events. [2024-06-28 03:51:45,799 INFO L125 PetriNetUnfolderBase]: For 96899/96899 co-relation queries the response was YES. [2024-06-28 03:51:45,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4399 conditions, 695 events. 321/695 cut-off events. For 96899/96899 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3622 event pairs, 92 based on Foata normal form. 6/699 useless extension candidates. Maximal degree in co-relation 4305. Up to 571 conditions per place. [2024-06-28 03:51:45,806 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 91 selfloop transitions, 19 changer transitions 21/133 dead transitions. [2024-06-28 03:51:45,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 133 transitions, 1156 flow [2024-06-28 03:51:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:51:45,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:51:45,807 INFO L175 Difference]: Start difference. First operand has 208 places, 116 transitions, 848 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:51:45,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 133 transitions, 1156 flow [2024-06-28 03:51:45,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 133 transitions, 1092 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-28 03:51:45,970 INFO L231 Difference]: Finished difference. Result has 201 places, 106 transitions, 762 flow [2024-06-28 03:51:45,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=762, PETRI_PLACES=201, PETRI_TRANSITIONS=106} [2024-06-28 03:51:45,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 03:51:45,970 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 106 transitions, 762 flow [2024-06-28 03:51:45,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:45,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:45,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 03:51:45,970 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:45,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash -788802474, now seen corresponding path program 10 times [2024-06-28 03:51:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:45,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602819394] [2024-06-28 03:51:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:48,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:48,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602819394] [2024-06-28 03:51:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602819394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:48,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:48,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548121201] [2024-06-28 03:51:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:48,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:48,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:48,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 106 transitions, 762 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:48,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:48,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:48,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:48,810 INFO L124 PetriNetUnfolderBase]: 318/686 cut-off events. [2024-06-28 03:51:48,810 INFO L125 PetriNetUnfolderBase]: For 103901/103901 co-relation queries the response was YES. [2024-06-28 03:51:48,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 686 events. 318/686 cut-off events. For 103901/103901 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3540 event pairs, 104 based on Foata normal form. 6/690 useless extension candidates. Maximal degree in co-relation 4571. Up to 474 conditions per place. [2024-06-28 03:51:48,814 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 23 changer transitions 10/127 dead transitions. [2024-06-28 03:51:48,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 127 transitions, 1214 flow [2024-06-28 03:51:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 03:51:48,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:51:48,815 INFO L175 Difference]: Start difference. First operand has 201 places, 106 transitions, 762 flow. Second operand 12 states and 132 transitions. [2024-06-28 03:51:48,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 127 transitions, 1214 flow [2024-06-28 03:51:48,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 127 transitions, 1142 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-28 03:51:48,959 INFO L231 Difference]: Finished difference. Result has 186 places, 102 transitions, 735 flow [2024-06-28 03:51:48,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=186, PETRI_TRANSITIONS=102} [2024-06-28 03:51:48,960 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 03:51:48,960 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 102 transitions, 735 flow [2024-06-28 03:51:48,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:48,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:48,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 03:51:48,960 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:48,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1155897768, now seen corresponding path program 11 times [2024-06-28 03:51:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:48,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224271742] [2024-06-28 03:51:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:50,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:50,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224271742] [2024-06-28 03:51:50,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224271742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:50,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:50,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:50,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519898614] [2024-06-28 03:51:50,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:50,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:50,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:50,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:50,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 102 transitions, 735 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:50,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:50,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:50,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:51,121 INFO L124 PetriNetUnfolderBase]: 291/629 cut-off events. [2024-06-28 03:51:51,121 INFO L125 PetriNetUnfolderBase]: For 75307/75307 co-relation queries the response was YES. [2024-06-28 03:51:51,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3870 conditions, 629 events. 291/629 cut-off events. For 75307/75307 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3153 event pairs, 91 based on Foata normal form. 6/633 useless extension candidates. Maximal degree in co-relation 3785. Up to 517 conditions per place. [2024-06-28 03:51:51,125 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 19 changer transitions 14/120 dead transitions. [2024-06-28 03:51:51,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 120 transitions, 1019 flow [2024-06-28 03:51:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:51:51,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:51:51,126 INFO L175 Difference]: Start difference. First operand has 186 places, 102 transitions, 735 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:51:51,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 120 transitions, 1019 flow [2024-06-28 03:51:51,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 120 transitions, 967 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:51:51,245 INFO L231 Difference]: Finished difference. Result has 181 places, 97 transitions, 695 flow [2024-06-28 03:51:51,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=695, PETRI_PLACES=181, PETRI_TRANSITIONS=97} [2024-06-28 03:51:51,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-28 03:51:51,245 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 97 transitions, 695 flow [2024-06-28 03:51:51,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:51,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:51,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:51,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 03:51:51,246 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:51,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:51,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1848431078, now seen corresponding path program 12 times [2024-06-28 03:51:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:51,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368173254] [2024-06-28 03:51:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:51,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:52,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:52,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368173254] [2024-06-28 03:51:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368173254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:52,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:52,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70396965] [2024-06-28 03:51:52,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:52,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:52,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:52,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 97 transitions, 695 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:52,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:52,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:52,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:53,197 INFO L124 PetriNetUnfolderBase]: 266/574 cut-off events. [2024-06-28 03:51:53,198 INFO L125 PetriNetUnfolderBase]: For 57133/57133 co-relation queries the response was YES. [2024-06-28 03:51:53,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 574 events. 266/574 cut-off events. For 57133/57133 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2766 event pairs, 78 based on Foata normal form. 6/578 useless extension candidates. Maximal degree in co-relation 3171. Up to 474 conditions per place. [2024-06-28 03:51:53,201 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 11 changer transitions 26/114 dead transitions. [2024-06-28 03:51:53,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 114 transitions, 963 flow [2024-06-28 03:51:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:51:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 03:51:53,202 INFO L175 Difference]: Start difference. First operand has 181 places, 97 transitions, 695 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:51:53,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 114 transitions, 963 flow [2024-06-28 03:51:53,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 114 transitions, 915 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:51:53,274 INFO L231 Difference]: Finished difference. Result has 172 places, 85 transitions, 600 flow [2024-06-28 03:51:53,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=600, PETRI_PLACES=172, PETRI_TRANSITIONS=85} [2024-06-28 03:51:53,274 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-28 03:51:53,274 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 85 transitions, 600 flow [2024-06-28 03:51:53,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:53,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:53,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:53,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 03:51:53,275 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:53,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1010859206, now seen corresponding path program 13 times [2024-06-28 03:51:53,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:53,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135005829] [2024-06-28 03:51:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:54,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:54,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135005829] [2024-06-28 03:51:54,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135005829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:54,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:54,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:51:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83902749] [2024-06-28 03:51:54,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:54,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:51:54,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:54,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:51:54,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:51:55,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:55,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 85 transitions, 600 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:55,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:55,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:55,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:55,417 INFO L124 PetriNetUnfolderBase]: 248/529 cut-off events. [2024-06-28 03:51:55,417 INFO L125 PetriNetUnfolderBase]: For 49900/49900 co-relation queries the response was YES. [2024-06-28 03:51:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 529 events. 248/529 cut-off events. For 49900/49900 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2539 event pairs, 74 based on Foata normal form. 6/534 useless extension candidates. Maximal degree in co-relation 2915. Up to 448 conditions per place. [2024-06-28 03:51:55,420 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 12 changer transitions 17/102 dead transitions. [2024-06-28 03:51:55,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 102 transitions, 844 flow [2024-06-28 03:51:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 03:51:55,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:51:55,421 INFO L175 Difference]: Start difference. First operand has 172 places, 85 transitions, 600 flow. Second operand 12 states and 123 transitions. [2024-06-28 03:51:55,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 102 transitions, 844 flow [2024-06-28 03:51:55,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 102 transitions, 791 flow, removed 9 selfloop flow, removed 18 redundant places. [2024-06-28 03:51:55,481 INFO L231 Difference]: Finished difference. Result has 149 places, 80 transitions, 542 flow [2024-06-28 03:51:55,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=542, PETRI_PLACES=149, PETRI_TRANSITIONS=80} [2024-06-28 03:51:55,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-28 03:51:55,482 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 80 transitions, 542 flow [2024-06-28 03:51:55,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:55,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:55,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:55,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 03:51:55,482 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:55,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1524565900, now seen corresponding path program 14 times [2024-06-28 03:51:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380719316] [2024-06-28 03:51:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:55,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:57,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:57,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380719316] [2024-06-28 03:51:57,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380719316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:57,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:57,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630028531] [2024-06-28 03:51:57,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:57,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:57,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:57,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 80 transitions, 542 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:57,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:57,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:57,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:57,671 INFO L124 PetriNetUnfolderBase]: 232/497 cut-off events. [2024-06-28 03:51:57,671 INFO L125 PetriNetUnfolderBase]: For 37004/37004 co-relation queries the response was YES. [2024-06-28 03:51:57,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 497 events. 232/497 cut-off events. For 37004/37004 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2334 event pairs, 72 based on Foata normal form. 6/502 useless extension candidates. Maximal degree in co-relation 2616. Up to 428 conditions per place. [2024-06-28 03:51:57,673 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 10 changer transitions 14/96 dead transitions. [2024-06-28 03:51:57,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 96 transitions, 770 flow [2024-06-28 03:51:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 03:51:57,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:51:57,674 INFO L175 Difference]: Start difference. First operand has 149 places, 80 transitions, 542 flow. Second operand 12 states and 120 transitions. [2024-06-28 03:51:57,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 96 transitions, 770 flow [2024-06-28 03:51:57,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 96 transitions, 738 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:51:57,729 INFO L231 Difference]: Finished difference. Result has 142 places, 76 transitions, 505 flow [2024-06-28 03:51:57,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=505, PETRI_PLACES=142, PETRI_TRANSITIONS=76} [2024-06-28 03:51:57,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 03:51:57,729 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 76 transitions, 505 flow [2024-06-28 03:51:57,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:57,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:51:57,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:51:57,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 03:51:57,730 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:51:57,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:51:57,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1870228936, now seen corresponding path program 15 times [2024-06-28 03:51:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:51:57,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280974679] [2024-06-28 03:51:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:51:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:51:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:51:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:51:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:51:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280974679] [2024-06-28 03:51:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280974679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:51:59,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:51:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:51:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878019439] [2024-06-28 03:51:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:51:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:51:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:51:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:51:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:51:59,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:51:59,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 76 transitions, 505 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:51:59,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:51:59,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:51:59,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:51:59,989 INFO L124 PetriNetUnfolderBase]: 218/471 cut-off events. [2024-06-28 03:51:59,989 INFO L125 PetriNetUnfolderBase]: For 34048/34048 co-relation queries the response was YES. [2024-06-28 03:51:59,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 471 events. 218/471 cut-off events. For 34048/34048 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2183 event pairs, 70 based on Foata normal form. 6/476 useless extension candidates. Maximal degree in co-relation 2474. Up to 392 conditions per place. [2024-06-28 03:51:59,993 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 12 changer transitions 12/93 dead transitions. [2024-06-28 03:51:59,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 93 transitions, 733 flow [2024-06-28 03:51:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:51:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:51:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 03:51:59,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:51:59,994 INFO L175 Difference]: Start difference. First operand has 142 places, 76 transitions, 505 flow. Second operand 12 states and 124 transitions. [2024-06-28 03:51:59,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 93 transitions, 733 flow [2024-06-28 03:52:00,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 93 transitions, 692 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:52:00,046 INFO L231 Difference]: Finished difference. Result has 135 places, 72 transitions, 468 flow [2024-06-28 03:52:00,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=468, PETRI_PLACES=135, PETRI_TRANSITIONS=72} [2024-06-28 03:52:00,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:52:00,046 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 72 transitions, 468 flow [2024-06-28 03:52:00,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:00,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:00,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:00,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 03:52:00,047 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:00,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash 338517644, now seen corresponding path program 16 times [2024-06-28 03:52:00,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:00,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513015020] [2024-06-28 03:52:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:00,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:01,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513015020] [2024-06-28 03:52:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513015020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:01,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693906689] [2024-06-28 03:52:01,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:02,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:02,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 72 transitions, 468 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:02,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:02,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:02,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:02,428 INFO L124 PetriNetUnfolderBase]: 194/419 cut-off events. [2024-06-28 03:52:02,428 INFO L125 PetriNetUnfolderBase]: For 25028/25028 co-relation queries the response was YES. [2024-06-28 03:52:02,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 419 events. 194/419 cut-off events. For 25028/25028 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1862 event pairs, 53 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 2010. Up to 276 conditions per place. [2024-06-28 03:52:02,430 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 50 selfloop transitions, 23 changer transitions 14/89 dead transitions. [2024-06-28 03:52:02,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 89 transitions, 688 flow [2024-06-28 03:52:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:52:02,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 03:52:02,431 INFO L175 Difference]: Start difference. First operand has 135 places, 72 transitions, 468 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:52:02,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 89 transitions, 688 flow [2024-06-28 03:52:02,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 89 transitions, 652 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:52:02,457 INFO L231 Difference]: Finished difference. Result has 129 places, 67 transitions, 456 flow [2024-06-28 03:52:02,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=456, PETRI_PLACES=129, PETRI_TRANSITIONS=67} [2024-06-28 03:52:02,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-28 03:52:02,458 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 67 transitions, 456 flow [2024-06-28 03:52:02,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:02,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:02,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:02,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 03:52:02,458 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:02,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash -615845034, now seen corresponding path program 17 times [2024-06-28 03:52:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231438122] [2024-06-28 03:52:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:02,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:03,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231438122] [2024-06-28 03:52:03,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231438122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:03,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066018645] [2024-06-28 03:52:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:04,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:04,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 67 transitions, 456 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:04,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:04,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:04,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:04,506 INFO L124 PetriNetUnfolderBase]: 184/397 cut-off events. [2024-06-28 03:52:04,506 INFO L125 PetriNetUnfolderBase]: For 22208/22208 co-relation queries the response was YES. [2024-06-28 03:52:04,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 397 events. 184/397 cut-off events. For 22208/22208 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1720 event pairs, 55 based on Foata normal form. 6/402 useless extension candidates. Maximal degree in co-relation 1894. Up to 317 conditions per place. [2024-06-28 03:52:04,508 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 52 selfloop transitions, 6 changer transitions 23/83 dead transitions. [2024-06-28 03:52:04,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 83 transitions, 656 flow [2024-06-28 03:52:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 03:52:04,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 03:52:04,509 INFO L175 Difference]: Start difference. First operand has 129 places, 67 transitions, 456 flow. Second operand 12 states and 118 transitions. [2024-06-28 03:52:04,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 83 transitions, 656 flow [2024-06-28 03:52:04,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 83 transitions, 600 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:52:04,530 INFO L231 Difference]: Finished difference. Result has 120 places, 57 transitions, 352 flow [2024-06-28 03:52:04,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=120, PETRI_TRANSITIONS=57} [2024-06-28 03:52:04,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-28 03:52:04,531 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 57 transitions, 352 flow [2024-06-28 03:52:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:04,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:04,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 03:52:04,531 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:04,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:04,531 INFO L85 PathProgramCache]: Analyzing trace with hash 610927274, now seen corresponding path program 18 times [2024-06-28 03:52:04,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:04,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699322940] [2024-06-28 03:52:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:06,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699322940] [2024-06-28 03:52:06,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699322940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:06,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:06,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74266714] [2024-06-28 03:52:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:06,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:06,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:06,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 57 transitions, 352 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:06,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:06,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:06,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:07,087 INFO L124 PetriNetUnfolderBase]: 162/351 cut-off events. [2024-06-28 03:52:07,087 INFO L125 PetriNetUnfolderBase]: For 18182/18182 co-relation queries the response was YES. [2024-06-28 03:52:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 351 events. 162/351 cut-off events. For 18182/18182 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1453 event pairs, 51 based on Foata normal form. 6/356 useless extension candidates. Maximal degree in co-relation 1632. Up to 282 conditions per place. [2024-06-28 03:52:07,089 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 47 selfloop transitions, 7 changer transitions 17/73 dead transitions. [2024-06-28 03:52:07,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 73 transitions, 530 flow [2024-06-28 03:52:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 03:52:07,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-28 03:52:07,089 INFO L175 Difference]: Start difference. First operand has 120 places, 57 transitions, 352 flow. Second operand 12 states and 117 transitions. [2024-06-28 03:52:07,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 73 transitions, 530 flow [2024-06-28 03:52:07,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 73 transitions, 469 flow, removed 7 selfloop flow, removed 17 redundant places. [2024-06-28 03:52:07,103 INFO L231 Difference]: Finished difference. Result has 104 places, 52 transitions, 289 flow [2024-06-28 03:52:07,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=289, PETRI_PLACES=104, PETRI_TRANSITIONS=52} [2024-06-28 03:52:07,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 03:52:07,104 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 52 transitions, 289 flow [2024-06-28 03:52:07,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:07,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:07,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:07,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 03:52:07,104 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:07,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1397886778, now seen corresponding path program 19 times [2024-06-28 03:52:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121731425] [2024-06-28 03:52:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121731425] [2024-06-28 03:52:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121731425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:10,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:10,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197014118] [2024-06-28 03:52:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:10,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:10,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 52 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:10,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:10,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:10,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:10,837 INFO L124 PetriNetUnfolderBase]: 146/319 cut-off events. [2024-06-28 03:52:10,837 INFO L125 PetriNetUnfolderBase]: For 14598/14598 co-relation queries the response was YES. [2024-06-28 03:52:10,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 319 events. 146/319 cut-off events. For 14598/14598 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1276 event pairs, 49 based on Foata normal form. 6/324 useless extension candidates. Maximal degree in co-relation 1430. Up to 194 conditions per place. [2024-06-28 03:52:10,839 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 36 selfloop transitions, 18 changer transitions 11/67 dead transitions. [2024-06-28 03:52:10,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 67 transitions, 451 flow [2024-06-28 03:52:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 03:52:10,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-28 03:52:10,839 INFO L175 Difference]: Start difference. First operand has 104 places, 52 transitions, 289 flow. Second operand 12 states and 117 transitions. [2024-06-28 03:52:10,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 67 transitions, 451 flow [2024-06-28 03:52:10,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 67 transitions, 429 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:52:10,849 INFO L231 Difference]: Finished difference. Result has 97 places, 49 transitions, 291 flow [2024-06-28 03:52:10,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=291, PETRI_PLACES=97, PETRI_TRANSITIONS=49} [2024-06-28 03:52:10,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-28 03:52:10,849 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 49 transitions, 291 flow [2024-06-28 03:52:10,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:10,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:10,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:10,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 03:52:10,850 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:10,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:10,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2071318186, now seen corresponding path program 20 times [2024-06-28 03:52:10,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:10,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080883197] [2024-06-28 03:52:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:13,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:13,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080883197] [2024-06-28 03:52:13,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080883197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:13,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:13,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:13,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391826986] [2024-06-28 03:52:13,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:13,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:13,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:13,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:13,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 49 transitions, 291 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:13,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:13,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:13,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:14,087 INFO L124 PetriNetUnfolderBase]: 121/268 cut-off events. [2024-06-28 03:52:14,087 INFO L125 PetriNetUnfolderBase]: For 9190/9190 co-relation queries the response was YES. [2024-06-28 03:52:14,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 268 events. 121/268 cut-off events. For 9190/9190 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 996 event pairs, 34 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 1084. Up to 204 conditions per place. [2024-06-28 03:52:14,088 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 42 selfloop transitions, 9 changer transitions 11/64 dead transitions. [2024-06-28 03:52:14,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 64 transitions, 447 flow [2024-06-28 03:52:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 03:52:14,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:52:14,089 INFO L175 Difference]: Start difference. First operand has 97 places, 49 transitions, 291 flow. Second operand 12 states and 116 transitions. [2024-06-28 03:52:14,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 64 transitions, 447 flow [2024-06-28 03:52:14,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 64 transitions, 405 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:52:14,097 INFO L231 Difference]: Finished difference. Result has 93 places, 46 transitions, 255 flow [2024-06-28 03:52:14,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=255, PETRI_PLACES=93, PETRI_TRANSITIONS=46} [2024-06-28 03:52:14,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-28 03:52:14,098 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 46 transitions, 255 flow [2024-06-28 03:52:14,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:14,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:14,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:14,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 03:52:14,098 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:14,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1398146248, now seen corresponding path program 21 times [2024-06-28 03:52:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860800828] [2024-06-28 03:52:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:17,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860800828] [2024-06-28 03:52:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860800828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:17,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330878170] [2024-06-28 03:52:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:17,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:17,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 46 transitions, 255 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:17,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:17,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:17,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:17,655 INFO L124 PetriNetUnfolderBase]: 111/250 cut-off events. [2024-06-28 03:52:17,655 INFO L125 PetriNetUnfolderBase]: For 8044/8044 co-relation queries the response was YES. [2024-06-28 03:52:17,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 250 events. 111/250 cut-off events. For 8044/8044 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 907 event pairs, 23 based on Foata normal form. 6/255 useless extension candidates. Maximal degree in co-relation 992. Up to 127 conditions per place. [2024-06-28 03:52:17,656 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 33 selfloop transitions, 16 changer transitions 10/61 dead transitions. [2024-06-28 03:52:17,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 61 transitions, 405 flow [2024-06-28 03:52:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 03:52:17,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-28 03:52:17,657 INFO L175 Difference]: Start difference. First operand has 93 places, 46 transitions, 255 flow. Second operand 12 states and 117 transitions. [2024-06-28 03:52:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 61 transitions, 405 flow [2024-06-28 03:52:17,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 61 transitions, 381 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:52:17,663 INFO L231 Difference]: Finished difference. Result has 88 places, 42 transitions, 247 flow [2024-06-28 03:52:17,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=247, PETRI_PLACES=88, PETRI_TRANSITIONS=42} [2024-06-28 03:52:17,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-28 03:52:17,663 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 42 transitions, 247 flow [2024-06-28 03:52:17,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:17,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:17,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:17,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 03:52:17,664 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:17,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1196797528, now seen corresponding path program 22 times [2024-06-28 03:52:17,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:17,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811102866] [2024-06-28 03:52:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811102866] [2024-06-28 03:52:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811102866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:19,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:19,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756151330] [2024-06-28 03:52:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:19,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:19,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:19,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 42 transitions, 247 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:19,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:19,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:19,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:19,929 INFO L124 PetriNetUnfolderBase]: 84/193 cut-off events. [2024-06-28 03:52:19,930 INFO L125 PetriNetUnfolderBase]: For 4704/4704 co-relation queries the response was YES. [2024-06-28 03:52:19,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 193 events. 84/193 cut-off events. For 4704/4704 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 623 event pairs, 19 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 680. Up to 90 conditions per place. [2024-06-28 03:52:19,930 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 27 selfloop transitions, 11 changer transitions 16/56 dead transitions. [2024-06-28 03:52:19,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 56 transitions, 385 flow [2024-06-28 03:52:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 03:52:19,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-28 03:52:19,931 INFO L175 Difference]: Start difference. First operand has 88 places, 42 transitions, 247 flow. Second operand 12 states and 114 transitions. [2024-06-28 03:52:19,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 56 transitions, 385 flow [2024-06-28 03:52:19,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 56 transitions, 345 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:52:19,935 INFO L231 Difference]: Finished difference. Result has 82 places, 36 transitions, 204 flow [2024-06-28 03:52:19,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=204, PETRI_PLACES=82, PETRI_TRANSITIONS=36} [2024-06-28 03:52:19,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 03:52:19,936 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 36 transitions, 204 flow [2024-06-28 03:52:19,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:19,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:19,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:19,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 03:52:19,936 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:19,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:19,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1204901236, now seen corresponding path program 23 times [2024-06-28 03:52:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:19,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869746406] [2024-06-28 03:52:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869746406] [2024-06-28 03:52:23,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869746406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:23,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:23,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257567389] [2024-06-28 03:52:23,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:23,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:23,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:23,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:23,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 36 transitions, 204 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:23,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:23,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:23,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:24,384 INFO L124 PetriNetUnfolderBase]: 73/168 cut-off events. [2024-06-28 03:52:24,384 INFO L125 PetriNetUnfolderBase]: For 3746/3746 co-relation queries the response was YES. [2024-06-28 03:52:24,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 168 events. 73/168 cut-off events. For 3746/3746 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 503 event pairs, 17 based on Foata normal form. 6/173 useless extension candidates. Maximal degree in co-relation 580. Up to 89 conditions per place. [2024-06-28 03:52:24,384 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 26 selfloop transitions, 12 changer transitions 11/51 dead transitions. [2024-06-28 03:52:24,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 51 transitions, 334 flow [2024-06-28 03:52:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 03:52:24,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:52:24,385 INFO L175 Difference]: Start difference. First operand has 82 places, 36 transitions, 204 flow. Second operand 12 states and 116 transitions. [2024-06-28 03:52:24,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 51 transitions, 334 flow [2024-06-28 03:52:24,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 51 transitions, 300 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:52:24,387 INFO L231 Difference]: Finished difference. Result has 71 places, 33 transitions, 183 flow [2024-06-28 03:52:24,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=183, PETRI_PLACES=71, PETRI_TRANSITIONS=33} [2024-06-28 03:52:24,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-28 03:52:24,388 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 33 transitions, 183 flow [2024-06-28 03:52:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:24,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:24,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 03:52:24,388 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:24,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1204641766, now seen corresponding path program 24 times [2024-06-28 03:52:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213433425] [2024-06-28 03:52:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:28,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:28,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213433425] [2024-06-28 03:52:28,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213433425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:28,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:28,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:28,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652480339] [2024-06-28 03:52:28,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:28,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:28,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 33 transitions, 183 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:28,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:28,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:28,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:28,574 INFO L124 PetriNetUnfolderBase]: 63/150 cut-off events. [2024-06-28 03:52:28,574 INFO L125 PetriNetUnfolderBase]: For 2394/2394 co-relation queries the response was YES. [2024-06-28 03:52:28,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 150 events. 63/150 cut-off events. For 2394/2394 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 426 event pairs, 6 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 504. Up to 65 conditions per place. [2024-06-28 03:52:28,575 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 25 selfloop transitions, 11 changer transitions 10/48 dead transitions. [2024-06-28 03:52:28,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 48 transitions, 307 flow [2024-06-28 03:52:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 03:52:28,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:52:28,575 INFO L175 Difference]: Start difference. First operand has 71 places, 33 transitions, 183 flow. Second operand 12 states and 116 transitions. [2024-06-28 03:52:28,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 48 transitions, 307 flow [2024-06-28 03:52:28,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 48 transitions, 277 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:52:28,577 INFO L231 Difference]: Finished difference. Result has 67 places, 29 transitions, 159 flow [2024-06-28 03:52:28,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=159, PETRI_PLACES=67, PETRI_TRANSITIONS=29} [2024-06-28 03:52:28,578 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-28 03:52:28,578 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 29 transitions, 159 flow [2024-06-28 03:52:28,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:28,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:28,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:28,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 03:52:28,579 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:28,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1405990486, now seen corresponding path program 25 times [2024-06-28 03:52:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845664441] [2024-06-28 03:52:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:30,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:30,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845664441] [2024-06-28 03:52:30,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845664441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:30,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369965007] [2024-06-28 03:52:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:30,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:30,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:30,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:30,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 29 transitions, 159 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:30,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:30,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:30,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:31,198 INFO L124 PetriNetUnfolderBase]: 51/126 cut-off events. [2024-06-28 03:52:31,198 INFO L125 PetriNetUnfolderBase]: For 1936/1936 co-relation queries the response was YES. [2024-06-28 03:52:31,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 126 events. 51/126 cut-off events. For 1936/1936 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 318 event pairs, 15 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 428. Up to 61 conditions per place. [2024-06-28 03:52:31,199 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 5 changer transitions 18/43 dead transitions. [2024-06-28 03:52:31,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 43 transitions, 271 flow [2024-06-28 03:52:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 03:52:31,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-28 03:52:31,200 INFO L175 Difference]: Start difference. First operand has 67 places, 29 transitions, 159 flow. Second operand 12 states and 113 transitions. [2024-06-28 03:52:31,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 43 transitions, 271 flow [2024-06-28 03:52:31,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 241 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:52:31,202 INFO L231 Difference]: Finished difference. Result has 61 places, 22 transitions, 110 flow [2024-06-28 03:52:31,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=22} [2024-06-28 03:52:31,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-28 03:52:31,202 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 22 transitions, 110 flow [2024-06-28 03:52:31,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:31,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:52:31,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:31,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 03:52:31,203 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:52:31,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:52:31,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2071577656, now seen corresponding path program 26 times [2024-06-28 03:52:31,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:52:31,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193192062] [2024-06-28 03:52:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:52:31,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:52:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:52:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:52:33,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:52:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193192062] [2024-06-28 03:52:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193192062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:52:33,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:52:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:52:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617943646] [2024-06-28 03:52:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:52:33,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:52:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:52:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:52:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:52:33,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:52:33,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 22 transitions, 110 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:33,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:52:33,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:52:33,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:52:33,870 INFO L124 PetriNetUnfolderBase]: 24/65 cut-off events. [2024-06-28 03:52:33,870 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2024-06-28 03:52:33,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 65 events. 24/65 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 168. Up to 24 conditions per place. [2024-06-28 03:52:33,870 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-28 03:52:33,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 31 transitions, 156 flow [2024-06-28 03:52:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:52:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:52:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 102 transitions. [2024-06-28 03:52:33,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27419354838709675 [2024-06-28 03:52:33,871 INFO L175 Difference]: Start difference. First operand has 61 places, 22 transitions, 110 flow. Second operand 12 states and 102 transitions. [2024-06-28 03:52:33,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 31 transitions, 156 flow [2024-06-28 03:52:33,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-28 03:52:33,872 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-28 03:52:33,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-28 03:52:33,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-28 03:52:33,872 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-28 03:52:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:52:33,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:52:33,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:52:33,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:52:33,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:52:33,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 03:52:33,876 INFO L445 BasicCegarLoop]: Path program histogram: [38, 34, 26, 18, 18, 17, 15, 10, 7, 6, 6, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:52:33,878 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:52:33,878 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:52:33,881 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:52:33,881 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:52:33,882 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:52:33 BasicIcfg [2024-06-28 03:52:33,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:52:33,882 INFO L158 Benchmark]: Toolchain (without parser) took 532351.13ms. Allocated memory was 180.4MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 117.3MB in the beginning and 999.3MB in the end (delta: -882.1MB). Peak memory consumption was 959.4MB. Max. memory is 16.1GB. [2024-06-28 03:52:33,883 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 180.4MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:52:33,883 INFO L158 Benchmark]: Witness Parser took 0.08ms. Allocated memory is still 180.4MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:52:33,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.76ms. Allocated memory is still 180.4MB. Free memory was 116.9MB in the beginning and 81.6MB in the end (delta: 35.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-28 03:52:33,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.29ms. Allocated memory is still 180.4MB. Free memory was 81.6MB in the beginning and 78.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:52:33,883 INFO L158 Benchmark]: Boogie Preprocessor took 62.11ms. Allocated memory is still 180.4MB. Free memory was 78.2MB in the beginning and 74.5MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:52:33,884 INFO L158 Benchmark]: RCFGBuilder took 878.61ms. Allocated memory is still 180.4MB. Free memory was 74.5MB in the beginning and 111.9MB in the end (delta: -37.4MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2024-06-28 03:52:33,884 INFO L158 Benchmark]: TraceAbstraction took 530655.51ms. Allocated memory was 180.4MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 111.9MB in the beginning and 999.3MB in the end (delta: -887.5MB). Peak memory consumption was 954.7MB. Max. memory is 16.1GB. [2024-06-28 03:52:33,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 180.4MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.08ms. Allocated memory is still 180.4MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.76ms. Allocated memory is still 180.4MB. Free memory was 116.9MB in the beginning and 81.6MB in the end (delta: 35.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.29ms. Allocated memory is still 180.4MB. Free memory was 81.6MB in the beginning and 78.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.11ms. Allocated memory is still 180.4MB. Free memory was 78.2MB in the beginning and 74.5MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 878.61ms. Allocated memory is still 180.4MB. Free memory was 74.5MB in the beginning and 111.9MB in the end (delta: -37.4MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * TraceAbstraction took 530655.51ms. Allocated memory was 180.4MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 111.9MB in the beginning and 999.3MB in the end (delta: -887.5MB). Peak memory consumption was 954.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 530.6s, OverallIterations: 229, TraceHistogramMax: 1, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 223.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15917 SdHoareTripleChecker+Valid, 74.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13588 mSDsluCounter, 9625 SdHoareTripleChecker+Invalid, 65.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8766 mSDsCounter, 3911 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114113 IncrementalHoareTripleChecker+Invalid, 118024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3911 mSolverCounterUnsat, 859 mSDtfsCounter, 114113 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2796 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2781 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6564 ImplicationChecksByTransitivity, 95.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3071occurred in iteration=99, InterpolantAutomatonStates: 2373, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 303.4s InterpolantComputationTime, 3810 NumberOfCodeBlocks, 3810 NumberOfCodeBlocksAsserted, 229 NumberOfCheckSat, 3581 ConstructedInterpolants, 0 QuantifiedInterpolants, 181912 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 229 InterpolantComputations, 229 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:52:33,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE