./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_pso.opt_tso.opt.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/mix012_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_pso.opt_tso.opt.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:22:46,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:22:46,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:22:46,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:22:46,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:22:46,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:22:46,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:22:46,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:22:46,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:22:46,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:22:46,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:22:46,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:22:46,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:22:46,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:22:46,311 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:22:46,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:22:46,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:22:46,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:22:46,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:22:46,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:22:46,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:22:46,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:22:46,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:22:46,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:22:46,313 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:22:46,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:22:46,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:22:46,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:22:46,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:22:46,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:22:46,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:22:46,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:22:46,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:22:46,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:22:46,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:22:46,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:22:46,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:22:46,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:22:46,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:22:46,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:22:46,318 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:22:46,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:22:46,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:22:46,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:22:46,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:22:46,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:22:46,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:22:46,564 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:22:46,565 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:22:46,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_pso.opt_tso.opt.yml/witness.yml [2024-06-28 01:22:46,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:22:46,681 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:22:46,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-28 01:22:47,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:22:47,929 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:22:47,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-28 01:22:47,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2e6f7ed3/848e0f16a89340f780f18b6a61c54cb1/FLAGc84fb269c [2024-06-28 01:22:47,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2e6f7ed3/848e0f16a89340f780f18b6a61c54cb1 [2024-06-28 01:22:47,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:22:47,951 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:22:47,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:22:47,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:22:47,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:22:47,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:46" (1/2) ... [2024-06-28 01:22:47,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee6836c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:47, skipping insertion in model container [2024-06-28 01:22:47,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:46" (1/2) ... [2024-06-28 01:22:47,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47939fd7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:22:47, skipping insertion in model container [2024-06-28 01:22:47,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:22:47" (2/2) ... [2024-06-28 01:22:47,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee6836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:47, skipping insertion in model container [2024-06-28 01:22:47,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:22:47" (2/2) ... [2024-06-28 01:22:47,963 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:22:48,018 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:22:48,020 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) [2024-06-28 01:22:48,020 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] (((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 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 || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) [2024-06-28 01:22:48,020 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:22:48,020 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-06-28 01:22:48,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:22:48,202 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i[999,1012] [2024-06-28 01:22:48,386 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:22:48,395 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:22:48,426 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:22:48,505 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:22:48,534 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:22:48,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48 WrapperNode [2024-06-28 01:22:48,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:22:48,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:22:48,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:22:48,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:22:48,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,578 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-06-28 01:22:48,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:22:48,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:22:48,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:22:48,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:22:48,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,617 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 01:22:48,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:22:48,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:22:48,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:22:48,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:22:48,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (1/1) ... [2024-06-28 01:22:48,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:22:48,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:22:48,666 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 01:22:48,675 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 01:22:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:22:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:22:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:22:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:22:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:22:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:22:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:22:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:22:48,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:22:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:22:48,703 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 01:22:48,803 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:22:48,804 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:22:49,126 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:22:49,126 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:22:49,251 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:22:49,251 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:22:49,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:22:49 BoogieIcfgContainer [2024-06-28 01:22:49,252 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:22:49,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:22:49,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:22:49,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:22:49,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:22:46" (1/4) ... [2024-06-28 01:22:49,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e4b39f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:22:49, skipping insertion in model container [2024-06-28 01:22:49,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:22:47" (2/4) ... [2024-06-28 01:22:49,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e4b39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:22:49, skipping insertion in model container [2024-06-28 01:22:49,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:22:48" (3/4) ... [2024-06-28 01:22:49,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e4b39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:22:49, skipping insertion in model container [2024-06-28 01:22:49,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:22:49" (4/4) ... [2024-06-28 01:22:49,258 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-06-28 01:22:49,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:22:49,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:22:49,272 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:22:49,305 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:22:49,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:22:49,360 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-28 01:22:49,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:22:49,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-28 01:22:49,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:22:49,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-28 01:22:49,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:22:49,385 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;@77d3e003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:22:49,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:22:49,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:22:49,396 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:22:49,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:22:49,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:49,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:22:49,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:49,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash 336206949, now seen corresponding path program 1 times [2024-06-28 01:22:49,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:49,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282281726] [2024-06-28 01:22:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:49,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:50,111 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 01:22:50,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:50,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282281726] [2024-06-28 01:22:50,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282281726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:50,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:50,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:22:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796818905] [2024-06-28 01:22:50,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:50,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:22:50,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:22:50,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:22:50,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 36 [2024-06-28 01:22:50,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:50,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:50,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 36 [2024-06-28 01:22:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:50,329 INFO L124 PetriNetUnfolderBase]: 384/690 cut-off events. [2024-06-28 01:22:50,329 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 01:22:50,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 690 events. 384/690 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3511 event pairs, 160 based on Foata normal form. 36/673 useless extension candidates. Maximal degree in co-relation 1343. Up to 639 conditions per place. [2024-06-28 01:22:50,337 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 29 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 01:22:50,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 163 flow [2024-06-28 01:22:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:22:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:22:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 01:22:50,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-06-28 01:22:50,349 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 76 transitions. [2024-06-28 01:22:50,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 163 flow [2024-06-28 01:22:50,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:50,353 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-28 01:22:50,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-28 01:22:50,357 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:22:50,357 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-28 01:22:50,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:50,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:50,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:50,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:22:50,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:50,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 972347140, now seen corresponding path program 1 times [2024-06-28 01:22:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54339411] [2024-06-28 01:22:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:50,793 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 01:22:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:50,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54339411] [2024-06-28 01:22:50,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54339411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:50,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:50,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:22:50,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217481057] [2024-06-28 01:22:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:22:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:22:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:22:50,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:22:50,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:50,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:50,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:22:50,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:50,962 INFO L124 PetriNetUnfolderBase]: 434/747 cut-off events. [2024-06-28 01:22:50,962 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-28 01:22:50,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 747 events. 434/747 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3617 event pairs, 80 based on Foata normal form. 4/716 useless extension candidates. Maximal degree in co-relation 1663. Up to 686 conditions per place. [2024-06-28 01:22:50,967 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 39 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 01:22:50,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 238 flow [2024-06-28 01:22:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:22:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:22:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 01:22:50,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:22:50,970 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 4 states and 96 transitions. [2024-06-28 01:22:50,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 238 flow [2024-06-28 01:22:50,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:50,974 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2024-06-28 01:22:50,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 01:22:50,975 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-28 01:22:50,975 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2024-06-28 01:22:50,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:50,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:50,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:50,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:22:50,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:50,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash 77855476, now seen corresponding path program 1 times [2024-06-28 01:22:50,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:50,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096462355] [2024-06-28 01:22:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:51,051 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 01:22:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096462355] [2024-06-28 01:22:51,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096462355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:51,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:51,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:22:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225665288] [2024-06-28 01:22:51,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:22:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:22:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:22:51,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2024-06-28 01:22:51,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:51,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:51,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2024-06-28 01:22:51,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:51,131 INFO L124 PetriNetUnfolderBase]: 163/381 cut-off events. [2024-06-28 01:22:51,131 INFO L125 PetriNetUnfolderBase]: For 108/115 co-relation queries the response was YES. [2024-06-28 01:22:51,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 381 events. 163/381 cut-off events. For 108/115 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2014 event pairs, 38 based on Foata normal form. 7/372 useless extension candidates. Maximal degree in co-relation 775. Up to 240 conditions per place. [2024-06-28 01:22:51,133 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 20 selfloop transitions, 4 changer transitions 1/43 dead transitions. [2024-06-28 01:22:51,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 177 flow [2024-06-28 01:22:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:22:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:22:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-28 01:22:51,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-06-28 01:22:51,135 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 3 states and 78 transitions. [2024-06-28 01:22:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 177 flow [2024-06-28 01:22:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:51,136 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 112 flow [2024-06-28 01:22:51,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 01:22:51,137 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-06-28 01:22:51,137 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 112 flow [2024-06-28 01:22:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:51,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:51,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:22:51,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:51,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -731217011, now seen corresponding path program 1 times [2024-06-28 01:22:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248838708] [2024-06-28 01:22:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:51,804 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 01:22:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248838708] [2024-06-28 01:22:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248838708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:51,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:51,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644442709] [2024-06-28 01:22:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:51,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:51,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:51,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:51,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:22:51,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:51,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:51,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:22:51,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:52,102 INFO L124 PetriNetUnfolderBase]: 375/673 cut-off events. [2024-06-28 01:22:52,103 INFO L125 PetriNetUnfolderBase]: For 298/298 co-relation queries the response was YES. [2024-06-28 01:22:52,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 673 events. 375/673 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3282 event pairs, 45 based on Foata normal form. 4/668 useless extension candidates. Maximal degree in co-relation 1552. Up to 554 conditions per place. [2024-06-28 01:22:52,106 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 44 selfloop transitions, 8 changer transitions 5/67 dead transitions. [2024-06-28 01:22:52,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 294 flow [2024-06-28 01:22:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:22:52,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-06-28 01:22:52,108 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 112 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:22:52,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 294 flow [2024-06-28 01:22:52,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:52,109 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 127 flow [2024-06-28 01:22:52,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-28 01:22:52,110 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-06-28 01:22:52,110 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 127 flow [2024-06-28 01:22:52,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:52,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:52,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:52,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:22:52,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:52,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1804653252, now seen corresponding path program 1 times [2024-06-28 01:22:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256276561] [2024-06-28 01:22:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:52,622 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 01:22:52,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:52,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256276561] [2024-06-28 01:22:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256276561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:52,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:52,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531258499] [2024-06-28 01:22:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:52,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:52,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:52,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:22:52,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:52,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:52,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:22:52,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:52,822 INFO L124 PetriNetUnfolderBase]: 318/671 cut-off events. [2024-06-28 01:22:52,822 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-06-28 01:22:52,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 671 events. 318/671 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3508 event pairs, 107 based on Foata normal form. 1/646 useless extension candidates. Maximal degree in co-relation 1547. Up to 524 conditions per place. [2024-06-28 01:22:52,826 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 36 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-28 01:22:52,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 260 flow [2024-06-28 01:22:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:22:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:22:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 01:22:52,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 01:22:52,828 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 127 flow. Second operand 5 states and 93 transitions. [2024-06-28 01:22:52,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 260 flow [2024-06-28 01:22:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 240 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:52,832 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 163 flow [2024-06-28 01:22:52,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-06-28 01:22:52,836 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-28 01:22:52,836 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 163 flow [2024-06-28 01:22:52,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:52,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:52,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:52,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:22:52,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:52,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash 109676963, now seen corresponding path program 1 times [2024-06-28 01:22:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439277987] [2024-06-28 01:22:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:53,560 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 01:22:53,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:53,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439277987] [2024-06-28 01:22:53,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439277987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:53,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:53,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:53,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242804016] [2024-06-28 01:22:53,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:53,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:53,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:53,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:22:53,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 01:22:53,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:53,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:22:53,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:53,808 INFO L124 PetriNetUnfolderBase]: 319/675 cut-off events. [2024-06-28 01:22:53,809 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2024-06-28 01:22:53,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 675 events. 319/675 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3530 event pairs, 105 based on Foata normal form. 1/650 useless extension candidates. Maximal degree in co-relation 1653. Up to 515 conditions per place. [2024-06-28 01:22:53,813 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 41 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-28 01:22:53,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 309 flow [2024-06-28 01:22:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 01:22:53,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:22:53,815 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 163 flow. Second operand 6 states and 111 transitions. [2024-06-28 01:22:53,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 309 flow [2024-06-28 01:22:53,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 300 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:53,819 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 189 flow [2024-06-28 01:22:53,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-28 01:22:53,821 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-06-28 01:22:53,822 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 189 flow [2024-06-28 01:22:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 01:22:53,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:53,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:22:53,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:53,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash -895226491, now seen corresponding path program 1 times [2024-06-28 01:22:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147611518] [2024-06-28 01:22:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:54,289 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 01:22:54,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147611518] [2024-06-28 01:22:54,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147611518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:54,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:54,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:54,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852551483] [2024-06-28 01:22:54,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:54,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:54,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:54,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:22:54,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 01:22:54,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:54,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:22:54,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:54,585 INFO L124 PetriNetUnfolderBase]: 400/810 cut-off events. [2024-06-28 01:22:54,586 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2024-06-28 01:22:54,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 810 events. 400/810 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4295 event pairs, 127 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 2112. Up to 631 conditions per place. [2024-06-28 01:22:54,589 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 48 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-28 01:22:54,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 371 flow [2024-06-28 01:22:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 01:22:54,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 01:22:54,591 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 189 flow. Second operand 6 states and 109 transitions. [2024-06-28 01:22:54,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 371 flow [2024-06-28 01:22:54,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 352 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:54,593 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 231 flow [2024-06-28 01:22:54,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-28 01:22:54,594 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-06-28 01:22:54,594 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 231 flow [2024-06-28 01:22:54,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 01:22:54,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:54,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:54,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:22:54,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:54,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -894989341, now seen corresponding path program 2 times [2024-06-28 01:22:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758642931] [2024-06-28 01:22:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:55,118 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 01:22:55,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758642931] [2024-06-28 01:22:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758642931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:55,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:55,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:55,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531989059] [2024-06-28 01:22:55,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:55,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:22:55,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 01:22:55,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:55,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:22:55,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:55,383 INFO L124 PetriNetUnfolderBase]: 412/847 cut-off events. [2024-06-28 01:22:55,383 INFO L125 PetriNetUnfolderBase]: For 1290/1290 co-relation queries the response was YES. [2024-06-28 01:22:55,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 847 events. 412/847 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4553 event pairs, 118 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 2341. Up to 619 conditions per place. [2024-06-28 01:22:55,388 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 47 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-28 01:22:55,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 437 flow [2024-06-28 01:22:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:55,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 01:22:55,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-28 01:22:55,389 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 231 flow. Second operand 7 states and 122 transitions. [2024-06-28 01:22:55,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 437 flow [2024-06-28 01:22:55,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 416 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:55,392 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 277 flow [2024-06-28 01:22:55,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-28 01:22:55,393 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-06-28 01:22:55,393 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 277 flow [2024-06-28 01:22:55,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 01:22:55,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:55,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:55,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:22:55,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:55,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash 637119231, now seen corresponding path program 1 times [2024-06-28 01:22:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:55,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994222157] [2024-06-28 01:22:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:56,028 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 01:22:56,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994222157] [2024-06-28 01:22:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994222157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:56,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:56,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406511306] [2024-06-28 01:22:56,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:56,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:56,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:22:56,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 277 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:56,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:56,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:22:56,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:56,393 INFO L124 PetriNetUnfolderBase]: 450/913 cut-off events. [2024-06-28 01:22:56,393 INFO L125 PetriNetUnfolderBase]: For 1744/1744 co-relation queries the response was YES. [2024-06-28 01:22:56,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2745 conditions, 913 events. 450/913 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4949 event pairs, 129 based on Foata normal form. 1/879 useless extension candidates. Maximal degree in co-relation 2719. Up to 690 conditions per place. [2024-06-28 01:22:56,399 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 59 selfloop transitions, 24 changer transitions 0/91 dead transitions. [2024-06-28 01:22:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 600 flow [2024-06-28 01:22:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:22:56,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:22:56,403 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 277 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:22:56,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 600 flow [2024-06-28 01:22:56,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 571 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:56,408 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 446 flow [2024-06-28 01:22:56,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-28 01:22:56,409 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-06-28 01:22:56,409 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 446 flow [2024-06-28 01:22:56,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:56,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:56,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:56,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:22:56,411 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:56,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1456843753, now seen corresponding path program 2 times [2024-06-28 01:22:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995964049] [2024-06-28 01:22:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:57,068 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 01:22:57,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:57,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995964049] [2024-06-28 01:22:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995964049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:57,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:57,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:57,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152818471] [2024-06-28 01:22:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:57,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:22:57,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:57,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:57,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:22:57,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:57,469 INFO L124 PetriNetUnfolderBase]: 451/890 cut-off events. [2024-06-28 01:22:57,469 INFO L125 PetriNetUnfolderBase]: For 2379/2379 co-relation queries the response was YES. [2024-06-28 01:22:57,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2932 conditions, 890 events. 451/890 cut-off events. For 2379/2379 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4834 event pairs, 123 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 2902. Up to 664 conditions per place. [2024-06-28 01:22:57,475 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 63 selfloop transitions, 25 changer transitions 0/96 dead transitions. [2024-06-28 01:22:57,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 714 flow [2024-06-28 01:22:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:22:57,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-28 01:22:57,476 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 446 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:22:57,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 714 flow [2024-06-28 01:22:57,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 684 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:57,481 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 500 flow [2024-06-28 01:22:57,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=500, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-28 01:22:57,483 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2024-06-28 01:22:57,483 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 500 flow [2024-06-28 01:22:57,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:57,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:57,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:57,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:22:57,483 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:57,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash -297592244, now seen corresponding path program 1 times [2024-06-28 01:22:57,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:57,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214365605] [2024-06-28 01:22:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:57,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:58,072 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 01:22:58,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214365605] [2024-06-28 01:22:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214365605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:58,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:58,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156915960] [2024-06-28 01:22:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:58,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:58,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:22:58,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 500 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:58,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:58,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:22:58,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:58,398 INFO L124 PetriNetUnfolderBase]: 473/915 cut-off events. [2024-06-28 01:22:58,398 INFO L125 PetriNetUnfolderBase]: For 3045/3045 co-relation queries the response was YES. [2024-06-28 01:22:58,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3197 conditions, 915 events. 473/915 cut-off events. For 3045/3045 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4912 event pairs, 125 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 3165. Up to 715 conditions per place. [2024-06-28 01:22:58,403 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 72 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2024-06-28 01:22:58,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 770 flow [2024-06-28 01:22:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:22:58,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-28 01:22:58,405 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 500 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:22:58,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 770 flow [2024-06-28 01:22:58,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 708 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:58,411 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 502 flow [2024-06-28 01:22:58,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-06-28 01:22:58,411 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 35 predicate places. [2024-06-28 01:22:58,412 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 502 flow [2024-06-28 01:22:58,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:58,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:58,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:58,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:22:58,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:58,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 427432036, now seen corresponding path program 2 times [2024-06-28 01:22:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688147023] [2024-06-28 01:22:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:59,069 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 01:22:59,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688147023] [2024-06-28 01:22:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688147023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:59,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:59,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510635415] [2024-06-28 01:22:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:59,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:59,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:59,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:22:59,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 502 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:59,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:59,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:22:59,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:59,395 INFO L124 PetriNetUnfolderBase]: 500/1013 cut-off events. [2024-06-28 01:22:59,395 INFO L125 PetriNetUnfolderBase]: For 3058/3058 co-relation queries the response was YES. [2024-06-28 01:22:59,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 1013 events. 500/1013 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5583 event pairs, 119 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 3429. Up to 680 conditions per place. [2024-06-28 01:22:59,401 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 71 selfloop transitions, 25 changer transitions 0/104 dead transitions. [2024-06-28 01:22:59,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 830 flow [2024-06-28 01:22:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:22:59,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:22:59,403 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 502 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:22:59,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 830 flow [2024-06-28 01:22:59,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 104 transitions, 790 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:59,408 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 573 flow [2024-06-28 01:22:59,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-28 01:22:59,408 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-06-28 01:22:59,409 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 573 flow [2024-06-28 01:22:59,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:59,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:59,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:59,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:22:59,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:59,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1974864796, now seen corresponding path program 3 times [2024-06-28 01:22:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628800552] [2024-06-28 01:22:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:59,966 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 01:22:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628800552] [2024-06-28 01:22:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628800552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:59,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:59,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165396340] [2024-06-28 01:22:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:59,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:23:00,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:00,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 573 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:00,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:00,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:00,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:00,327 INFO L124 PetriNetUnfolderBase]: 496/998 cut-off events. [2024-06-28 01:23:00,327 INFO L125 PetriNetUnfolderBase]: For 3741/3741 co-relation queries the response was YES. [2024-06-28 01:23:00,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3715 conditions, 998 events. 496/998 cut-off events. For 3741/3741 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5475 event pairs, 118 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 3680. Up to 720 conditions per place. [2024-06-28 01:23:00,335 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 77 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-06-28 01:23:00,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 868 flow [2024-06-28 01:23:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:23:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:23:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:23:00,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-28 01:23:00,336 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 573 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:23:00,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 868 flow [2024-06-28 01:23:00,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 832 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:00,343 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 592 flow [2024-06-28 01:23:00,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-06-28 01:23:00,345 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 42 predicate places. [2024-06-28 01:23:00,345 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 592 flow [2024-06-28 01:23:00,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:00,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:00,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:00,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:23:00,346 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:00,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1464478030, now seen corresponding path program 1 times [2024-06-28 01:23:00,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:00,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339218781] [2024-06-28 01:23:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:00,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:01,365 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 01:23:01,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:01,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339218781] [2024-06-28 01:23:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339218781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:01,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:01,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:01,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949478723] [2024-06-28 01:23:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:01,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:01,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:01,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:01,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:01,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:01,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:01,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:01,739 INFO L124 PetriNetUnfolderBase]: 497/1009 cut-off events. [2024-06-28 01:23:01,740 INFO L125 PetriNetUnfolderBase]: For 3865/3865 co-relation queries the response was YES. [2024-06-28 01:23:01,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 1009 events. 497/1009 cut-off events. For 3865/3865 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5574 event pairs, 126 based on Foata normal form. 1/967 useless extension candidates. Maximal degree in co-relation 3778. Up to 774 conditions per place. [2024-06-28 01:23:01,747 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 88 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2024-06-28 01:23:01,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 109 transitions, 890 flow [2024-06-28 01:23:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:23:01,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:23:01,749 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 592 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:23:01,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 109 transitions, 890 flow [2024-06-28 01:23:01,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 848 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:01,755 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 595 flow [2024-06-28 01:23:01,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=595, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-06-28 01:23:01,755 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 45 predicate places. [2024-06-28 01:23:01,755 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 595 flow [2024-06-28 01:23:01,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:01,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:01,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:01,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:23:01,756 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:01,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:01,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1212101428, now seen corresponding path program 1 times [2024-06-28 01:23:01,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:01,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395723888] [2024-06-28 01:23:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:01,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:02,573 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 01:23:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395723888] [2024-06-28 01:23:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395723888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:02,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:02,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:02,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299799067] [2024-06-28 01:23:02,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:02,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:02,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:02,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:02,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:02,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:02,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:02,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:03,078 INFO L124 PetriNetUnfolderBase]: 511/987 cut-off events. [2024-06-28 01:23:03,078 INFO L125 PetriNetUnfolderBase]: For 4198/4198 co-relation queries the response was YES. [2024-06-28 01:23:03,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 987 events. 511/987 cut-off events. For 4198/4198 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5393 event pairs, 134 based on Foata normal form. 1/960 useless extension candidates. Maximal degree in co-relation 3874. Up to 756 conditions per place. [2024-06-28 01:23:03,086 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 79 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-06-28 01:23:03,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 923 flow [2024-06-28 01:23:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:23:03,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:23:03,087 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 595 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:23:03,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 923 flow [2024-06-28 01:23:03,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 879 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:03,095 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 658 flow [2024-06-28 01:23:03,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2024-06-28 01:23:03,095 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-06-28 01:23:03,096 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 658 flow [2024-06-28 01:23:03,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:03,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:03,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:23:03,096 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:03,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:03,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1215855838, now seen corresponding path program 2 times [2024-06-28 01:23:03,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:03,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990736227] [2024-06-28 01:23:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:03,953 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 01:23:03,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:03,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990736227] [2024-06-28 01:23:03,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990736227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:03,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:03,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396003395] [2024-06-28 01:23:03,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:03,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:04,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:04,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 658 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:04,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:04,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:04,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:04,351 INFO L124 PetriNetUnfolderBase]: 522/1012 cut-off events. [2024-06-28 01:23:04,351 INFO L125 PetriNetUnfolderBase]: For 5007/5007 co-relation queries the response was YES. [2024-06-28 01:23:04,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 1012 events. 522/1012 cut-off events. For 5007/5007 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5586 event pairs, 132 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 4093. Up to 781 conditions per place. [2024-06-28 01:23:04,361 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 90 selfloop transitions, 19 changer transitions 0/117 dead transitions. [2024-06-28 01:23:04,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 117 transitions, 998 flow [2024-06-28 01:23:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:23:04,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:23:04,363 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 658 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:23:04,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 117 transitions, 998 flow [2024-06-28 01:23:04,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 943 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:04,371 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 674 flow [2024-06-28 01:23:04,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=674, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-06-28 01:23:04,372 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-06-28 01:23:04,372 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 674 flow [2024-06-28 01:23:04,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:04,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:04,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:04,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:23:04,373 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:04,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1215856086, now seen corresponding path program 1 times [2024-06-28 01:23:04,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:04,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213018488] [2024-06-28 01:23:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:04,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:05,067 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 01:23:05,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:05,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213018488] [2024-06-28 01:23:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213018488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:05,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:05,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:05,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528303086] [2024-06-28 01:23:05,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:05,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:05,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 674 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:05,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:05,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:05,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:05,488 INFO L124 PetriNetUnfolderBase]: 544/1044 cut-off events. [2024-06-28 01:23:05,488 INFO L125 PetriNetUnfolderBase]: For 5805/5805 co-relation queries the response was YES. [2024-06-28 01:23:05,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 1044 events. 544/1044 cut-off events. For 5805/5805 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5757 event pairs, 130 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 4316. Up to 804 conditions per place. [2024-06-28 01:23:05,500 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 92 selfloop transitions, 20 changer transitions 0/120 dead transitions. [2024-06-28 01:23:05,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 120 transitions, 1028 flow [2024-06-28 01:23:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:23:05,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:23:05,502 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 674 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:23:05,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 120 transitions, 1028 flow [2024-06-28 01:23:05,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 973 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:05,510 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 703 flow [2024-06-28 01:23:05,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=703, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-06-28 01:23:05,510 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-06-28 01:23:05,511 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 703 flow [2024-06-28 01:23:05,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:05,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:05,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:05,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:23:05,511 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:05,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1854402274, now seen corresponding path program 3 times [2024-06-28 01:23:05,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:05,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023111054] [2024-06-28 01:23:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:05,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:06,385 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 01:23:06,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:06,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023111054] [2024-06-28 01:23:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023111054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:06,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143492524] [2024-06-28 01:23:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:06,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:06,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 703 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:06,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:06,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:06,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:06,832 INFO L124 PetriNetUnfolderBase]: 555/1105 cut-off events. [2024-06-28 01:23:06,833 INFO L125 PetriNetUnfolderBase]: For 6606/6606 co-relation queries the response was YES. [2024-06-28 01:23:06,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 1105 events. 555/1105 cut-off events. For 6606/6606 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6162 event pairs, 121 based on Foata normal form. 1/1066 useless extension candidates. Maximal degree in co-relation 4592. Up to 801 conditions per place. [2024-06-28 01:23:06,839 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 93 selfloop transitions, 22 changer transitions 0/123 dead transitions. [2024-06-28 01:23:06,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 123 transitions, 1079 flow [2024-06-28 01:23:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:23:06,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:23:06,842 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 703 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:23:06,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 123 transitions, 1079 flow [2024-06-28 01:23:06,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 123 transitions, 1017 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:06,859 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 724 flow [2024-06-28 01:23:06,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2024-06-28 01:23:06,859 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2024-06-28 01:23:06,860 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 724 flow [2024-06-28 01:23:06,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:06,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:06,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:06,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:23:06,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:06,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1091265502, now seen corresponding path program 2 times [2024-06-28 01:23:06,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:06,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047412004] [2024-06-28 01:23:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:06,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:07,603 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 01:23:07,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047412004] [2024-06-28 01:23:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047412004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:07,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:07,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:07,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493002932] [2024-06-28 01:23:07,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:07,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:07,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:07,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:07,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:07,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:07,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:07,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:07,955 INFO L124 PetriNetUnfolderBase]: 577/1141 cut-off events. [2024-06-28 01:23:07,956 INFO L125 PetriNetUnfolderBase]: For 7718/7718 co-relation queries the response was YES. [2024-06-28 01:23:07,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4863 conditions, 1141 events. 577/1141 cut-off events. For 7718/7718 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6363 event pairs, 121 based on Foata normal form. 2/1102 useless extension candidates. Maximal degree in co-relation 4820. Up to 824 conditions per place. [2024-06-28 01:23:07,963 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 95 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-28 01:23:07,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 126 transitions, 1116 flow [2024-06-28 01:23:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:23:07,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:23:07,964 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 724 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:23:07,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 126 transitions, 1116 flow [2024-06-28 01:23:07,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 1049 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:07,975 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 755 flow [2024-06-28 01:23:07,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=755, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-06-28 01:23:07,976 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-28 01:23:07,976 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 755 flow [2024-06-28 01:23:07,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:07,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:07,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:23:07,976 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:07,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1082991540, now seen corresponding path program 4 times [2024-06-28 01:23:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830186620] [2024-06-28 01:23:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:08,801 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 01:23:08,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:08,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830186620] [2024-06-28 01:23:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830186620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:08,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:08,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544845336] [2024-06-28 01:23:08,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:08,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:08,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:08,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 755 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:08,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:08,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:08,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:09,142 INFO L124 PetriNetUnfolderBase]: 578/1141 cut-off events. [2024-06-28 01:23:09,142 INFO L125 PetriNetUnfolderBase]: For 8216/8216 co-relation queries the response was YES. [2024-06-28 01:23:09,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 1141 events. 578/1141 cut-off events. For 8216/8216 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6404 event pairs, 120 based on Foata normal form. 1/1103 useless extension candidates. Maximal degree in co-relation 4919. Up to 771 conditions per place. [2024-06-28 01:23:09,149 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 89 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-28 01:23:09,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 127 transitions, 1135 flow [2024-06-28 01:23:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:23:09,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:23:09,151 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 755 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:23:09,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 127 transitions, 1135 flow [2024-06-28 01:23:09,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 1059 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:09,162 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 784 flow [2024-06-28 01:23:09,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2024-06-28 01:23:09,163 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2024-06-28 01:23:09,163 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 784 flow [2024-06-28 01:23:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:09,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:09,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:09,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:23:09,164 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:09,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:09,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1846127816, now seen corresponding path program 3 times [2024-06-28 01:23:09,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:09,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006201399] [2024-06-28 01:23:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:09,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:09,772 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 01:23:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006201399] [2024-06-28 01:23:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006201399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058451868] [2024-06-28 01:23:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:09,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:09,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 784 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:09,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:09,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:09,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:10,130 INFO L124 PetriNetUnfolderBase]: 632/1255 cut-off events. [2024-06-28 01:23:10,130 INFO L125 PetriNetUnfolderBase]: For 10045/10045 co-relation queries the response was YES. [2024-06-28 01:23:10,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 1255 events. 632/1255 cut-off events. For 10045/10045 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7267 event pairs, 125 based on Foata normal form. 2/1207 useless extension candidates. Maximal degree in co-relation 5463. Up to 733 conditions per place. [2024-06-28 01:23:10,138 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 93 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2024-06-28 01:23:10,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 138 transitions, 1322 flow [2024-06-28 01:23:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 01:23:10,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:23:10,139 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 784 flow. Second operand 8 states and 152 transitions. [2024-06-28 01:23:10,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 138 transitions, 1322 flow [2024-06-28 01:23:10,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 138 transitions, 1233 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:10,155 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 894 flow [2024-06-28 01:23:10,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=894, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-06-28 01:23:10,156 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 63 predicate places. [2024-06-28 01:23:10,156 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 894 flow [2024-06-28 01:23:10,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:10,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:10,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:10,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:23:10,158 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:10,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1845831146, now seen corresponding path program 4 times [2024-06-28 01:23:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:10,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499305244] [2024-06-28 01:23:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:10,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:10,823 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 01:23:10,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:10,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499305244] [2024-06-28 01:23:10,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499305244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:10,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:10,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:10,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405917959] [2024-06-28 01:23:10,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:10,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:10,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:10,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:10,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:10,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:10,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 894 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:10,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:10,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:11,285 INFO L124 PetriNetUnfolderBase]: 630/1226 cut-off events. [2024-06-28 01:23:11,285 INFO L125 PetriNetUnfolderBase]: For 10525/10525 co-relation queries the response was YES. [2024-06-28 01:23:11,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5647 conditions, 1226 events. 630/1226 cut-off events. For 10525/10525 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7082 event pairs, 141 based on Foata normal form. 1/1183 useless extension candidates. Maximal degree in co-relation 5600. Up to 981 conditions per place. [2024-06-28 01:23:11,294 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 114 selfloop transitions, 13 changer transitions 0/135 dead transitions. [2024-06-28 01:23:11,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 135 transitions, 1258 flow [2024-06-28 01:23:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:23:11,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:23:11,296 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 894 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:23:11,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 135 transitions, 1258 flow [2024-06-28 01:23:11,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 135 transitions, 1214 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 01:23:11,315 INFO L231 Difference]: Finished difference. Result has 109 places, 110 transitions, 909 flow [2024-06-28 01:23:11,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=909, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2024-06-28 01:23:11,315 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-06-28 01:23:11,315 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 909 flow [2024-06-28 01:23:11,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:11,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:11,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:11,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:23:11,316 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:11,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:11,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1845820234, now seen corresponding path program 1 times [2024-06-28 01:23:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:11,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184284704] [2024-06-28 01:23:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:11,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:12,227 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 01:23:12,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:12,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184284704] [2024-06-28 01:23:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184284704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:12,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:12,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041332711] [2024-06-28 01:23:12,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:12,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:12,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:12,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:12,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 909 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:12,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:12,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:12,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:12,694 INFO L124 PetriNetUnfolderBase]: 631/1216 cut-off events. [2024-06-28 01:23:12,694 INFO L125 PetriNetUnfolderBase]: For 10332/10332 co-relation queries the response was YES. [2024-06-28 01:23:12,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 1216 events. 631/1216 cut-off events. For 10332/10332 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6955 event pairs, 141 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 5535. Up to 962 conditions per place. [2024-06-28 01:23:12,701 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 120 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2024-06-28 01:23:12,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 1293 flow [2024-06-28 01:23:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:23:12,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-28 01:23:12,703 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 909 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:23:12,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 1293 flow [2024-06-28 01:23:12,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 142 transitions, 1256 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:12,723 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 916 flow [2024-06-28 01:23:12,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=916, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-06-28 01:23:12,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-06-28 01:23:12,724 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 916 flow [2024-06-28 01:23:12,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:12,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:12,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:12,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:23:12,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:12,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1762582856, now seen corresponding path program 1 times [2024-06-28 01:23:12,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:12,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106853175] [2024-06-28 01:23:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:13,312 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 01:23:13,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106853175] [2024-06-28 01:23:13,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106853175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:13,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:13,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:13,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857454911] [2024-06-28 01:23:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:13,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:13,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:13,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 916 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:13,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:13,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:13,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:13,744 INFO L124 PetriNetUnfolderBase]: 647/1267 cut-off events. [2024-06-28 01:23:13,744 INFO L125 PetriNetUnfolderBase]: For 11082/11082 co-relation queries the response was YES. [2024-06-28 01:23:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5741 conditions, 1267 events. 647/1267 cut-off events. For 11082/11082 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7366 event pairs, 111 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 5691. Up to 951 conditions per place. [2024-06-28 01:23:13,752 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 108 selfloop transitions, 24 changer transitions 0/140 dead transitions. [2024-06-28 01:23:13,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 140 transitions, 1280 flow [2024-06-28 01:23:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:23:13,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:23:13,754 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 916 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:23:13,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 140 transitions, 1280 flow [2024-06-28 01:23:13,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 140 transitions, 1246 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:13,774 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 967 flow [2024-06-28 01:23:13,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=967, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2024-06-28 01:23:13,774 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 74 predicate places. [2024-06-28 01:23:13,774 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 967 flow [2024-06-28 01:23:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:13,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:13,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:13,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:23:13,775 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:13,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash -968743798, now seen corresponding path program 2 times [2024-06-28 01:23:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:13,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919110274] [2024-06-28 01:23:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:13,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:14,460 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 01:23:14,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919110274] [2024-06-28 01:23:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919110274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:14,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:14,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:14,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240195057] [2024-06-28 01:23:14,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:14,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:14,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:14,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:14,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:14,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:14,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:14,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:14,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:14,974 INFO L124 PetriNetUnfolderBase]: 693/1352 cut-off events. [2024-06-28 01:23:14,975 INFO L125 PetriNetUnfolderBase]: For 12642/12642 co-relation queries the response was YES. [2024-06-28 01:23:14,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1352 events. 693/1352 cut-off events. For 12642/12642 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8004 event pairs, 172 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 6180. Up to 1038 conditions per place. [2024-06-28 01:23:14,983 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 109 selfloop transitions, 37 changer transitions 0/154 dead transitions. [2024-06-28 01:23:14,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 154 transitions, 1531 flow [2024-06-28 01:23:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:23:14,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-28 01:23:14,984 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 967 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:23:14,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 154 transitions, 1531 flow [2024-06-28 01:23:15,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 154 transitions, 1457 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:15,003 INFO L231 Difference]: Finished difference. Result has 121 places, 130 transitions, 1204 flow [2024-06-28 01:23:15,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1204, PETRI_PLACES=121, PETRI_TRANSITIONS=130} [2024-06-28 01:23:15,004 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2024-06-28 01:23:15,004 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 130 transitions, 1204 flow [2024-06-28 01:23:15,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:15,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:23:15,005 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:15,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2055292328, now seen corresponding path program 3 times [2024-06-28 01:23:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452394935] [2024-06-28 01:23:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:15,602 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 01:23:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452394935] [2024-06-28 01:23:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452394935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501565540] [2024-06-28 01:23:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:15,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:15,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:15,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 130 transitions, 1204 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:15,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:15,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:15,963 INFO L124 PetriNetUnfolderBase]: 709/1388 cut-off events. [2024-06-28 01:23:15,963 INFO L125 PetriNetUnfolderBase]: For 13615/13615 co-relation queries the response was YES. [2024-06-28 01:23:15,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6515 conditions, 1388 events. 709/1388 cut-off events. For 13615/13615 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8304 event pairs, 169 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 6459. Up to 1090 conditions per place. [2024-06-28 01:23:15,972 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 131 selfloop transitions, 21 changer transitions 0/160 dead transitions. [2024-06-28 01:23:15,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 160 transitions, 1632 flow [2024-06-28 01:23:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:23:15,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:23:15,974 INFO L175 Difference]: Start difference. First operand has 121 places, 130 transitions, 1204 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:23:15,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 160 transitions, 1632 flow [2024-06-28 01:23:15,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 160 transitions, 1595 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 01:23:15,996 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 1250 flow [2024-06-28 01:23:15,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1250, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2024-06-28 01:23:15,997 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2024-06-28 01:23:15,997 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 1250 flow [2024-06-28 01:23:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:23:15,998 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:15,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1660300910, now seen corresponding path program 1 times [2024-06-28 01:23:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266704801] [2024-06-28 01:23:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:16,717 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 01:23:16,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266704801] [2024-06-28 01:23:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266704801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:16,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827898066] [2024-06-28 01:23:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:16,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:16,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:16,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 1250 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:16,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:16,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:16,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:17,222 INFO L124 PetriNetUnfolderBase]: 720/1426 cut-off events. [2024-06-28 01:23:17,223 INFO L125 PetriNetUnfolderBase]: For 14548/14548 co-relation queries the response was YES. [2024-06-28 01:23:17,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 1426 events. 720/1426 cut-off events. For 14548/14548 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8604 event pairs, 142 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 6633. Up to 1053 conditions per place. [2024-06-28 01:23:17,231 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 114 selfloop transitions, 44 changer transitions 0/166 dead transitions. [2024-06-28 01:23:17,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 166 transitions, 1712 flow [2024-06-28 01:23:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:23:17,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-06-28 01:23:17,233 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 1250 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:23:17,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 166 transitions, 1712 flow [2024-06-28 01:23:17,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 166 transitions, 1660 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:17,254 INFO L231 Difference]: Finished difference. Result has 132 places, 135 transitions, 1333 flow [2024-06-28 01:23:17,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=132, PETRI_TRANSITIONS=135} [2024-06-28 01:23:17,255 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 92 predicate places. [2024-06-28 01:23:17,255 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 135 transitions, 1333 flow [2024-06-28 01:23:17,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:17,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:17,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:17,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:23:17,256 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:17,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:17,256 INFO L85 PathProgramCache]: Analyzing trace with hash -963166216, now seen corresponding path program 2 times [2024-06-28 01:23:17,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:17,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673882321] [2024-06-28 01:23:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:17,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:18,058 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 01:23:18,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:18,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673882321] [2024-06-28 01:23:18,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673882321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:18,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:18,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:18,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764605192] [2024-06-28 01:23:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:18,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:18,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:18,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:18,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:18,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 135 transitions, 1333 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:18,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:18,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:18,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:18,567 INFO L124 PetriNetUnfolderBase]: 795/1534 cut-off events. [2024-06-28 01:23:18,567 INFO L125 PetriNetUnfolderBase]: For 19659/19659 co-relation queries the response was YES. [2024-06-28 01:23:18,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 1534 events. 795/1534 cut-off events. For 19659/19659 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9340 event pairs, 142 based on Foata normal form. 2/1490 useless extension candidates. Maximal degree in co-relation 7751. Up to 1112 conditions per place. [2024-06-28 01:23:18,576 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 135 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-28 01:23:18,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 176 transitions, 1982 flow [2024-06-28 01:23:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:23:18,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-28 01:23:18,577 INFO L175 Difference]: Start difference. First operand has 132 places, 135 transitions, 1333 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:23:18,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 176 transitions, 1982 flow [2024-06-28 01:23:18,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 176 transitions, 1863 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:18,605 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 1444 flow [2024-06-28 01:23:18,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1444, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2024-06-28 01:23:18,606 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 95 predicate places. [2024-06-28 01:23:18,606 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 1444 flow [2024-06-28 01:23:18,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:18,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:18,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:18,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:23:18,607 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:18,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash -963165937, now seen corresponding path program 1 times [2024-06-28 01:23:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:18,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710883574] [2024-06-28 01:23:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:19,501 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 01:23:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710883574] [2024-06-28 01:23:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710883574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:19,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:19,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:19,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535106010] [2024-06-28 01:23:19,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:19,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:19,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:19,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:19,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:19,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 1444 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:19,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:19,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:19,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:20,020 INFO L124 PetriNetUnfolderBase]: 790/1527 cut-off events. [2024-06-28 01:23:20,021 INFO L125 PetriNetUnfolderBase]: For 20423/20423 co-relation queries the response was YES. [2024-06-28 01:23:20,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7855 conditions, 1527 events. 790/1527 cut-off events. For 20423/20423 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9254 event pairs, 154 based on Foata normal form. 2/1482 useless extension candidates. Maximal degree in co-relation 7793. Up to 1171 conditions per place. [2024-06-28 01:23:20,032 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 138 selfloop transitions, 28 changer transitions 0/174 dead transitions. [2024-06-28 01:23:20,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 174 transitions, 1890 flow [2024-06-28 01:23:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:23:20,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030864197530864 [2024-06-28 01:23:20,034 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 1444 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:23:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 174 transitions, 1890 flow [2024-06-28 01:23:20,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 174 transitions, 1811 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:20,066 INFO L231 Difference]: Finished difference. Result has 139 places, 143 transitions, 1427 flow [2024-06-28 01:23:20,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=139, PETRI_TRANSITIONS=143} [2024-06-28 01:23:20,066 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2024-06-28 01:23:20,067 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 143 transitions, 1427 flow [2024-06-28 01:23:20,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:20,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:20,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:20,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:23:20,067 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:20,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1776687620, now seen corresponding path program 3 times [2024-06-28 01:23:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:20,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068492478] [2024-06-28 01:23:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:20,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:21,239 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 01:23:21,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:21,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068492478] [2024-06-28 01:23:21,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068492478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:21,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:21,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775305850] [2024-06-28 01:23:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:21,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:21,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:21,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 143 transitions, 1427 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:21,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:21,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:21,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:21,956 INFO L124 PetriNetUnfolderBase]: 788/1533 cut-off events. [2024-06-28 01:23:21,956 INFO L125 PetriNetUnfolderBase]: For 18739/18739 co-relation queries the response was YES. [2024-06-28 01:23:21,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7723 conditions, 1533 events. 788/1533 cut-off events. For 18739/18739 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9351 event pairs, 149 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 7659. Up to 1055 conditions per place. [2024-06-28 01:23:21,965 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 115 selfloop transitions, 53 changer transitions 0/176 dead transitions. [2024-06-28 01:23:21,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 176 transitions, 1921 flow [2024-06-28 01:23:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:23:21,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-28 01:23:21,967 INFO L175 Difference]: Start difference. First operand has 139 places, 143 transitions, 1427 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:23:21,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 176 transitions, 1921 flow [2024-06-28 01:23:22,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 176 transitions, 1837 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:22,003 INFO L231 Difference]: Finished difference. Result has 142 places, 146 transitions, 1516 flow [2024-06-28 01:23:22,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1516, PETRI_PLACES=142, PETRI_TRANSITIONS=146} [2024-06-28 01:23:22,004 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 102 predicate places. [2024-06-28 01:23:22,004 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 146 transitions, 1516 flow [2024-06-28 01:23:22,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:22,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:22,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:23:22,005 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:22,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:22,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1562006150, now seen corresponding path program 4 times [2024-06-28 01:23:22,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481646331] [2024-06-28 01:23:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:22,564 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 01:23:22,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:22,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481646331] [2024-06-28 01:23:22,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481646331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:22,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:22,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:22,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989004857] [2024-06-28 01:23:22,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:22,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:22,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:22,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:22,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 146 transitions, 1516 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:22,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:22,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:22,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:22,945 INFO L124 PetriNetUnfolderBase]: 804/1547 cut-off events. [2024-06-28 01:23:22,945 INFO L125 PetriNetUnfolderBase]: For 20057/20057 co-relation queries the response was YES. [2024-06-28 01:23:22,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7963 conditions, 1547 events. 804/1547 cut-off events. For 20057/20057 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9372 event pairs, 137 based on Foata normal form. 2/1498 useless extension candidates. Maximal degree in co-relation 7897. Up to 1209 conditions per place. [2024-06-28 01:23:22,955 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 143 selfloop transitions, 24 changer transitions 0/175 dead transitions. [2024-06-28 01:23:22,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 175 transitions, 1978 flow [2024-06-28 01:23:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:23:22,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:23:22,957 INFO L175 Difference]: Start difference. First operand has 142 places, 146 transitions, 1516 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:23:22,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 175 transitions, 1978 flow [2024-06-28 01:23:22,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 175 transitions, 1843 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:22,992 INFO L231 Difference]: Finished difference. Result has 144 places, 148 transitions, 1461 flow [2024-06-28 01:23:22,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1461, PETRI_PLACES=144, PETRI_TRANSITIONS=148} [2024-06-28 01:23:22,993 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 104 predicate places. [2024-06-28 01:23:22,993 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 148 transitions, 1461 flow [2024-06-28 01:23:22,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:22,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:22,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:22,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:23:22,993 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:22,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash 787001658, now seen corresponding path program 4 times [2024-06-28 01:23:22,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:22,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783161333] [2024-06-28 01:23:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:23,905 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 01:23:23,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:23,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783161333] [2024-06-28 01:23:23,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783161333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:23,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:23,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:23,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286033940] [2024-06-28 01:23:23,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:23,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:23,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:23,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:23,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:23,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:23,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 148 transitions, 1461 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:23,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:23,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:23,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:24,463 INFO L124 PetriNetUnfolderBase]: 831/1618 cut-off events. [2024-06-28 01:23:24,463 INFO L125 PetriNetUnfolderBase]: For 21817/21817 co-relation queries the response was YES. [2024-06-28 01:23:24,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8283 conditions, 1618 events. 831/1618 cut-off events. For 21817/21817 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9992 event pairs, 132 based on Foata normal form. 1/1562 useless extension candidates. Maximal degree in co-relation 8216. Up to 1028 conditions per place. [2024-06-28 01:23:24,474 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 132 selfloop transitions, 49 changer transitions 0/189 dead transitions. [2024-06-28 01:23:24,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 189 transitions, 2232 flow [2024-06-28 01:23:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:23:24,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-28 01:23:24,475 INFO L175 Difference]: Start difference. First operand has 144 places, 148 transitions, 1461 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:23:24,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 189 transitions, 2232 flow [2024-06-28 01:23:24,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 189 transitions, 2154 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:24,513 INFO L231 Difference]: Finished difference. Result has 147 places, 156 transitions, 1668 flow [2024-06-28 01:23:24,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1668, PETRI_PLACES=147, PETRI_TRANSITIONS=156} [2024-06-28 01:23:24,514 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 107 predicate places. [2024-06-28 01:23:24,514 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 156 transitions, 1668 flow [2024-06-28 01:23:24,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:24,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:24,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:24,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:23:24,514 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:24,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1395386666, now seen corresponding path program 5 times [2024-06-28 01:23:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066389072] [2024-06-28 01:23:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:25,275 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 01:23:25,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:25,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066389072] [2024-06-28 01:23:25,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066389072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:25,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:25,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014150444] [2024-06-28 01:23:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:25,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:25,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:25,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:25,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:25,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 156 transitions, 1668 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:25,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:25,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:25,736 INFO L124 PetriNetUnfolderBase]: 892/1670 cut-off events. [2024-06-28 01:23:25,736 INFO L125 PetriNetUnfolderBase]: For 27624/27624 co-relation queries the response was YES. [2024-06-28 01:23:25,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9370 conditions, 1670 events. 892/1670 cut-off events. For 27624/27624 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10069 event pairs, 120 based on Foata normal form. 2/1636 useless extension candidates. Maximal degree in co-relation 9302. Up to 933 conditions per place. [2024-06-28 01:23:25,748 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 131 selfloop transitions, 61 changer transitions 0/200 dead transitions. [2024-06-28 01:23:25,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 200 transitions, 2578 flow [2024-06-28 01:23:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 01:23:25,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339506172839507 [2024-06-28 01:23:25,750 INFO L175 Difference]: Start difference. First operand has 147 places, 156 transitions, 1668 flow. Second operand 9 states and 173 transitions. [2024-06-28 01:23:25,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 200 transitions, 2578 flow [2024-06-28 01:23:25,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 200 transitions, 2480 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:25,811 INFO L231 Difference]: Finished difference. Result has 153 places, 166 transitions, 1926 flow [2024-06-28 01:23:25,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1926, PETRI_PLACES=153, PETRI_TRANSITIONS=166} [2024-06-28 01:23:25,812 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 113 predicate places. [2024-06-28 01:23:25,812 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 166 transitions, 1926 flow [2024-06-28 01:23:25,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:25,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:25,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:23:25,812 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:25,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash 796532577, now seen corresponding path program 2 times [2024-06-28 01:23:25,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955638730] [2024-06-28 01:23:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:26,911 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 01:23:26,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:26,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955638730] [2024-06-28 01:23:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955638730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:26,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430447022] [2024-06-28 01:23:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:26,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:26,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 166 transitions, 1926 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:26,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:26,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:26,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:27,516 INFO L124 PetriNetUnfolderBase]: 890/1737 cut-off events. [2024-06-28 01:23:27,516 INFO L125 PetriNetUnfolderBase]: For 28826/28826 co-relation queries the response was YES. [2024-06-28 01:23:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9612 conditions, 1737 events. 890/1737 cut-off events. For 28826/28826 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10937 event pairs, 172 based on Foata normal form. 1/1678 useless extension candidates. Maximal degree in co-relation 9542. Up to 1369 conditions per place. [2024-06-28 01:23:27,528 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 167 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2024-06-28 01:23:27,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 191 transitions, 2386 flow [2024-06-28 01:23:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:23:27,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:23:27,529 INFO L175 Difference]: Start difference. First operand has 153 places, 166 transitions, 1926 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:23:27,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 191 transitions, 2386 flow [2024-06-28 01:23:27,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 191 transitions, 2252 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:27,589 INFO L231 Difference]: Finished difference. Result has 158 places, 166 transitions, 1831 flow [2024-06-28 01:23:27,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1831, PETRI_PLACES=158, PETRI_TRANSITIONS=166} [2024-06-28 01:23:27,589 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 118 predicate places. [2024-06-28 01:23:27,589 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 166 transitions, 1831 flow [2024-06-28 01:23:27,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:27,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:27,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:27,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:23:27,590 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:27,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash 530501148, now seen corresponding path program 6 times [2024-06-28 01:23:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:27,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830135647] [2024-06-28 01:23:27,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:28,381 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 01:23:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830135647] [2024-06-28 01:23:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830135647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:28,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29156032] [2024-06-28 01:23:28,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:28,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:28,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:28,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 166 transitions, 1831 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:28,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:28,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:28,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:28,940 INFO L124 PetriNetUnfolderBase]: 914/1747 cut-off events. [2024-06-28 01:23:28,941 INFO L125 PetriNetUnfolderBase]: For 28655/28655 co-relation queries the response was YES. [2024-06-28 01:23:28,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9708 conditions, 1747 events. 914/1747 cut-off events. For 28655/28655 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10918 event pairs, 139 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 9636. Up to 1267 conditions per place. [2024-06-28 01:23:28,954 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 156 selfloop transitions, 39 changer transitions 0/203 dead transitions. [2024-06-28 01:23:28,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 203 transitions, 2573 flow [2024-06-28 01:23:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:23:28,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:23:28,959 INFO L175 Difference]: Start difference. First operand has 158 places, 166 transitions, 1831 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:23:28,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 203 transitions, 2573 flow [2024-06-28 01:23:29,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 203 transitions, 2536 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:29,032 INFO L231 Difference]: Finished difference. Result has 160 places, 170 transitions, 1977 flow [2024-06-28 01:23:29,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1977, PETRI_PLACES=160, PETRI_TRANSITIONS=170} [2024-06-28 01:23:29,033 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 120 predicate places. [2024-06-28 01:23:29,033 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 170 transitions, 1977 flow [2024-06-28 01:23:29,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:29,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:29,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:29,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:23:29,033 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:29,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash -769821452, now seen corresponding path program 7 times [2024-06-28 01:23:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:29,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764248361] [2024-06-28 01:23:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:29,983 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 01:23:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764248361] [2024-06-28 01:23:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764248361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:29,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:29,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015647463] [2024-06-28 01:23:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:29,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:30,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:30,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 170 transitions, 1977 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:30,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:30,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:30,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:30,593 INFO L124 PetriNetUnfolderBase]: 911/1743 cut-off events. [2024-06-28 01:23:30,593 INFO L125 PetriNetUnfolderBase]: For 29511/29511 co-relation queries the response was YES. [2024-06-28 01:23:30,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9760 conditions, 1743 events. 911/1743 cut-off events. For 29511/29511 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10865 event pairs, 139 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 9687. Up to 1266 conditions per place. [2024-06-28 01:23:30,605 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 156 selfloop transitions, 38 changer transitions 0/202 dead transitions. [2024-06-28 01:23:30,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 202 transitions, 2553 flow [2024-06-28 01:23:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:30,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:23:30,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-28 01:23:30,606 INFO L175 Difference]: Start difference. First operand has 160 places, 170 transitions, 1977 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:23:30,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 202 transitions, 2553 flow [2024-06-28 01:23:30,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 202 transitions, 2306 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:30,676 INFO L231 Difference]: Finished difference. Result has 161 places, 170 transitions, 1814 flow [2024-06-28 01:23:30,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1814, PETRI_PLACES=161, PETRI_TRANSITIONS=170} [2024-06-28 01:23:30,676 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 121 predicate places. [2024-06-28 01:23:30,677 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 170 transitions, 1814 flow [2024-06-28 01:23:30,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:30,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:30,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:30,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:23:30,677 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:30,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash 530508867, now seen corresponding path program 3 times [2024-06-28 01:23:30,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:30,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190922338] [2024-06-28 01:23:30,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:30,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:31,405 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 01:23:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:31,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190922338] [2024-06-28 01:23:31,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190922338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:31,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:31,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161737091] [2024-06-28 01:23:31,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:31,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:31,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:31,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 170 transitions, 1814 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:31,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:31,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:31,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:31,939 INFO L124 PetriNetUnfolderBase]: 906/1743 cut-off events. [2024-06-28 01:23:31,939 INFO L125 PetriNetUnfolderBase]: For 25907/25907 co-relation queries the response was YES. [2024-06-28 01:23:31,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9132 conditions, 1743 events. 906/1743 cut-off events. For 25907/25907 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10901 event pairs, 141 based on Foata normal form. 2/1692 useless extension candidates. Maximal degree in co-relation 9060. Up to 1323 conditions per place. [2024-06-28 01:23:31,953 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 162 selfloop transitions, 31 changer transitions 0/201 dead transitions. [2024-06-28 01:23:31,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 201 transitions, 2320 flow [2024-06-28 01:23:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:23:31,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-28 01:23:31,954 INFO L175 Difference]: Start difference. First operand has 161 places, 170 transitions, 1814 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:23:31,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 201 transitions, 2320 flow [2024-06-28 01:23:32,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 201 transitions, 2224 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:32,024 INFO L231 Difference]: Finished difference. Result has 163 places, 170 transitions, 1786 flow [2024-06-28 01:23:32,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1786, PETRI_PLACES=163, PETRI_TRANSITIONS=170} [2024-06-28 01:23:32,025 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 123 predicate places. [2024-06-28 01:23:32,025 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 170 transitions, 1786 flow [2024-06-28 01:23:32,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:32,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:32,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:32,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:23:32,026 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:32,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1386189896, now seen corresponding path program 8 times [2024-06-28 01:23:32,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:32,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616862928] [2024-06-28 01:23:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:32,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:32,819 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 01:23:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616862928] [2024-06-28 01:23:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616862928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:32,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:32,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081747896] [2024-06-28 01:23:32,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:32,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:32,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:32,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:32,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:32,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 170 transitions, 1786 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:32,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:32,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:32,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:33,341 INFO L124 PetriNetUnfolderBase]: 915/1783 cut-off events. [2024-06-28 01:23:33,341 INFO L125 PetriNetUnfolderBase]: For 25567/25567 co-relation queries the response was YES. [2024-06-28 01:23:33,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 1783 events. 915/1783 cut-off events. For 25567/25567 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11300 event pairs, 173 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 9104. Up to 1374 conditions per place. [2024-06-28 01:23:33,354 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 173 selfloop transitions, 22 changer transitions 0/203 dead transitions. [2024-06-28 01:23:33,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 203 transitions, 2400 flow [2024-06-28 01:23:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:23:33,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:23:33,357 INFO L175 Difference]: Start difference. First operand has 163 places, 170 transitions, 1786 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:23:33,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 203 transitions, 2400 flow [2024-06-28 01:23:33,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 203 transitions, 2269 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:33,418 INFO L231 Difference]: Finished difference. Result has 164 places, 172 transitions, 1745 flow [2024-06-28 01:23:33,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1745, PETRI_PLACES=164, PETRI_TRANSITIONS=172} [2024-06-28 01:23:33,418 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 124 predicate places. [2024-06-28 01:23:33,419 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 172 transitions, 1745 flow [2024-06-28 01:23:33,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:33,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:33,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:33,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:23:33,419 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:33,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash -300929912, now seen corresponding path program 5 times [2024-06-28 01:23:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:33,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943031803] [2024-06-28 01:23:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:34,011 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 01:23:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:34,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943031803] [2024-06-28 01:23:34,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943031803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:34,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:34,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198389119] [2024-06-28 01:23:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:34,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:34,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 172 transitions, 1745 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:34,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:34,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:34,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:34,533 INFO L124 PetriNetUnfolderBase]: 962/1892 cut-off events. [2024-06-28 01:23:34,533 INFO L125 PetriNetUnfolderBase]: For 26392/26392 co-relation queries the response was YES. [2024-06-28 01:23:34,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9440 conditions, 1892 events. 962/1892 cut-off events. For 26392/26392 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12204 event pairs, 199 based on Foata normal form. 2/1833 useless extension candidates. Maximal degree in co-relation 9366. Up to 1442 conditions per place. [2024-06-28 01:23:34,548 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 160 selfloop transitions, 48 changer transitions 0/216 dead transitions. [2024-06-28 01:23:34,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 216 transitions, 2389 flow [2024-06-28 01:23:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:23:34,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-28 01:23:34,549 INFO L175 Difference]: Start difference. First operand has 164 places, 172 transitions, 1745 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:23:34,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 216 transitions, 2389 flow [2024-06-28 01:23:34,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 216 transitions, 2315 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:34,623 INFO L231 Difference]: Finished difference. Result has 170 places, 185 transitions, 1958 flow [2024-06-28 01:23:34,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1958, PETRI_PLACES=170, PETRI_TRANSITIONS=185} [2024-06-28 01:23:34,623 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 130 predicate places. [2024-06-28 01:23:34,623 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 185 transitions, 1958 flow [2024-06-28 01:23:34,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:34,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:34,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:34,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:23:34,624 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:34,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1150569488, now seen corresponding path program 6 times [2024-06-28 01:23:34,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338145630] [2024-06-28 01:23:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:34,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:35,152 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 01:23:35,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:35,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338145630] [2024-06-28 01:23:35,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338145630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:35,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:35,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:35,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841895356] [2024-06-28 01:23:35,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:35,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:35,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:35,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:35,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:35,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 185 transitions, 1958 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:35,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:35,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:35,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:35,614 INFO L124 PetriNetUnfolderBase]: 983/1929 cut-off events. [2024-06-28 01:23:35,614 INFO L125 PetriNetUnfolderBase]: For 26477/26477 co-relation queries the response was YES. [2024-06-28 01:23:35,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 1929 events. 983/1929 cut-off events. For 26477/26477 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12548 event pairs, 225 based on Foata normal form. 2/1871 useless extension candidates. Maximal degree in co-relation 9691. Up to 1496 conditions per place. [2024-06-28 01:23:35,629 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 170 selfloop transitions, 36 changer transitions 0/214 dead transitions. [2024-06-28 01:23:35,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 214 transitions, 2501 flow [2024-06-28 01:23:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:23:35,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:23:35,630 INFO L175 Difference]: Start difference. First operand has 170 places, 185 transitions, 1958 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:23:35,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 214 transitions, 2501 flow [2024-06-28 01:23:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 214 transitions, 2380 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:35,700 INFO L231 Difference]: Finished difference. Result has 173 places, 188 transitions, 1970 flow [2024-06-28 01:23:35,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=173, PETRI_TRANSITIONS=188} [2024-06-28 01:23:35,701 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 133 predicate places. [2024-06-28 01:23:35,701 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 188 transitions, 1970 flow [2024-06-28 01:23:35,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:35,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:35,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:35,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:23:35,701 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:35,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash -487603620, now seen corresponding path program 1 times [2024-06-28 01:23:35,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:35,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826584450] [2024-06-28 01:23:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:35,744 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 01:23:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826584450] [2024-06-28 01:23:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826584450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:35,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:35,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:23:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017301070] [2024-06-28 01:23:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:23:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:23:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:23:35,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:23:35,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 188 transitions, 1970 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:35,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:35,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:23:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:35,966 INFO L124 PetriNetUnfolderBase]: 598/1291 cut-off events. [2024-06-28 01:23:35,967 INFO L125 PetriNetUnfolderBase]: For 18855/18863 co-relation queries the response was YES. [2024-06-28 01:23:35,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6410 conditions, 1291 events. 598/1291 cut-off events. For 18855/18863 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7941 event pairs, 117 based on Foata normal form. 88/1331 useless extension candidates. Maximal degree in co-relation 6345. Up to 411 conditions per place. [2024-06-28 01:23:35,975 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 100 selfloop transitions, 58 changer transitions 1/188 dead transitions. [2024-06-28 01:23:35,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 188 transitions, 2281 flow [2024-06-28 01:23:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:23:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:23:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-28 01:23:35,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-28 01:23:35,976 INFO L175 Difference]: Start difference. First operand has 173 places, 188 transitions, 1970 flow. Second operand 4 states and 99 transitions. [2024-06-28 01:23:35,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 188 transitions, 2281 flow [2024-06-28 01:23:36,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 188 transitions, 2067 flow, removed 21 selfloop flow, removed 16 redundant places. [2024-06-28 01:23:36,025 INFO L231 Difference]: Finished difference. Result has 161 places, 168 transitions, 1835 flow [2024-06-28 01:23:36,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1835, PETRI_PLACES=161, PETRI_TRANSITIONS=168} [2024-06-28 01:23:36,025 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 121 predicate places. [2024-06-28 01:23:36,025 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 168 transitions, 1835 flow [2024-06-28 01:23:36,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:36,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:36,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:23:36,026 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:36,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 698768115, now seen corresponding path program 1 times [2024-06-28 01:23:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799299805] [2024-06-28 01:23:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:36,770 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 01:23:36,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:36,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799299805] [2024-06-28 01:23:36,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799299805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:36,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:36,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312726801] [2024-06-28 01:23:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:36,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:36,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 168 transitions, 1835 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:36,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:36,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:37,258 INFO L124 PetriNetUnfolderBase]: 605/1249 cut-off events. [2024-06-28 01:23:37,258 INFO L125 PetriNetUnfolderBase]: For 21908/21908 co-relation queries the response was YES. [2024-06-28 01:23:37,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6324 conditions, 1249 events. 605/1249 cut-off events. For 21908/21908 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7130 event pairs, 71 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 6263. Up to 905 conditions per place. [2024-06-28 01:23:37,267 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 160 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2024-06-28 01:23:37,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 197 transitions, 2329 flow [2024-06-28 01:23:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:23:37,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-28 01:23:37,274 INFO L175 Difference]: Start difference. First operand has 161 places, 168 transitions, 1835 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:23:37,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 197 transitions, 2329 flow [2024-06-28 01:23:37,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 197 transitions, 2258 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:23:37,330 INFO L231 Difference]: Finished difference. Result has 168 places, 169 transitions, 1848 flow [2024-06-28 01:23:37,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=168, PETRI_TRANSITIONS=169} [2024-06-28 01:23:37,331 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 128 predicate places. [2024-06-28 01:23:37,331 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 169 transitions, 1848 flow [2024-06-28 01:23:37,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:37,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:37,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:37,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:23:37,332 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:37,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 893361139, now seen corresponding path program 2 times [2024-06-28 01:23:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707792091] [2024-06-28 01:23:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:38,082 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 01:23:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707792091] [2024-06-28 01:23:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707792091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:38,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:38,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572710534] [2024-06-28 01:23:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:38,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:38,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 169 transitions, 1848 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:38,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:38,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:38,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:38,538 INFO L124 PetriNetUnfolderBase]: 621/1292 cut-off events. [2024-06-28 01:23:38,538 INFO L125 PetriNetUnfolderBase]: For 22362/22362 co-relation queries the response was YES. [2024-06-28 01:23:38,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6532 conditions, 1292 events. 621/1292 cut-off events. For 22362/22362 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7486 event pairs, 130 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 6471. Up to 970 conditions per place. [2024-06-28 01:23:38,548 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 144 selfloop transitions, 40 changer transitions 0/192 dead transitions. [2024-06-28 01:23:38,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 192 transitions, 2310 flow [2024-06-28 01:23:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:23:38,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-28 01:23:38,549 INFO L175 Difference]: Start difference. First operand has 168 places, 169 transitions, 1848 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:23:38,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 192 transitions, 2310 flow [2024-06-28 01:23:38,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 192 transitions, 2242 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:38,602 INFO L231 Difference]: Finished difference. Result has 170 places, 170 transitions, 1882 flow [2024-06-28 01:23:38,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1882, PETRI_PLACES=170, PETRI_TRANSITIONS=170} [2024-06-28 01:23:38,603 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 130 predicate places. [2024-06-28 01:23:38,603 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 170 transitions, 1882 flow [2024-06-28 01:23:38,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:38,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:38,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:23:38,604 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:38,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash 893183509, now seen corresponding path program 3 times [2024-06-28 01:23:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:38,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402068135] [2024-06-28 01:23:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:39,349 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 01:23:39,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:39,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402068135] [2024-06-28 01:23:39,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402068135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:39,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861732394] [2024-06-28 01:23:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:39,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:39,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:39,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:39,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 170 transitions, 1882 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:39,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:39,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:39,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:39,845 INFO L124 PetriNetUnfolderBase]: 637/1320 cut-off events. [2024-06-28 01:23:39,845 INFO L125 PetriNetUnfolderBase]: For 23134/23134 co-relation queries the response was YES. [2024-06-28 01:23:39,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6686 conditions, 1320 events. 637/1320 cut-off events. For 23134/23134 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7658 event pairs, 130 based on Foata normal form. 2/1267 useless extension candidates. Maximal degree in co-relation 6624. Up to 865 conditions per place. [2024-06-28 01:23:39,856 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 145 selfloop transitions, 44 changer transitions 0/197 dead transitions. [2024-06-28 01:23:39,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 197 transitions, 2368 flow [2024-06-28 01:23:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:23:39,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-28 01:23:39,857 INFO L175 Difference]: Start difference. First operand has 170 places, 170 transitions, 1882 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:23:39,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 197 transitions, 2368 flow [2024-06-28 01:23:39,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 197 transitions, 2276 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:39,926 INFO L231 Difference]: Finished difference. Result has 172 places, 171 transitions, 1907 flow [2024-06-28 01:23:39,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1907, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2024-06-28 01:23:39,927 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-28 01:23:39,927 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 1907 flow [2024-06-28 01:23:39,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:39,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:39,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:39,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:23:39,927 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:39,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:39,928 INFO L85 PathProgramCache]: Analyzing trace with hash 206381853, now seen corresponding path program 4 times [2024-06-28 01:23:39,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:39,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519117211] [2024-06-28 01:23:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:41,033 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 01:23:41,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:41,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519117211] [2024-06-28 01:23:41,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519117211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:41,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:41,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724270754] [2024-06-28 01:23:41,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:41,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:41,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:41,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:41,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:41,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 1907 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:41,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:41,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:41,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:41,532 INFO L124 PetriNetUnfolderBase]: 653/1357 cut-off events. [2024-06-28 01:23:41,532 INFO L125 PetriNetUnfolderBase]: For 25337/25337 co-relation queries the response was YES. [2024-06-28 01:23:41,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 1357 events. 653/1357 cut-off events. For 25337/25337 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7994 event pairs, 151 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 6823. Up to 1051 conditions per place. [2024-06-28 01:23:41,541 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 163 selfloop transitions, 21 changer transitions 0/192 dead transitions. [2024-06-28 01:23:41,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 192 transitions, 2367 flow [2024-06-28 01:23:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:23:41,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 01:23:41,544 INFO L175 Difference]: Start difference. First operand has 172 places, 171 transitions, 1907 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:23:41,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 192 transitions, 2367 flow [2024-06-28 01:23:41,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 192 transitions, 2270 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:41,607 INFO L231 Difference]: Finished difference. Result has 174 places, 172 transitions, 1878 flow [2024-06-28 01:23:41,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1878, PETRI_PLACES=174, PETRI_TRANSITIONS=172} [2024-06-28 01:23:41,608 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 134 predicate places. [2024-06-28 01:23:41,608 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 172 transitions, 1878 flow [2024-06-28 01:23:41,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:41,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:41,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:41,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:23:41,608 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:41,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash 200125743, now seen corresponding path program 5 times [2024-06-28 01:23:41,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:41,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514339297] [2024-06-28 01:23:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:41,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:42,458 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 01:23:42,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:42,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514339297] [2024-06-28 01:23:42,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514339297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:42,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:42,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:42,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528106820] [2024-06-28 01:23:42,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:42,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:42,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:42,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:42,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:42,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 172 transitions, 1878 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:42,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:42,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:42,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:42,919 INFO L124 PetriNetUnfolderBase]: 669/1393 cut-off events. [2024-06-28 01:23:42,919 INFO L125 PetriNetUnfolderBase]: For 26209/26209 co-relation queries the response was YES. [2024-06-28 01:23:42,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7002 conditions, 1393 events. 669/1393 cut-off events. For 26209/26209 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8263 event pairs, 159 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 6938. Up to 1089 conditions per place. [2024-06-28 01:23:42,929 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 167 selfloop transitions, 19 changer transitions 0/194 dead transitions. [2024-06-28 01:23:42,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 194 transitions, 2355 flow [2024-06-28 01:23:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:23:42,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-28 01:23:42,930 INFO L175 Difference]: Start difference. First operand has 174 places, 172 transitions, 1878 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:23:42,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 194 transitions, 2355 flow [2024-06-28 01:23:43,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 194 transitions, 2295 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:43,002 INFO L231 Difference]: Finished difference. Result has 177 places, 174 transitions, 1900 flow [2024-06-28 01:23:43,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1900, PETRI_PLACES=177, PETRI_TRANSITIONS=174} [2024-06-28 01:23:43,003 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 137 predicate places. [2024-06-28 01:23:43,003 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 174 transitions, 1900 flow [2024-06-28 01:23:43,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:43,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:43,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:23:43,003 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:43,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -763698251, now seen corresponding path program 6 times [2024-06-28 01:23:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:43,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182849102] [2024-06-28 01:23:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:44,003 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 01:23:44,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:44,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182849102] [2024-06-28 01:23:44,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182849102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:44,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:44,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490311733] [2024-06-28 01:23:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:44,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:44,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:44,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:44,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 174 transitions, 1900 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:44,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:44,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:44,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:44,490 INFO L124 PetriNetUnfolderBase]: 685/1429 cut-off events. [2024-06-28 01:23:44,491 INFO L125 PetriNetUnfolderBase]: For 27475/27475 co-relation queries the response was YES. [2024-06-28 01:23:44,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7148 conditions, 1429 events. 685/1429 cut-off events. For 27475/27475 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8536 event pairs, 150 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 7082. Up to 1054 conditions per place. [2024-06-28 01:23:44,500 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 152 selfloop transitions, 39 changer transitions 0/199 dead transitions. [2024-06-28 01:23:44,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 199 transitions, 2390 flow [2024-06-28 01:23:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:23:44,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-28 01:23:44,501 INFO L175 Difference]: Start difference. First operand has 177 places, 174 transitions, 1900 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:23:44,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 199 transitions, 2390 flow [2024-06-28 01:23:44,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 199 transitions, 2337 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:44,583 INFO L231 Difference]: Finished difference. Result has 180 places, 175 transitions, 1955 flow [2024-06-28 01:23:44,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1955, PETRI_PLACES=180, PETRI_TRANSITIONS=175} [2024-06-28 01:23:44,583 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 140 predicate places. [2024-06-28 01:23:44,584 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 175 transitions, 1955 flow [2024-06-28 01:23:44,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:44,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:44,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:44,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:23:44,584 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:44,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash 893368083, now seen corresponding path program 1 times [2024-06-28 01:23:44,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:44,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738751215] [2024-06-28 01:23:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:44,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:45,610 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 01:23:45,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:45,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738751215] [2024-06-28 01:23:45,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738751215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:45,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:45,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983953456] [2024-06-28 01:23:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:45,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:45,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 175 transitions, 1955 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:45,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:45,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:46,108 INFO L124 PetriNetUnfolderBase]: 683/1428 cut-off events. [2024-06-28 01:23:46,108 INFO L125 PetriNetUnfolderBase]: For 26125/26125 co-relation queries the response was YES. [2024-06-28 01:23:46,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7058 conditions, 1428 events. 683/1428 cut-off events. For 26125/26125 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8544 event pairs, 161 based on Foata normal form. 1/1365 useless extension candidates. Maximal degree in co-relation 6991. Up to 1088 conditions per place. [2024-06-28 01:23:46,117 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 144 selfloop transitions, 43 changer transitions 0/195 dead transitions. [2024-06-28 01:23:46,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 195 transitions, 2403 flow [2024-06-28 01:23:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:23:46,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:23:46,118 INFO L175 Difference]: Start difference. First operand has 180 places, 175 transitions, 1955 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:23:46,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 195 transitions, 2403 flow [2024-06-28 01:23:46,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 195 transitions, 2305 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:46,198 INFO L231 Difference]: Finished difference. Result has 183 places, 175 transitions, 1948 flow [2024-06-28 01:23:46,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1948, PETRI_PLACES=183, PETRI_TRANSITIONS=175} [2024-06-28 01:23:46,199 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-06-28 01:23:46,199 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 175 transitions, 1948 flow [2024-06-28 01:23:46,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:46,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:46,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:46,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:23:46,199 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:46,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash 206388797, now seen corresponding path program 2 times [2024-06-28 01:23:46,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:46,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756052866] [2024-06-28 01:23:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:47,354 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 01:23:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756052866] [2024-06-28 01:23:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756052866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357314648] [2024-06-28 01:23:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:47,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:47,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 175 transitions, 1948 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:47,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:47,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:48,080 INFO L124 PetriNetUnfolderBase]: 736/1523 cut-off events. [2024-06-28 01:23:48,081 INFO L125 PetriNetUnfolderBase]: For 26813/26813 co-relation queries the response was YES. [2024-06-28 01:23:48,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7527 conditions, 1523 events. 736/1523 cut-off events. For 26813/26813 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9202 event pairs, 166 based on Foata normal form. 1/1459 useless extension candidates. Maximal degree in co-relation 7459. Up to 1183 conditions per place. [2024-06-28 01:23:48,090 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 172 selfloop transitions, 36 changer transitions 0/216 dead transitions. [2024-06-28 01:23:48,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 216 transitions, 2713 flow [2024-06-28 01:23:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:23:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:23:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 197 transitions. [2024-06-28 01:23:48,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42094017094017094 [2024-06-28 01:23:48,092 INFO L175 Difference]: Start difference. First operand has 183 places, 175 transitions, 1948 flow. Second operand 13 states and 197 transitions. [2024-06-28 01:23:48,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 216 transitions, 2713 flow [2024-06-28 01:23:48,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 216 transitions, 2473 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 01:23:48,171 INFO L231 Difference]: Finished difference. Result has 191 places, 198 transitions, 2120 flow [2024-06-28 01:23:48,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2120, PETRI_PLACES=191, PETRI_TRANSITIONS=198} [2024-06-28 01:23:48,172 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 151 predicate places. [2024-06-28 01:23:48,172 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 198 transitions, 2120 flow [2024-06-28 01:23:48,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:48,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:48,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:48,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:23:48,172 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 206619437, now seen corresponding path program 3 times [2024-06-28 01:23:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226942332] [2024-06-28 01:23:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:49,358 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 01:23:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226942332] [2024-06-28 01:23:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226942332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:49,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:49,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601705890] [2024-06-28 01:23:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:49,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:49,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:49,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 2120 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:49,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:49,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:49,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:49,911 INFO L124 PetriNetUnfolderBase]: 741/1531 cut-off events. [2024-06-28 01:23:49,912 INFO L125 PetriNetUnfolderBase]: For 27439/27439 co-relation queries the response was YES. [2024-06-28 01:23:49,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 1531 events. 741/1531 cut-off events. For 27439/27439 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9254 event pairs, 165 based on Foata normal form. 1/1467 useless extension candidates. Maximal degree in co-relation 7548. Up to 1143 conditions per place. [2024-06-28 01:23:49,921 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 163 selfloop transitions, 47 changer transitions 0/218 dead transitions. [2024-06-28 01:23:49,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 218 transitions, 2668 flow [2024-06-28 01:23:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:23:49,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:23:49,922 INFO L175 Difference]: Start difference. First operand has 191 places, 198 transitions, 2120 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:23:49,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 218 transitions, 2668 flow [2024-06-28 01:23:50,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 218 transitions, 2605 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:50,003 INFO L231 Difference]: Finished difference. Result has 196 places, 200 transitions, 2207 flow [2024-06-28 01:23:50,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2207, PETRI_PLACES=196, PETRI_TRANSITIONS=200} [2024-06-28 01:23:50,003 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 156 predicate places. [2024-06-28 01:23:50,003 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 200 transitions, 2207 flow [2024-06-28 01:23:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:50,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:50,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:50,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:23:50,004 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:50,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash -757018247, now seen corresponding path program 1 times [2024-06-28 01:23:50,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:50,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539232336] [2024-06-28 01:23:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:50,848 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 01:23:50,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539232336] [2024-06-28 01:23:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539232336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104396494] [2024-06-28 01:23:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:50,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:50,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:50,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 200 transitions, 2207 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:50,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:50,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:50,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:51,423 INFO L124 PetriNetUnfolderBase]: 825/1739 cut-off events. [2024-06-28 01:23:51,423 INFO L125 PetriNetUnfolderBase]: For 41602/41602 co-relation queries the response was YES. [2024-06-28 01:23:51,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8525 conditions, 1739 events. 825/1739 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10958 event pairs, 201 based on Foata normal form. 12/1674 useless extension candidates. Maximal degree in co-relation 8451. Up to 1162 conditions per place. [2024-06-28 01:23:51,436 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 180 selfloop transitions, 37 changer transitions 0/225 dead transitions. [2024-06-28 01:23:51,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 225 transitions, 2799 flow [2024-06-28 01:23:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:23:51,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-28 01:23:51,437 INFO L175 Difference]: Start difference. First operand has 196 places, 200 transitions, 2207 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:23:51,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 225 transitions, 2799 flow [2024-06-28 01:23:51,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 225 transitions, 2667 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:51,556 INFO L231 Difference]: Finished difference. Result has 197 places, 201 transitions, 2172 flow [2024-06-28 01:23:51,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2172, PETRI_PLACES=197, PETRI_TRANSITIONS=201} [2024-06-28 01:23:51,556 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 157 predicate places. [2024-06-28 01:23:51,557 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 201 transitions, 2172 flow [2024-06-28 01:23:51,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:51,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:51,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:51,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:23:51,558 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:51,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash -949470615, now seen corresponding path program 7 times [2024-06-28 01:23:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:51,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418339412] [2024-06-28 01:23:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:51,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:52,405 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 01:23:52,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:52,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418339412] [2024-06-28 01:23:52,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418339412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:52,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:52,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:52,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484568959] [2024-06-28 01:23:52,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:52,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:52,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:52,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 201 transitions, 2172 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:52,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:52,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:52,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:52,898 INFO L124 PetriNetUnfolderBase]: 841/1777 cut-off events. [2024-06-28 01:23:52,899 INFO L125 PetriNetUnfolderBase]: For 33102/33102 co-relation queries the response was YES. [2024-06-28 01:23:52,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8712 conditions, 1777 events. 841/1777 cut-off events. For 33102/33102 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11356 event pairs, 207 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 8637. Up to 1311 conditions per place. [2024-06-28 01:23:52,912 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 168 selfloop transitions, 44 changer transitions 0/220 dead transitions. [2024-06-28 01:23:52,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 220 transitions, 2700 flow [2024-06-28 01:23:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:23:52,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 01:23:52,914 INFO L175 Difference]: Start difference. First operand has 197 places, 201 transitions, 2172 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:23:52,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 220 transitions, 2700 flow [2024-06-28 01:23:53,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 220 transitions, 2629 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:53,029 INFO L231 Difference]: Finished difference. Result has 199 places, 202 transitions, 2221 flow [2024-06-28 01:23:53,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2221, PETRI_PLACES=199, PETRI_TRANSITIONS=202} [2024-06-28 01:23:53,029 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-06-28 01:23:53,029 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 202 transitions, 2221 flow [2024-06-28 01:23:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:53,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:53,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:53,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:23:53,030 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash -734339479, now seen corresponding path program 8 times [2024-06-28 01:23:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243865586] [2024-06-28 01:23:53,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:53,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:54,031 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 01:23:54,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:54,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243865586] [2024-06-28 01:23:54,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243865586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:54,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:54,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:54,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731558444] [2024-06-28 01:23:54,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:54,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:54,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:54,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:54,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:54,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 202 transitions, 2221 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:54,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:54,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:54,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:54,583 INFO L124 PetriNetUnfolderBase]: 857/1813 cut-off events. [2024-06-28 01:23:54,583 INFO L125 PetriNetUnfolderBase]: For 35259/35259 co-relation queries the response was YES. [2024-06-28 01:23:54,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9011 conditions, 1813 events. 857/1813 cut-off events. For 35259/35259 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11630 event pairs, 210 based on Foata normal form. 2/1729 useless extension candidates. Maximal degree in co-relation 8935. Up to 1387 conditions per place. [2024-06-28 01:23:54,597 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 181 selfloop transitions, 32 changer transitions 0/221 dead transitions. [2024-06-28 01:23:54,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 221 transitions, 2753 flow [2024-06-28 01:23:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:23:54,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 01:23:54,598 INFO L175 Difference]: Start difference. First operand has 199 places, 202 transitions, 2221 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:23:54,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 221 transitions, 2753 flow [2024-06-28 01:23:54,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 221 transitions, 2643 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:54,708 INFO L231 Difference]: Finished difference. Result has 201 places, 203 transitions, 2209 flow [2024-06-28 01:23:54,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2209, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2024-06-28 01:23:54,708 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 161 predicate places. [2024-06-28 01:23:54,708 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 2209 flow [2024-06-28 01:23:54,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:54,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:54,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:54,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:23:54,709 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:54,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash 324612463, now seen corresponding path program 9 times [2024-06-28 01:23:54,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:54,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180742439] [2024-06-28 01:23:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:54,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:55,661 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 01:23:55,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180742439] [2024-06-28 01:23:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180742439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:55,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:55,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:55,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907895938] [2024-06-28 01:23:55,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:55,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:55,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:55,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:55,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:56,190 INFO L124 PetriNetUnfolderBase]: 873/1849 cut-off events. [2024-06-28 01:23:56,190 INFO L125 PetriNetUnfolderBase]: For 36586/36586 co-relation queries the response was YES. [2024-06-28 01:23:56,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9115 conditions, 1849 events. 873/1849 cut-off events. For 36586/36586 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11930 event pairs, 217 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 9038. Up to 1385 conditions per place. [2024-06-28 01:23:56,205 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 164 selfloop transitions, 51 changer transitions 0/223 dead transitions. [2024-06-28 01:23:56,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 223 transitions, 2758 flow [2024-06-28 01:23:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:23:56,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 01:23:56,206 INFO L175 Difference]: Start difference. First operand has 201 places, 203 transitions, 2209 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:23:56,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 223 transitions, 2758 flow [2024-06-28 01:23:56,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 223 transitions, 2668 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:56,332 INFO L231 Difference]: Finished difference. Result has 204 places, 205 transitions, 2273 flow [2024-06-28 01:23:56,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2273, PETRI_PLACES=204, PETRI_TRANSITIONS=205} [2024-06-28 01:23:56,333 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 164 predicate places. [2024-06-28 01:23:56,335 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 205 transitions, 2273 flow [2024-06-28 01:23:56,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:56,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:56,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:56,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:23:56,336 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:56,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash 324434833, now seen corresponding path program 10 times [2024-06-28 01:23:56,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:56,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669958753] [2024-06-28 01:23:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:56,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:57,256 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 01:23:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669958753] [2024-06-28 01:23:57,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669958753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:57,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275596238] [2024-06-28 01:23:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:57,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:57,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:57,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:57,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 205 transitions, 2273 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:57,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:57,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:57,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:57,792 INFO L124 PetriNetUnfolderBase]: 874/1852 cut-off events. [2024-06-28 01:23:57,793 INFO L125 PetriNetUnfolderBase]: For 34644/34644 co-relation queries the response was YES. [2024-06-28 01:23:57,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8984 conditions, 1852 events. 874/1852 cut-off events. For 34644/34644 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11989 event pairs, 210 based on Foata normal form. 2/1766 useless extension candidates. Maximal degree in co-relation 8905. Up to 1365 conditions per place. [2024-06-28 01:23:57,807 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 170 selfloop transitions, 50 changer transitions 0/228 dead transitions. [2024-06-28 01:23:57,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 228 transitions, 2835 flow [2024-06-28 01:23:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:23:57,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:23:57,811 INFO L175 Difference]: Start difference. First operand has 204 places, 205 transitions, 2273 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:23:57,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 228 transitions, 2835 flow [2024-06-28 01:23:57,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 228 transitions, 2710 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:57,946 INFO L231 Difference]: Finished difference. Result has 207 places, 206 transitions, 2286 flow [2024-06-28 01:23:57,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2286, PETRI_PLACES=207, PETRI_TRANSITIONS=206} [2024-06-28 01:23:57,946 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2024-06-28 01:23:57,946 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 206 transitions, 2286 flow [2024-06-28 01:23:57,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:57,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:57,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:23:57,947 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:57,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash -12084745, now seen corresponding path program 2 times [2024-06-28 01:23:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846115570] [2024-06-28 01:23:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:58,780 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 01:23:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846115570] [2024-06-28 01:23:58,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846115570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:58,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:58,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650597654] [2024-06-28 01:23:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:58,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:23:58,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 206 transitions, 2286 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:58,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:58,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:23:58,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:59,309 INFO L124 PetriNetUnfolderBase]: 890/1896 cut-off events. [2024-06-28 01:23:59,309 INFO L125 PetriNetUnfolderBase]: For 34898/34898 co-relation queries the response was YES. [2024-06-28 01:23:59,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1896 events. 890/1896 cut-off events. For 34898/34898 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12401 event pairs, 251 based on Foata normal form. 2/1805 useless extension candidates. Maximal degree in co-relation 8947. Up to 1479 conditions per place. [2024-06-28 01:23:59,325 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 201 selfloop transitions, 16 changer transitions 0/225 dead transitions. [2024-06-28 01:23:59,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 225 transitions, 2814 flow [2024-06-28 01:23:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:23:59,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-28 01:23:59,326 INFO L175 Difference]: Start difference. First operand has 207 places, 206 transitions, 2286 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:23:59,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 225 transitions, 2814 flow [2024-06-28 01:23:59,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 225 transitions, 2686 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:59,439 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 2212 flow [2024-06-28 01:23:59,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2212, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2024-06-28 01:23:59,440 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 169 predicate places. [2024-06-28 01:23:59,440 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 2212 flow [2024-06-28 01:23:59,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:59,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:59,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:23:59,441 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:59,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash 331114837, now seen corresponding path program 3 times [2024-06-28 01:23:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:59,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064586904] [2024-06-28 01:23:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:00,468 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 01:24:00,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:00,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064586904] [2024-06-28 01:24:00,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064586904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:00,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:00,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219929180] [2024-06-28 01:24:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:00,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:00,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:00,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 2212 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:00,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:00,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:00,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:01,102 INFO L124 PetriNetUnfolderBase]: 958/2067 cut-off events. [2024-06-28 01:24:01,102 INFO L125 PetriNetUnfolderBase]: For 46422/46422 co-relation queries the response was YES. [2024-06-28 01:24:01,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9486 conditions, 2067 events. 958/2067 cut-off events. For 46422/46422 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13874 event pairs, 267 based on Foata normal form. 10/1974 useless extension candidates. Maximal degree in co-relation 9405. Up to 1413 conditions per place. [2024-06-28 01:24:01,117 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 165 selfloop transitions, 58 changer transitions 0/231 dead transitions. [2024-06-28 01:24:01,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 231 transitions, 2806 flow [2024-06-28 01:24:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:24:01,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:24:01,119 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 2212 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:24:01,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 231 transitions, 2806 flow [2024-06-28 01:24:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 231 transitions, 2762 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:01,230 INFO L231 Difference]: Finished difference. Result has 212 places, 208 transitions, 2309 flow [2024-06-28 01:24:01,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2309, PETRI_PLACES=212, PETRI_TRANSITIONS=208} [2024-06-28 01:24:01,230 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 172 predicate places. [2024-06-28 01:24:01,230 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 208 transitions, 2309 flow [2024-06-28 01:24:01,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:01,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:01,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:01,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:24:01,231 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:01,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -941189461, now seen corresponding path program 4 times [2024-06-28 01:24:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:01,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734276817] [2024-06-28 01:24:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:02,376 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 01:24:02,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:02,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734276817] [2024-06-28 01:24:02,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734276817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:02,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:02,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:02,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265349620] [2024-06-28 01:24:02,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:02,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:02,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:02,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:02,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:02,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:02,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 208 transitions, 2309 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:02,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:02,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:02,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:03,047 INFO L124 PetriNetUnfolderBase]: 956/2063 cut-off events. [2024-06-28 01:24:03,048 INFO L125 PetriNetUnfolderBase]: For 34366/34366 co-relation queries the response was YES. [2024-06-28 01:24:03,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 2063 events. 956/2063 cut-off events. For 34366/34366 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13909 event pairs, 293 based on Foata normal form. 1/1958 useless extension candidates. Maximal degree in co-relation 9384. Up to 1626 conditions per place. [2024-06-28 01:24:03,063 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 199 selfloop transitions, 17 changer transitions 0/224 dead transitions. [2024-06-28 01:24:03,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 224 transitions, 2817 flow [2024-06-28 01:24:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:24:03,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 01:24:03,064 INFO L175 Difference]: Start difference. First operand has 212 places, 208 transitions, 2309 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:24:03,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 224 transitions, 2817 flow [2024-06-28 01:24:03,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 224 transitions, 2672 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:03,194 INFO L231 Difference]: Finished difference. Result has 214 places, 208 transitions, 2203 flow [2024-06-28 01:24:03,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2203, PETRI_PLACES=214, PETRI_TRANSITIONS=208} [2024-06-28 01:24:03,194 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 174 predicate places. [2024-06-28 01:24:03,194 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 208 transitions, 2203 flow [2024-06-28 01:24:03,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:03,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:03,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:03,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:24:03,195 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:03,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1076936607, now seen corresponding path program 4 times [2024-06-28 01:24:03,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:03,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083061369] [2024-06-28 01:24:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:03,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:04,207 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 01:24:04,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083061369] [2024-06-28 01:24:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083061369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:04,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:04,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138986803] [2024-06-28 01:24:04,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:04,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:04,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:04,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 208 transitions, 2203 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:04,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:04,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:04,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:04,888 INFO L124 PetriNetUnfolderBase]: 972/2092 cut-off events. [2024-06-28 01:24:04,888 INFO L125 PetriNetUnfolderBase]: For 36426/36426 co-relation queries the response was YES. [2024-06-28 01:24:04,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9493 conditions, 2092 events. 972/2092 cut-off events. For 36426/36426 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14091 event pairs, 284 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 9410. Up to 1585 conditions per place. [2024-06-28 01:24:04,905 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 208 selfloop transitions, 19 changer transitions 0/235 dead transitions. [2024-06-28 01:24:04,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 235 transitions, 2787 flow [2024-06-28 01:24:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:24:04,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 01:24:04,906 INFO L175 Difference]: Start difference. First operand has 214 places, 208 transitions, 2203 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:24:04,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 235 transitions, 2787 flow [2024-06-28 01:24:05,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 235 transitions, 2747 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:05,013 INFO L231 Difference]: Finished difference. Result has 217 places, 209 transitions, 2227 flow [2024-06-28 01:24:05,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2227, PETRI_PLACES=217, PETRI_TRANSITIONS=209} [2024-06-28 01:24:05,014 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 177 predicate places. [2024-06-28 01:24:05,014 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 209 transitions, 2227 flow [2024-06-28 01:24:05,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:05,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:05,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:05,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:24:05,014 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:05,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash -949463671, now seen corresponding path program 5 times [2024-06-28 01:24:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334913423] [2024-06-28 01:24:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:05,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:06,340 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 01:24:06,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:06,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334913423] [2024-06-28 01:24:06,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334913423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:06,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:06,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570546527] [2024-06-28 01:24:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:06,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:06,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:06,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:06,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 209 transitions, 2227 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:06,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:06,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:06,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:07,248 INFO L124 PetriNetUnfolderBase]: 977/2110 cut-off events. [2024-06-28 01:24:07,249 INFO L125 PetriNetUnfolderBase]: For 36367/36367 co-relation queries the response was YES. [2024-06-28 01:24:07,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 2110 events. 977/2110 cut-off events. For 36367/36367 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14295 event pairs, 270 based on Foata normal form. 1/2002 useless extension candidates. Maximal degree in co-relation 9561. Up to 1316 conditions per place. [2024-06-28 01:24:07,266 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 111 selfloop transitions, 110 changer transitions 0/229 dead transitions. [2024-06-28 01:24:07,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 229 transitions, 3013 flow [2024-06-28 01:24:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:07,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:24:07,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 01:24:07,267 INFO L175 Difference]: Start difference. First operand has 217 places, 209 transitions, 2227 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:24:07,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 229 transitions, 3013 flow [2024-06-28 01:24:07,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 229 transitions, 2962 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:07,413 INFO L231 Difference]: Finished difference. Result has 219 places, 211 transitions, 2441 flow [2024-06-28 01:24:07,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2441, PETRI_PLACES=219, PETRI_TRANSITIONS=211} [2024-06-28 01:24:07,415 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 179 predicate places. [2024-06-28 01:24:07,415 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 211 transitions, 2441 flow [2024-06-28 01:24:07,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:07,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:07,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:07,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:24:07,416 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:07,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash -734332535, now seen corresponding path program 6 times [2024-06-28 01:24:07,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:07,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205929843] [2024-06-28 01:24:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:08,672 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 01:24:08,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:08,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205929843] [2024-06-28 01:24:08,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205929843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:08,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584885261] [2024-06-28 01:24:08,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:08,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:08,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:08,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:08,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 211 transitions, 2441 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:08,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:08,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:08,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:09,321 INFO L124 PetriNetUnfolderBase]: 982/2117 cut-off events. [2024-06-28 01:24:09,321 INFO L125 PetriNetUnfolderBase]: For 37732/37732 co-relation queries the response was YES. [2024-06-28 01:24:09,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9882 conditions, 2117 events. 982/2117 cut-off events. For 37732/37732 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14339 event pairs, 271 based on Foata normal form. 1/2009 useless extension candidates. Maximal degree in co-relation 9797. Up to 1609 conditions per place. [2024-06-28 01:24:09,337 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 182 selfloop transitions, 39 changer transitions 0/229 dead transitions. [2024-06-28 01:24:09,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 229 transitions, 3007 flow [2024-06-28 01:24:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:24:09,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 01:24:09,338 INFO L175 Difference]: Start difference. First operand has 219 places, 211 transitions, 2441 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:24:09,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 229 transitions, 3007 flow [2024-06-28 01:24:09,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 229 transitions, 2772 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:09,479 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 2341 flow [2024-06-28 01:24:09,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2341, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-06-28 01:24:09,480 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 182 predicate places. [2024-06-28 01:24:09,480 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 2341 flow [2024-06-28 01:24:09,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:09,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:09,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:09,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:24:09,480 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:09,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash 331106157, now seen corresponding path program 7 times [2024-06-28 01:24:09,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:09,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015430382] [2024-06-28 01:24:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:10,619 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 01:24:10,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015430382] [2024-06-28 01:24:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015430382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:10,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:10,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:10,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971812791] [2024-06-28 01:24:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:10,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:10,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:10,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:10,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:10,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 2341 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:10,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:10,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:10,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:11,247 INFO L124 PetriNetUnfolderBase]: 980/2114 cut-off events. [2024-06-28 01:24:11,247 INFO L125 PetriNetUnfolderBase]: For 36151/36151 co-relation queries the response was YES. [2024-06-28 01:24:11,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9592 conditions, 2114 events. 980/2114 cut-off events. For 36151/36151 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14309 event pairs, 271 based on Foata normal form. 1/2006 useless extension candidates. Maximal degree in co-relation 9506. Up to 1606 conditions per place. [2024-06-28 01:24:11,267 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 181 selfloop transitions, 40 changer transitions 0/229 dead transitions. [2024-06-28 01:24:11,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 229 transitions, 2859 flow [2024-06-28 01:24:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:24:11,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:24:11,268 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 2341 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:24:11,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 229 transitions, 2859 flow [2024-06-28 01:24:11,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 2697 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:11,396 INFO L231 Difference]: Finished difference. Result has 224 places, 213 transitions, 2264 flow [2024-06-28 01:24:11,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2264, PETRI_PLACES=224, PETRI_TRANSITIONS=213} [2024-06-28 01:24:11,396 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 184 predicate places. [2024-06-28 01:24:11,396 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 213 transitions, 2264 flow [2024-06-28 01:24:11,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:11,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:11,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:11,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:24:11,397 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:11,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash -307303945, now seen corresponding path program 5 times [2024-06-28 01:24:11,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:11,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042773770] [2024-06-28 01:24:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:11,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:12,307 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 01:24:12,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042773770] [2024-06-28 01:24:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042773770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:12,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:12,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:12,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549761260] [2024-06-28 01:24:12,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:12,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:12,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:12,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 213 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:12,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:12,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:12,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:12,849 INFO L124 PetriNetUnfolderBase]: 977/2109 cut-off events. [2024-06-28 01:24:12,850 INFO L125 PetriNetUnfolderBase]: For 34495/34495 co-relation queries the response was YES. [2024-06-28 01:24:12,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9369 conditions, 2109 events. 977/2109 cut-off events. For 34495/34495 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14273 event pairs, 270 based on Foata normal form. 2/2003 useless extension candidates. Maximal degree in co-relation 9282. Up to 1490 conditions per place. [2024-06-28 01:24:12,866 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 167 selfloop transitions, 56 changer transitions 0/231 dead transitions. [2024-06-28 01:24:12,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 231 transitions, 2788 flow [2024-06-28 01:24:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:24:12,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:24:12,868 INFO L175 Difference]: Start difference. First operand has 224 places, 213 transitions, 2264 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:24:12,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 231 transitions, 2788 flow [2024-06-28 01:24:13,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 231 transitions, 2667 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:13,020 INFO L231 Difference]: Finished difference. Result has 223 places, 213 transitions, 2259 flow [2024-06-28 01:24:13,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2259, PETRI_PLACES=223, PETRI_TRANSITIONS=213} [2024-06-28 01:24:13,020 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 183 predicate places. [2024-06-28 01:24:13,021 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 213 transitions, 2259 flow [2024-06-28 01:24:13,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:13,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:13,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:24:13,021 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:13,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1372520677, now seen corresponding path program 8 times [2024-06-28 01:24:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:13,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368819270] [2024-06-28 01:24:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:13,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:14,112 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 01:24:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368819270] [2024-06-28 01:24:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368819270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:14,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203191175] [2024-06-28 01:24:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:14,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:14,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 213 transitions, 2259 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:14,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:14,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:14,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:14,780 INFO L124 PetriNetUnfolderBase]: 975/2106 cut-off events. [2024-06-28 01:24:14,780 INFO L125 PetriNetUnfolderBase]: For 31890/31890 co-relation queries the response was YES. [2024-06-28 01:24:14,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9327 conditions, 2106 events. 975/2106 cut-off events. For 31890/31890 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14284 event pairs, 270 based on Foata normal form. 1/1998 useless extension candidates. Maximal degree in co-relation 9239. Up to 1377 conditions per place. [2024-06-28 01:24:14,800 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 139 selfloop transitions, 83 changer transitions 0/230 dead transitions. [2024-06-28 01:24:14,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 230 transitions, 2901 flow [2024-06-28 01:24:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:24:14,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:24:14,802 INFO L175 Difference]: Start difference. First operand has 223 places, 213 transitions, 2259 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:24:14,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 230 transitions, 2901 flow [2024-06-28 01:24:14,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 230 transitions, 2745 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:14,970 INFO L231 Difference]: Finished difference. Result has 226 places, 213 transitions, 2274 flow [2024-06-28 01:24:14,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2274, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2024-06-28 01:24:14,970 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 186 predicate places. [2024-06-28 01:24:14,971 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 2274 flow [2024-06-28 01:24:14,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:14,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:14,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:24:14,971 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:14,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash 368876093, now seen corresponding path program 9 times [2024-06-28 01:24:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093894202] [2024-06-28 01:24:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:16,208 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 01:24:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093894202] [2024-06-28 01:24:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093894202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394524680] [2024-06-28 01:24:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:16,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:16,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 2274 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:16,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:16,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:16,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:16,916 INFO L124 PetriNetUnfolderBase]: 983/2126 cut-off events. [2024-06-28 01:24:16,916 INFO L125 PetriNetUnfolderBase]: For 30046/30046 co-relation queries the response was YES. [2024-06-28 01:24:16,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9347 conditions, 2126 events. 983/2126 cut-off events. For 30046/30046 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14451 event pairs, 267 based on Foata normal form. 1/2018 useless extension candidates. Maximal degree in co-relation 9258. Up to 1632 conditions per place. [2024-06-28 01:24:16,935 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 198 selfloop transitions, 46 changer transitions 0/252 dead transitions. [2024-06-28 01:24:16,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 252 transitions, 3097 flow [2024-06-28 01:24:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:24:16,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:24:16,936 INFO L175 Difference]: Start difference. First operand has 226 places, 213 transitions, 2274 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:24:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 252 transitions, 3097 flow [2024-06-28 01:24:17,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 252 transitions, 2859 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:17,093 INFO L231 Difference]: Finished difference. Result has 231 places, 229 transitions, 2427 flow [2024-06-28 01:24:17,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2427, PETRI_PLACES=231, PETRI_TRANSITIONS=229} [2024-06-28 01:24:17,093 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 191 predicate places. [2024-06-28 01:24:17,093 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 229 transitions, 2427 flow [2024-06-28 01:24:17,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:17,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:17,094 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 01:24:17,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:24:17,094 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:17,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash -796121557, now seen corresponding path program 1 times [2024-06-28 01:24:17,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:17,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982167582] [2024-06-28 01:24:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:17,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:17,874 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 01:24:17,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:17,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982167582] [2024-06-28 01:24:17,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982167582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:17,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:17,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:17,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177297452] [2024-06-28 01:24:17,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:17,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:17,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 229 transitions, 2427 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:17,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:17,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:17,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:18,501 INFO L124 PetriNetUnfolderBase]: 1018/2197 cut-off events. [2024-06-28 01:24:18,501 INFO L125 PetriNetUnfolderBase]: For 37086/37086 co-relation queries the response was YES. [2024-06-28 01:24:18,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9753 conditions, 2197 events. 1018/2197 cut-off events. For 37086/37086 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15009 event pairs, 256 based on Foata normal form. 2/2090 useless extension candidates. Maximal degree in co-relation 9659. Up to 1625 conditions per place. [2024-06-28 01:24:18,523 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 209 selfloop transitions, 43 changer transitions 0/260 dead transitions. [2024-06-28 01:24:18,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 260 transitions, 3205 flow [2024-06-28 01:24:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:24:18,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 01:24:18,524 INFO L175 Difference]: Start difference. First operand has 231 places, 229 transitions, 2427 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:24:18,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 260 transitions, 3205 flow [2024-06-28 01:24:18,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 260 transitions, 3072 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:18,677 INFO L231 Difference]: Finished difference. Result has 233 places, 231 transitions, 2422 flow [2024-06-28 01:24:18,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2422, PETRI_PLACES=233, PETRI_TRANSITIONS=231} [2024-06-28 01:24:18,678 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 193 predicate places. [2024-06-28 01:24:18,678 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 231 transitions, 2422 flow [2024-06-28 01:24:18,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:18,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:18,678 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 01:24:18,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:24:18,678 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:18,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1924599953, now seen corresponding path program 2 times [2024-06-28 01:24:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962966399] [2024-06-28 01:24:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:19,509 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 01:24:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:19,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962966399] [2024-06-28 01:24:19,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962966399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:19,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10694858] [2024-06-28 01:24:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:19,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:19,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:19,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 231 transitions, 2422 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:19,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:19,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:19,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:20,211 INFO L124 PetriNetUnfolderBase]: 1015/2200 cut-off events. [2024-06-28 01:24:20,211 INFO L125 PetriNetUnfolderBase]: For 33956/33956 co-relation queries the response was YES. [2024-06-28 01:24:20,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 2200 events. 1015/2200 cut-off events. For 33956/33956 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15084 event pairs, 278 based on Foata normal form. 2/2090 useless extension candidates. Maximal degree in co-relation 9492. Up to 1670 conditions per place. [2024-06-28 01:24:20,233 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 205 selfloop transitions, 42 changer transitions 0/255 dead transitions. [2024-06-28 01:24:20,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 255 transitions, 3016 flow [2024-06-28 01:24:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:20,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:24:20,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:24:20,234 INFO L175 Difference]: Start difference. First operand has 233 places, 231 transitions, 2422 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:24:20,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 255 transitions, 3016 flow [2024-06-28 01:24:20,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 255 transitions, 2925 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:20,425 INFO L231 Difference]: Finished difference. Result has 237 places, 231 transitions, 2419 flow [2024-06-28 01:24:20,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2419, PETRI_PLACES=237, PETRI_TRANSITIONS=231} [2024-06-28 01:24:20,426 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 197 predicate places. [2024-06-28 01:24:20,426 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 231 transitions, 2419 flow [2024-06-28 01:24:20,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:20,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:20,426 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 01:24:20,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:24:20,426 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:20,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:20,427 INFO L85 PathProgramCache]: Analyzing trace with hash -796265707, now seen corresponding path program 3 times [2024-06-28 01:24:20,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:20,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27481532] [2024-06-28 01:24:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:20,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:21,271 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 01:24:21,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:21,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27481532] [2024-06-28 01:24:21,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27481532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:21,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:21,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:21,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127299956] [2024-06-28 01:24:21,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:21,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:21,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:21,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:21,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:21,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 231 transitions, 2419 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:21,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:21,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:21,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:22,032 INFO L124 PetriNetUnfolderBase]: 1067/2323 cut-off events. [2024-06-28 01:24:22,032 INFO L125 PetriNetUnfolderBase]: For 46549/46549 co-relation queries the response was YES. [2024-06-28 01:24:22,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9888 conditions, 2323 events. 1067/2323 cut-off events. For 46549/46549 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16205 event pairs, 268 based on Foata normal form. 8/2210 useless extension candidates. Maximal degree in co-relation 9792. Up to 1530 conditions per place. [2024-06-28 01:24:22,055 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 214 selfloop transitions, 44 changer transitions 0/266 dead transitions. [2024-06-28 01:24:22,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 266 transitions, 3089 flow [2024-06-28 01:24:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:24:22,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 01:24:22,056 INFO L175 Difference]: Start difference. First operand has 237 places, 231 transitions, 2419 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:24:22,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 266 transitions, 3089 flow [2024-06-28 01:24:22,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 266 transitions, 3003 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:22,206 INFO L231 Difference]: Finished difference. Result has 238 places, 231 transitions, 2424 flow [2024-06-28 01:24:22,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2424, PETRI_PLACES=238, PETRI_TRANSITIONS=231} [2024-06-28 01:24:22,206 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 198 predicate places. [2024-06-28 01:24:22,206 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 231 transitions, 2424 flow [2024-06-28 01:24:22,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:22,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:22,207 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 01:24:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:24:22,207 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:22,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash -855251887, now seen corresponding path program 4 times [2024-06-28 01:24:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:22,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610746497] [2024-06-28 01:24:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:22,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:23,006 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 01:24:23,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610746497] [2024-06-28 01:24:23,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610746497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:23,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:23,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181903347] [2024-06-28 01:24:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:23,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:23,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:23,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:23,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 231 transitions, 2424 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:23,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:23,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:23,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:23,690 INFO L124 PetriNetUnfolderBase]: 1119/2410 cut-off events. [2024-06-28 01:24:23,691 INFO L125 PetriNetUnfolderBase]: For 48536/48536 co-relation queries the response was YES. [2024-06-28 01:24:23,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10315 conditions, 2410 events. 1119/2410 cut-off events. For 48536/48536 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16833 event pairs, 282 based on Foata normal form. 8/2300 useless extension candidates. Maximal degree in co-relation 10218. Up to 1726 conditions per place. [2024-06-28 01:24:23,713 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 231 selfloop transitions, 29 changer transitions 0/268 dead transitions. [2024-06-28 01:24:23,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 268 transitions, 3104 flow [2024-06-28 01:24:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:24:23,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:24:23,714 INFO L175 Difference]: Start difference. First operand has 238 places, 231 transitions, 2424 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:24:23,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 268 transitions, 3104 flow [2024-06-28 01:24:23,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 268 transitions, 3017 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:23,903 INFO L231 Difference]: Finished difference. Result has 240 places, 231 transitions, 2398 flow [2024-06-28 01:24:23,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2398, PETRI_PLACES=240, PETRI_TRANSITIONS=231} [2024-06-28 01:24:23,903 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 200 predicate places. [2024-06-28 01:24:23,903 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 231 transitions, 2398 flow [2024-06-28 01:24:23,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:23,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:23,904 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 01:24:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:24:23,904 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:23,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2110228407, now seen corresponding path program 5 times [2024-06-28 01:24:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947212269] [2024-06-28 01:24:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:24,793 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 01:24:24,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947212269] [2024-06-28 01:24:24,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947212269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:24,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:24,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672513900] [2024-06-28 01:24:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:24,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:24,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:24,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:24,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 231 transitions, 2398 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:24,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:24,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:25,566 INFO L124 PetriNetUnfolderBase]: 1187/2627 cut-off events. [2024-06-28 01:24:25,566 INFO L125 PetriNetUnfolderBase]: For 56195/56195 co-relation queries the response was YES. [2024-06-28 01:24:25,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 2627 events. 1187/2627 cut-off events. For 56195/56195 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19001 event pairs, 402 based on Foata normal form. 10/2498 useless extension candidates. Maximal degree in co-relation 10897. Up to 1783 conditions per place. [2024-06-28 01:24:25,588 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 187 selfloop transitions, 62 changer transitions 0/257 dead transitions. [2024-06-28 01:24:25,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 257 transitions, 3052 flow [2024-06-28 01:24:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:24:25,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:24:25,590 INFO L175 Difference]: Start difference. First operand has 240 places, 231 transitions, 2398 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:24:25,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 257 transitions, 3052 flow [2024-06-28 01:24:25,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 257 transitions, 2995 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:25,772 INFO L231 Difference]: Finished difference. Result has 242 places, 231 transitions, 2474 flow [2024-06-28 01:24:25,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2474, PETRI_PLACES=242, PETRI_TRANSITIONS=231} [2024-06-28 01:24:25,772 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 202 predicate places. [2024-06-28 01:24:25,772 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 231 transitions, 2474 flow [2024-06-28 01:24:25,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:25,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:25,773 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 01:24:25,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:24:25,773 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:25,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2103078567, now seen corresponding path program 6 times [2024-06-28 01:24:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534718203] [2024-06-28 01:24:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:26,829 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 01:24:26,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534718203] [2024-06-28 01:24:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534718203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:26,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544147539] [2024-06-28 01:24:26,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:26,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:26,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 231 transitions, 2474 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:26,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:26,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:26,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:27,631 INFO L124 PetriNetUnfolderBase]: 1203/2663 cut-off events. [2024-06-28 01:24:27,632 INFO L125 PetriNetUnfolderBase]: For 40727/40727 co-relation queries the response was YES. [2024-06-28 01:24:27,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11264 conditions, 2663 events. 1203/2663 cut-off events. For 40727/40727 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19343 event pairs, 410 based on Foata normal form. 2/2522 useless extension candidates. Maximal degree in co-relation 11165. Up to 1935 conditions per place. [2024-06-28 01:24:27,656 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 176 selfloop transitions, 70 changer transitions 0/254 dead transitions. [2024-06-28 01:24:27,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 254 transitions, 3080 flow [2024-06-28 01:24:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:24:27,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:24:27,658 INFO L175 Difference]: Start difference. First operand has 242 places, 231 transitions, 2474 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:24:27,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 254 transitions, 3080 flow [2024-06-28 01:24:27,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 254 transitions, 2963 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:27,841 INFO L231 Difference]: Finished difference. Result has 244 places, 232 transitions, 2525 flow [2024-06-28 01:24:27,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2525, PETRI_PLACES=244, PETRI_TRANSITIONS=232} [2024-06-28 01:24:27,841 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 204 predicate places. [2024-06-28 01:24:27,842 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 232 transitions, 2525 flow [2024-06-28 01:24:27,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:27,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:27,842 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 01:24:27,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:24:27,842 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:27,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:27,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2102871177, now seen corresponding path program 7 times [2024-06-28 01:24:27,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:27,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110662227] [2024-06-28 01:24:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:28,821 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 01:24:28,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110662227] [2024-06-28 01:24:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110662227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312898725] [2024-06-28 01:24:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:28,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:28,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 232 transitions, 2525 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:28,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:28,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:28,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:29,568 INFO L124 PetriNetUnfolderBase]: 1219/2697 cut-off events. [2024-06-28 01:24:29,568 INFO L125 PetriNetUnfolderBase]: For 42721/42721 co-relation queries the response was YES. [2024-06-28 01:24:29,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11579 conditions, 2697 events. 1219/2697 cut-off events. For 42721/42721 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19658 event pairs, 410 based on Foata normal form. 2/2556 useless extension candidates. Maximal degree in co-relation 11479. Up to 1932 conditions per place. [2024-06-28 01:24:29,595 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 192 selfloop transitions, 60 changer transitions 0/260 dead transitions. [2024-06-28 01:24:29,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 260 transitions, 3179 flow [2024-06-28 01:24:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:24:29,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:24:29,596 INFO L175 Difference]: Start difference. First operand has 244 places, 232 transitions, 2525 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:24:29,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 260 transitions, 3179 flow [2024-06-28 01:24:29,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 260 transitions, 3025 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:29,808 INFO L231 Difference]: Finished difference. Result has 246 places, 234 transitions, 2541 flow [2024-06-28 01:24:29,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2541, PETRI_PLACES=246, PETRI_TRANSITIONS=234} [2024-06-28 01:24:29,808 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 206 predicate places. [2024-06-28 01:24:29,809 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 234 transitions, 2541 flow [2024-06-28 01:24:29,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:29,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:29,809 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 01:24:29,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:24:29,809 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:29,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1610557665, now seen corresponding path program 8 times [2024-06-28 01:24:29,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:29,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116139652] [2024-06-28 01:24:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:29,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:30,656 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 01:24:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116139652] [2024-06-28 01:24:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116139652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:30,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:30,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058661889] [2024-06-28 01:24:30,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:30,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:30,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:30,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:30,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 234 transitions, 2541 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:30,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:30,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:30,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:31,364 INFO L124 PetriNetUnfolderBase]: 1235/2726 cut-off events. [2024-06-28 01:24:31,364 INFO L125 PetriNetUnfolderBase]: For 44396/44396 co-relation queries the response was YES. [2024-06-28 01:24:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11755 conditions, 2726 events. 1235/2726 cut-off events. For 44396/44396 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19857 event pairs, 422 based on Foata normal form. 2/2585 useless extension candidates. Maximal degree in co-relation 11654. Up to 2039 conditions per place. [2024-06-28 01:24:31,391 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 218 selfloop transitions, 40 changer transitions 0/266 dead transitions. [2024-06-28 01:24:31,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 266 transitions, 3258 flow [2024-06-28 01:24:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:24:31,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:24:31,392 INFO L175 Difference]: Start difference. First operand has 246 places, 234 transitions, 2541 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:24:31,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 266 transitions, 3258 flow [2024-06-28 01:24:31,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 266 transitions, 3140 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:31,609 INFO L231 Difference]: Finished difference. Result has 251 places, 239 transitions, 2618 flow [2024-06-28 01:24:31,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2618, PETRI_PLACES=251, PETRI_TRANSITIONS=239} [2024-06-28 01:24:31,609 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 211 predicate places. [2024-06-28 01:24:31,610 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 239 transitions, 2618 flow [2024-06-28 01:24:31,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:31,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:31,610 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 01:24:31,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:24:31,610 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:31,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2095159025, now seen corresponding path program 9 times [2024-06-28 01:24:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222147055] [2024-06-28 01:24:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:31,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:32,437 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 01:24:32,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:32,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222147055] [2024-06-28 01:24:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222147055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048135878] [2024-06-28 01:24:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:32,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:32,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:32,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 239 transitions, 2618 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:32,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:32,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:32,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:33,138 INFO L124 PetriNetUnfolderBase]: 1251/2764 cut-off events. [2024-06-28 01:24:33,138 INFO L125 PetriNetUnfolderBase]: For 45385/45385 co-relation queries the response was YES. [2024-06-28 01:24:33,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11912 conditions, 2764 events. 1251/2764 cut-off events. For 45385/45385 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 20209 event pairs, 417 based on Foata normal form. 2/2618 useless extension candidates. Maximal degree in co-relation 11808. Up to 2084 conditions per place. [2024-06-28 01:24:33,166 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 232 selfloop transitions, 31 changer transitions 0/271 dead transitions. [2024-06-28 01:24:33,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 271 transitions, 3294 flow [2024-06-28 01:24:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:24:33,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:24:33,167 INFO L175 Difference]: Start difference. First operand has 251 places, 239 transitions, 2618 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:24:33,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 271 transitions, 3294 flow [2024-06-28 01:24:33,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 271 transitions, 3214 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:33,372 INFO L231 Difference]: Finished difference. Result has 256 places, 240 transitions, 2632 flow [2024-06-28 01:24:33,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2632, PETRI_PLACES=256, PETRI_TRANSITIONS=240} [2024-06-28 01:24:33,372 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 216 predicate places. [2024-06-28 01:24:33,373 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 240 transitions, 2632 flow [2024-06-28 01:24:33,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:33,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:33,373 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 01:24:33,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:24:33,373 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:33,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:33,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1924607889, now seen corresponding path program 1 times [2024-06-28 01:24:33,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:33,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270126318] [2024-06-28 01:24:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:33,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:34,650 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 01:24:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270126318] [2024-06-28 01:24:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270126318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470527500] [2024-06-28 01:24:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:34,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:34,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 240 transitions, 2632 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:34,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:34,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:34,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:35,454 INFO L124 PetriNetUnfolderBase]: 1303/2914 cut-off events. [2024-06-28 01:24:35,454 INFO L125 PetriNetUnfolderBase]: For 61599/61599 co-relation queries the response was YES. [2024-06-28 01:24:35,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12292 conditions, 2914 events. 1303/2914 cut-off events. For 61599/61599 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21813 event pairs, 476 based on Foata normal form. 8/2765 useless extension candidates. Maximal degree in co-relation 12186. Up to 2118 conditions per place. [2024-06-28 01:24:35,482 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 218 selfloop transitions, 43 changer transitions 0/269 dead transitions. [2024-06-28 01:24:35,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 269 transitions, 3306 flow [2024-06-28 01:24:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:24:35,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-28 01:24:35,483 INFO L175 Difference]: Start difference. First operand has 256 places, 240 transitions, 2632 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:24:35,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 269 transitions, 3306 flow [2024-06-28 01:24:35,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 269 transitions, 3222 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:35,711 INFO L231 Difference]: Finished difference. Result has 259 places, 240 transitions, 2638 flow [2024-06-28 01:24:35,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2548, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2638, PETRI_PLACES=259, PETRI_TRANSITIONS=240} [2024-06-28 01:24:35,711 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2024-06-28 01:24:35,712 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 240 transitions, 2638 flow [2024-06-28 01:24:35,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:35,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:35,712 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 01:24:35,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:24:35,712 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:35,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1992728395, now seen corresponding path program 2 times [2024-06-28 01:24:35,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:35,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681876710] [2024-06-28 01:24:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:35,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:36,978 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 01:24:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681876710] [2024-06-28 01:24:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681876710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:36,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:36,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972235448] [2024-06-28 01:24:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:37,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:37,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 240 transitions, 2638 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:37,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:37,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:37,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:37,887 INFO L124 PetriNetUnfolderBase]: 1473/3349 cut-off events. [2024-06-28 01:24:37,887 INFO L125 PetriNetUnfolderBase]: For 79127/79127 co-relation queries the response was YES. [2024-06-28 01:24:37,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14151 conditions, 3349 events. 1473/3349 cut-off events. For 79127/79127 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 26318 event pairs, 581 based on Foata normal form. 6/3175 useless extension candidates. Maximal degree in co-relation 14044. Up to 1853 conditions per place. [2024-06-28 01:24:37,919 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 168 selfloop transitions, 98 changer transitions 0/274 dead transitions. [2024-06-28 01:24:37,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 274 transitions, 3508 flow [2024-06-28 01:24:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:24:37,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:24:37,920 INFO L175 Difference]: Start difference. First operand has 259 places, 240 transitions, 2638 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:24:37,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 274 transitions, 3508 flow [2024-06-28 01:24:38,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 274 transitions, 3424 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:38,211 INFO L231 Difference]: Finished difference. Result has 261 places, 240 transitions, 2753 flow [2024-06-28 01:24:38,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2554, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2753, PETRI_PLACES=261, PETRI_TRANSITIONS=240} [2024-06-28 01:24:38,212 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 221 predicate places. [2024-06-28 01:24:38,212 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 240 transitions, 2753 flow [2024-06-28 01:24:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:38,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:38,212 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 01:24:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:24:38,212 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:38,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2000147005, now seen corresponding path program 3 times [2024-06-28 01:24:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4880156] [2024-06-28 01:24:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:39,337 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 01:24:39,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:39,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4880156] [2024-06-28 01:24:39,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4880156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:39,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:39,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:39,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754978735] [2024-06-28 01:24:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:39,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:39,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:39,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 240 transitions, 2753 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:39,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:39,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:39,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:40,365 INFO L124 PetriNetUnfolderBase]: 1463/3336 cut-off events. [2024-06-28 01:24:40,366 INFO L125 PetriNetUnfolderBase]: For 66507/66507 co-relation queries the response was YES. [2024-06-28 01:24:40,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13671 conditions, 3336 events. 1463/3336 cut-off events. For 66507/66507 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26307 event pairs, 609 based on Foata normal form. 8/3157 useless extension candidates. Maximal degree in co-relation 13563. Up to 2376 conditions per place. [2024-06-28 01:24:40,397 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 191 selfloop transitions, 68 changer transitions 0/267 dead transitions. [2024-06-28 01:24:40,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 267 transitions, 3417 flow [2024-06-28 01:24:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:24:40,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:24:40,398 INFO L175 Difference]: Start difference. First operand has 261 places, 240 transitions, 2753 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:24:40,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 267 transitions, 3417 flow [2024-06-28 01:24:40,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 267 transitions, 3244 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:40,650 INFO L231 Difference]: Finished difference. Result has 264 places, 240 transitions, 2724 flow [2024-06-28 01:24:40,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2724, PETRI_PLACES=264, PETRI_TRANSITIONS=240} [2024-06-28 01:24:40,650 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-28 01:24:40,650 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 240 transitions, 2724 flow [2024-06-28 01:24:40,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:40,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:40,650 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 01:24:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:24:40,651 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:40,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1064014413, now seen corresponding path program 10 times [2024-06-28 01:24:40,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:40,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610481968] [2024-06-28 01:24:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:40,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:41,711 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 01:24:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:41,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610481968] [2024-06-28 01:24:41,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610481968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532854055] [2024-06-28 01:24:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:41,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:41,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:41,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 240 transitions, 2724 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:41,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:41,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:41,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:42,524 INFO L124 PetriNetUnfolderBase]: 1531/3515 cut-off events. [2024-06-28 01:24:42,524 INFO L125 PetriNetUnfolderBase]: For 75503/75503 co-relation queries the response was YES. [2024-06-28 01:24:42,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14370 conditions, 3515 events. 1531/3515 cut-off events. For 75503/75503 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 28231 event pairs, 654 based on Foata normal form. 10/3327 useless extension candidates. Maximal degree in co-relation 14262. Up to 2509 conditions per place. [2024-06-28 01:24:42,556 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 207 selfloop transitions, 49 changer transitions 0/264 dead transitions. [2024-06-28 01:24:42,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 264 transitions, 3394 flow [2024-06-28 01:24:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:24:42,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:24:42,558 INFO L175 Difference]: Start difference. First operand has 264 places, 240 transitions, 2724 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:24:42,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 264 transitions, 3394 flow [2024-06-28 01:24:42,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 264 transitions, 3264 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:42,844 INFO L231 Difference]: Finished difference. Result has 265 places, 241 transitions, 2728 flow [2024-06-28 01:24:42,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2728, PETRI_PLACES=265, PETRI_TRANSITIONS=241} [2024-06-28 01:24:42,847 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 225 predicate places. [2024-06-28 01:24:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 241 transitions, 2728 flow [2024-06-28 01:24:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:42,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:42,847 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 01:24:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:24:42,847 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:42,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1289478949, now seen corresponding path program 11 times [2024-06-28 01:24:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846674364] [2024-06-28 01:24:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:43,749 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 01:24:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846674364] [2024-06-28 01:24:43,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846674364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:43,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079997770] [2024-06-28 01:24:43,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:43,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:43,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:43,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 241 transitions, 2728 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:43,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:43,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:43,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:44,572 INFO L124 PetriNetUnfolderBase]: 1547/3550 cut-off events. [2024-06-28 01:24:44,573 INFO L125 PetriNetUnfolderBase]: For 56705/56705 co-relation queries the response was YES. [2024-06-28 01:24:44,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14669 conditions, 3550 events. 1547/3550 cut-off events. For 56705/56705 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 28541 event pairs, 662 based on Foata normal form. 2/3350 useless extension candidates. Maximal degree in co-relation 14560. Up to 2668 conditions per place. [2024-06-28 01:24:44,609 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 213 selfloop transitions, 41 changer transitions 0/262 dead transitions. [2024-06-28 01:24:44,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 262 transitions, 3354 flow [2024-06-28 01:24:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:24:44,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:24:44,610 INFO L175 Difference]: Start difference. First operand has 265 places, 241 transitions, 2728 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:24:44,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 262 transitions, 3354 flow [2024-06-28 01:24:44,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 262 transitions, 3242 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:44,905 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 2734 flow [2024-06-28 01:24:44,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2734, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-06-28 01:24:44,906 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 227 predicate places. [2024-06-28 01:24:44,906 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 2734 flow [2024-06-28 01:24:44,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:44,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:44,906 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 01:24:44,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:24:44,906 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:44,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1483625749, now seen corresponding path program 12 times [2024-06-28 01:24:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:44,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172957147] [2024-06-28 01:24:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:44,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:45,791 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 01:24:45,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:45,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172957147] [2024-06-28 01:24:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172957147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527024134] [2024-06-28 01:24:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:45,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:45,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:45,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 2734 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:45,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:45,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:45,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:46,670 INFO L124 PetriNetUnfolderBase]: 1582/3620 cut-off events. [2024-06-28 01:24:46,670 INFO L125 PetriNetUnfolderBase]: For 66205/66205 co-relation queries the response was YES. [2024-06-28 01:24:46,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15300 conditions, 3620 events. 1582/3620 cut-off events. For 66205/66205 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 29192 event pairs, 652 based on Foata normal form. 2/3414 useless extension candidates. Maximal degree in co-relation 15190. Up to 2704 conditions per place. [2024-06-28 01:24:46,710 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 226 selfloop transitions, 36 changer transitions 0/270 dead transitions. [2024-06-28 01:24:46,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 270 transitions, 3585 flow [2024-06-28 01:24:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:24:46,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:24:46,711 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 2734 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:24:46,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 270 transitions, 3585 flow [2024-06-28 01:24:47,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 270 transitions, 3475 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:47,010 INFO L231 Difference]: Finished difference. Result has 270 places, 245 transitions, 2781 flow [2024-06-28 01:24:47,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2626, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=270, PETRI_TRANSITIONS=245} [2024-06-28 01:24:47,010 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 230 predicate places. [2024-06-28 01:24:47,010 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 245 transitions, 2781 flow [2024-06-28 01:24:47,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:47,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:47,011 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 01:24:47,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:24:47,011 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:47,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash 394173479, now seen corresponding path program 13 times [2024-06-28 01:24:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21902554] [2024-06-28 01:24:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:47,961 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 01:24:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21902554] [2024-06-28 01:24:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21902554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375181840] [2024-06-28 01:24:47,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:47,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:47,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:48,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:48,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 245 transitions, 2781 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:48,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:48,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:48,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:48,925 INFO L124 PetriNetUnfolderBase]: 1598/3665 cut-off events. [2024-06-28 01:24:48,925 INFO L125 PetriNetUnfolderBase]: For 67816/67816 co-relation queries the response was YES. [2024-06-28 01:24:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15488 conditions, 3665 events. 1598/3665 cut-off events. For 67816/67816 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 29668 event pairs, 681 based on Foata normal form. 2/3457 useless extension candidates. Maximal degree in co-relation 15376. Up to 2632 conditions per place. [2024-06-28 01:24:48,960 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 177 selfloop transitions, 81 changer transitions 0/266 dead transitions. [2024-06-28 01:24:48,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 266 transitions, 3419 flow [2024-06-28 01:24:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:24:48,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:24:48,961 INFO L175 Difference]: Start difference. First operand has 270 places, 245 transitions, 2781 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:24:48,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 266 transitions, 3419 flow [2024-06-28 01:24:49,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 266 transitions, 3344 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:49,244 INFO L231 Difference]: Finished difference. Result has 275 places, 246 transitions, 2908 flow [2024-06-28 01:24:49,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2908, PETRI_PLACES=275, PETRI_TRANSITIONS=246} [2024-06-28 01:24:49,245 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 235 predicate places. [2024-06-28 01:24:49,245 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 246 transitions, 2908 flow [2024-06-28 01:24:49,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:49,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:49,245 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 01:24:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:24:49,245 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:49,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1483418359, now seen corresponding path program 14 times [2024-06-28 01:24:49,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:49,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292817434] [2024-06-28 01:24:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:49,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:50,505 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 01:24:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292817434] [2024-06-28 01:24:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292817434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762458425] [2024-06-28 01:24:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:50,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:50,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:50,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 246 transitions, 2908 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:50,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:50,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:50,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:51,318 INFO L124 PetriNetUnfolderBase]: 1595/3653 cut-off events. [2024-06-28 01:24:51,318 INFO L125 PetriNetUnfolderBase]: For 62344/62344 co-relation queries the response was YES. [2024-06-28 01:24:51,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15312 conditions, 3653 events. 1595/3653 cut-off events. For 62344/62344 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 29550 event pairs, 671 based on Foata normal form. 2/3444 useless extension candidates. Maximal degree in co-relation 15198. Up to 2777 conditions per place. [2024-06-28 01:24:51,359 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 223 selfloop transitions, 35 changer transitions 0/266 dead transitions. [2024-06-28 01:24:51,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 266 transitions, 3512 flow [2024-06-28 01:24:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:24:51,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:24:51,361 INFO L175 Difference]: Start difference. First operand has 275 places, 246 transitions, 2908 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:24:51,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 266 transitions, 3512 flow [2024-06-28 01:24:51,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 266 transitions, 3298 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:51,686 INFO L231 Difference]: Finished difference. Result has 277 places, 246 transitions, 2768 flow [2024-06-28 01:24:51,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2768, PETRI_PLACES=277, PETRI_TRANSITIONS=246} [2024-06-28 01:24:51,687 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 01:24:51,687 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 246 transitions, 2768 flow [2024-06-28 01:24:51,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:51,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:51,687 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 01:24:51,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:24:51,688 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:51,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1289686339, now seen corresponding path program 15 times [2024-06-28 01:24:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153350763] [2024-06-28 01:24:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:52,864 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 01:24:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:52,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153350763] [2024-06-28 01:24:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153350763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:52,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309205927] [2024-06-28 01:24:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:52,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:52,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 246 transitions, 2768 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:52,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:52,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:52,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:53,972 INFO L124 PetriNetUnfolderBase]: 1624/3722 cut-off events. [2024-06-28 01:24:53,972 INFO L125 PetriNetUnfolderBase]: For 61529/61529 co-relation queries the response was YES. [2024-06-28 01:24:54,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15283 conditions, 3722 events. 1624/3722 cut-off events. For 61529/61529 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 30218 event pairs, 683 based on Foata normal form. 2/3514 useless extension candidates. Maximal degree in co-relation 15168. Up to 2723 conditions per place. [2024-06-28 01:24:54,015 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 216 selfloop transitions, 54 changer transitions 0/278 dead transitions. [2024-06-28 01:24:54,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 278 transitions, 3520 flow [2024-06-28 01:24:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:24:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:24:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 206 transitions. [2024-06-28 01:24:54,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-06-28 01:24:54,016 INFO L175 Difference]: Start difference. First operand has 277 places, 246 transitions, 2768 flow. Second operand 13 states and 206 transitions. [2024-06-28 01:24:54,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 278 transitions, 3520 flow [2024-06-28 01:24:54,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 278 transitions, 3433 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:54,360 INFO L231 Difference]: Finished difference. Result has 284 places, 255 transitions, 2939 flow [2024-06-28 01:24:54,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2939, PETRI_PLACES=284, PETRI_TRANSITIONS=255} [2024-06-28 01:24:54,360 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 244 predicate places. [2024-06-28 01:24:54,360 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 255 transitions, 2939 flow [2024-06-28 01:24:54,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:54,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:54,361 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 01:24:54,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:24:54,361 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:54,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1489132279, now seen corresponding path program 16 times [2024-06-28 01:24:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:54,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035458664] [2024-06-28 01:24:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:55,446 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 01:24:55,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:55,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035458664] [2024-06-28 01:24:55,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035458664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:55,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:55,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:55,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116597273] [2024-06-28 01:24:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:55,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:55,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:55,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:55,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 255 transitions, 2939 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:55,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:55,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:55,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:56,439 INFO L124 PetriNetUnfolderBase]: 1640/3749 cut-off events. [2024-06-28 01:24:56,439 INFO L125 PetriNetUnfolderBase]: For 66694/66694 co-relation queries the response was YES. [2024-06-28 01:24:56,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15992 conditions, 3749 events. 1640/3749 cut-off events. For 66694/66694 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30447 event pairs, 674 based on Foata normal form. 2/3536 useless extension candidates. Maximal degree in co-relation 15873. Up to 2790 conditions per place. [2024-06-28 01:24:56,479 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 235 selfloop transitions, 40 changer transitions 0/283 dead transitions. [2024-06-28 01:24:56,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 283 transitions, 3645 flow [2024-06-28 01:24:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:24:56,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:24:56,480 INFO L175 Difference]: Start difference. First operand has 284 places, 255 transitions, 2939 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:24:56,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 283 transitions, 3645 flow [2024-06-28 01:24:56,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 283 transitions, 3506 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:56,823 INFO L231 Difference]: Finished difference. Result has 287 places, 256 transitions, 2930 flow [2024-06-28 01:24:56,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2930, PETRI_PLACES=287, PETRI_TRANSITIONS=256} [2024-06-28 01:24:56,824 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 247 predicate places. [2024-06-28 01:24:56,824 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 2930 flow [2024-06-28 01:24:56,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:56,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:56,824 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 01:24:56,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:24:56,824 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:56,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:56,825 INFO L85 PathProgramCache]: Analyzing trace with hash 394167899, now seen corresponding path program 17 times [2024-06-28 01:24:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665915673] [2024-06-28 01:24:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:57,789 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 01:24:57,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:57,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665915673] [2024-06-28 01:24:57,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665915673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:57,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:57,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741595457] [2024-06-28 01:24:57,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:57,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:57,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:57,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:24:57,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 256 transitions, 2930 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:57,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:57,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:24:57,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:58,798 INFO L124 PetriNetUnfolderBase]: 1660/3810 cut-off events. [2024-06-28 01:24:58,798 INFO L125 PetriNetUnfolderBase]: For 69595/69595 co-relation queries the response was YES. [2024-06-28 01:24:58,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16190 conditions, 3810 events. 1660/3810 cut-off events. For 69595/69595 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 31175 event pairs, 695 based on Foata normal form. 2/3591 useless extension candidates. Maximal degree in co-relation 16070. Up to 2667 conditions per place. [2024-06-28 01:24:58,849 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 187 selfloop transitions, 88 changer transitions 0/283 dead transitions. [2024-06-28 01:24:58,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 283 transitions, 3838 flow [2024-06-28 01:24:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:24:58,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:24:58,850 INFO L175 Difference]: Start difference. First operand has 287 places, 256 transitions, 2930 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:24:58,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 283 transitions, 3838 flow [2024-06-28 01:24:59,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 283 transitions, 3724 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:59,238 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 3078 flow [2024-06-28 01:24:59,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3078, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2024-06-28 01:24:59,238 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 249 predicate places. [2024-06-28 01:24:59,239 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 3078 flow [2024-06-28 01:24:59,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:59,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:59,239 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 01:24:59,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:24:59,239 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:59,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 401525129, now seen corresponding path program 18 times [2024-06-28 01:24:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031575664] [2024-06-28 01:24:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:00,189 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 01:25:00,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:00,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031575664] [2024-06-28 01:25:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031575664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:00,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:00,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:00,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63243581] [2024-06-28 01:25:00,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:00,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:00,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:00,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:00,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:00,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:00,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 3078 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:00,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:00,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:00,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:01,123 INFO L124 PetriNetUnfolderBase]: 1676/3849 cut-off events. [2024-06-28 01:25:01,123 INFO L125 PetriNetUnfolderBase]: For 72323/72323 co-relation queries the response was YES. [2024-06-28 01:25:01,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16490 conditions, 3849 events. 1676/3849 cut-off events. For 72323/72323 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 31543 event pairs, 710 based on Foata normal form. 2/3625 useless extension candidates. Maximal degree in co-relation 16369. Up to 2767 conditions per place. [2024-06-28 01:25:01,167 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 186 selfloop transitions, 85 changer transitions 0/279 dead transitions. [2024-06-28 01:25:01,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 279 transitions, 3764 flow [2024-06-28 01:25:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:25:01,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:25:01,169 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 3078 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:25:01,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 279 transitions, 3764 flow [2024-06-28 01:25:01,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 279 transitions, 3597 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:25:01,576 INFO L231 Difference]: Finished difference. Result has 293 places, 259 transitions, 3129 flow [2024-06-28 01:25:01,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3129, PETRI_PLACES=293, PETRI_TRANSITIONS=259} [2024-06-28 01:25:01,576 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 253 predicate places. [2024-06-28 01:25:01,576 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 259 transitions, 3129 flow [2024-06-28 01:25:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:01,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:01,577 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 01:25:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:25:01,577 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 650875799, now seen corresponding path program 19 times [2024-06-28 01:25:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:01,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102307760] [2024-06-28 01:25:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:02,586 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 01:25:02,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:02,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102307760] [2024-06-28 01:25:02,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102307760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:02,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:02,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:02,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204139840] [2024-06-28 01:25:02,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:02,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:02,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:02,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 259 transitions, 3129 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:02,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:02,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:02,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:03,560 INFO L124 PetriNetUnfolderBase]: 1673/3843 cut-off events. [2024-06-28 01:25:03,560 INFO L125 PetriNetUnfolderBase]: For 62525/62525 co-relation queries the response was YES. [2024-06-28 01:25:03,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16118 conditions, 3843 events. 1673/3843 cut-off events. For 62525/62525 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 31523 event pairs, 734 based on Foata normal form. 2/3619 useless extension candidates. Maximal degree in co-relation 15995. Up to 2953 conditions per place. [2024-06-28 01:25:03,607 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 255 selfloop transitions, 16 changer transitions 0/279 dead transitions. [2024-06-28 01:25:03,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 279 transitions, 3773 flow [2024-06-28 01:25:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:25:03,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 01:25:03,608 INFO L175 Difference]: Start difference. First operand has 293 places, 259 transitions, 3129 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:25:03,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 279 transitions, 3773 flow [2024-06-28 01:25:04,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 279 transitions, 3549 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:04,079 INFO L231 Difference]: Finished difference. Result has 296 places, 259 transitions, 2941 flow [2024-06-28 01:25:04,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2941, PETRI_PLACES=296, PETRI_TRANSITIONS=259} [2024-06-28 01:25:04,079 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 256 predicate places. [2024-06-28 01:25:04,080 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 259 transitions, 2941 flow [2024-06-28 01:25:04,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:04,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:04,080 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 01:25:04,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:25:04,080 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:04,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash 401533065, now seen corresponding path program 4 times [2024-06-28 01:25:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:04,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270926166] [2024-06-28 01:25:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:04,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:05,202 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 01:25:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:05,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270926166] [2024-06-28 01:25:05,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270926166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:05,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:05,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862769035] [2024-06-28 01:25:05,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:05,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:05,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:05,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:05,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 259 transitions, 2941 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:05,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:05,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:06,064 INFO L124 PetriNetUnfolderBase]: 1725/3979 cut-off events. [2024-06-28 01:25:06,065 INFO L125 PetriNetUnfolderBase]: For 81712/81712 co-relation queries the response was YES. [2024-06-28 01:25:06,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16155 conditions, 3979 events. 1725/3979 cut-off events. For 81712/81712 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 32957 event pairs, 739 based on Foata normal form. 8/3753 useless extension candidates. Maximal degree in co-relation 16031. Up to 2627 conditions per place. [2024-06-28 01:25:06,113 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 178 selfloop transitions, 98 changer transitions 0/284 dead transitions. [2024-06-28 01:25:06,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 284 transitions, 3649 flow [2024-06-28 01:25:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:25:06,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:25:06,114 INFO L175 Difference]: Start difference. First operand has 296 places, 259 transitions, 2941 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:25:06,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 284 transitions, 3649 flow [2024-06-28 01:25:06,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 284 transitions, 3607 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:06,530 INFO L231 Difference]: Finished difference. Result has 298 places, 259 transitions, 3102 flow [2024-06-28 01:25:06,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3102, PETRI_PLACES=298, PETRI_TRANSITIONS=259} [2024-06-28 01:25:06,530 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 258 predicate places. [2024-06-28 01:25:06,531 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 259 transitions, 3102 flow [2024-06-28 01:25:06,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:06,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:06,531 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 01:25:06,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:25:06,531 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:06,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash -943905531, now seen corresponding path program 5 times [2024-06-28 01:25:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:06,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356307488] [2024-06-28 01:25:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:07,900 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 01:25:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:07,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356307488] [2024-06-28 01:25:07,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356307488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:07,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:07,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:07,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737983243] [2024-06-28 01:25:07,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:07,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:07,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:07,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 259 transitions, 3102 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:07,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:07,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:07,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:09,076 INFO L124 PetriNetUnfolderBase]: 1777/4119 cut-off events. [2024-06-28 01:25:09,077 INFO L125 PetriNetUnfolderBase]: For 85782/85782 co-relation queries the response was YES. [2024-06-28 01:25:09,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16835 conditions, 4119 events. 1777/4119 cut-off events. For 85782/85782 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 34449 event pairs, 777 based on Foata normal form. 8/3884 useless extension candidates. Maximal degree in co-relation 16710. Up to 2681 conditions per place. [2024-06-28 01:25:09,123 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 148 selfloop transitions, 128 changer transitions 0/284 dead transitions. [2024-06-28 01:25:09,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 284 transitions, 3810 flow [2024-06-28 01:25:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:25:09,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:25:09,124 INFO L175 Difference]: Start difference. First operand has 298 places, 259 transitions, 3102 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:25:09,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 284 transitions, 3810 flow [2024-06-28 01:25:09,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 284 transitions, 3615 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:09,562 INFO L231 Difference]: Finished difference. Result has 299 places, 259 transitions, 3169 flow [2024-06-28 01:25:09,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3169, PETRI_PLACES=299, PETRI_TRANSITIONS=259} [2024-06-28 01:25:09,563 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-28 01:25:09,563 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 259 transitions, 3169 flow [2024-06-28 01:25:09,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:09,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:09,563 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 01:25:09,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:25:09,563 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:09,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:09,564 INFO L85 PathProgramCache]: Analyzing trace with hash -936486921, now seen corresponding path program 6 times [2024-06-28 01:25:09,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:09,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50388295] [2024-06-28 01:25:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:09,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:10,545 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 01:25:10,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:10,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50388295] [2024-06-28 01:25:10,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50388295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:10,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:10,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:10,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735193519] [2024-06-28 01:25:10,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:10,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:10,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:10,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:10,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:10,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 259 transitions, 3169 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:10,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:10,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:11,651 INFO L124 PetriNetUnfolderBase]: 1856/4305 cut-off events. [2024-06-28 01:25:11,652 INFO L125 PetriNetUnfolderBase]: For 99956/99956 co-relation queries the response was YES. [2024-06-28 01:25:11,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18075 conditions, 4305 events. 1856/4305 cut-off events. For 99956/99956 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 36429 event pairs, 811 based on Foata normal form. 6/4065 useless extension candidates. Maximal degree in co-relation 17950. Up to 2495 conditions per place. [2024-06-28 01:25:11,701 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 160 selfloop transitions, 121 changer transitions 0/289 dead transitions. [2024-06-28 01:25:11,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 289 transitions, 4093 flow [2024-06-28 01:25:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 01:25:11,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49722222222222223 [2024-06-28 01:25:11,702 INFO L175 Difference]: Start difference. First operand has 299 places, 259 transitions, 3169 flow. Second operand 10 states and 179 transitions. [2024-06-28 01:25:11,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 289 transitions, 4093 flow [2024-06-28 01:25:12,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 289 transitions, 3837 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:12,287 INFO L231 Difference]: Finished difference. Result has 299 places, 259 transitions, 3158 flow [2024-06-28 01:25:12,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3158, PETRI_PLACES=299, PETRI_TRANSITIONS=259} [2024-06-28 01:25:12,288 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-28 01:25:12,288 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 259 transitions, 3158 flow [2024-06-28 01:25:12,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:12,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:12,288 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 01:25:12,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:25:12,288 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:12,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:12,289 INFO L85 PathProgramCache]: Analyzing trace with hash 963653143, now seen corresponding path program 7 times [2024-06-28 01:25:12,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:12,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524624488] [2024-06-28 01:25:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:13,488 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 01:25:13,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:13,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524624488] [2024-06-28 01:25:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524624488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:13,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128309511] [2024-06-28 01:25:13,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:13,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:13,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 259 transitions, 3158 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:13,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:13,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:13,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:14,596 INFO L124 PetriNetUnfolderBase]: 1918/4484 cut-off events. [2024-06-28 01:25:14,597 INFO L125 PetriNetUnfolderBase]: For 111788/111788 co-relation queries the response was YES. [2024-06-28 01:25:14,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18690 conditions, 4484 events. 1918/4484 cut-off events. For 111788/111788 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 38358 event pairs, 912 based on Foata normal form. 8/4226 useless extension candidates. Maximal degree in co-relation 18564. Up to 3309 conditions per place. [2024-06-28 01:25:14,640 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 257 selfloop transitions, 25 changer transitions 0/290 dead transitions. [2024-06-28 01:25:14,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 290 transitions, 3928 flow [2024-06-28 01:25:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:25:14,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2024-06-28 01:25:14,641 INFO L175 Difference]: Start difference. First operand has 299 places, 259 transitions, 3158 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:25:14,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 290 transitions, 3928 flow [2024-06-28 01:25:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 290 transitions, 3681 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:15,181 INFO L231 Difference]: Finished difference. Result has 304 places, 263 transitions, 3008 flow [2024-06-28 01:25:15,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2917, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3008, PETRI_PLACES=304, PETRI_TRANSITIONS=263} [2024-06-28 01:25:15,182 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 264 predicate places. [2024-06-28 01:25:15,182 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 263 transitions, 3008 flow [2024-06-28 01:25:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:15,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:15,182 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 01:25:15,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:25:15,182 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:15,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:15,182 INFO L85 PathProgramCache]: Analyzing trace with hash 974704333, now seen corresponding path program 8 times [2024-06-28 01:25:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918375475] [2024-06-28 01:25:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:16,335 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 01:25:16,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:16,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918375475] [2024-06-28 01:25:16,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918375475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:16,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:16,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55238830] [2024-06-28 01:25:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:16,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:16,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:16,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 263 transitions, 3008 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:16,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:16,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:16,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:17,473 INFO L124 PetriNetUnfolderBase]: 1973/4606 cut-off events. [2024-06-28 01:25:17,473 INFO L125 PetriNetUnfolderBase]: For 112707/112707 co-relation queries the response was YES. [2024-06-28 01:25:17,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19318 conditions, 4606 events. 1973/4606 cut-off events. For 112707/112707 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39662 event pairs, 904 based on Foata normal form. 6/4356 useless extension candidates. Maximal degree in co-relation 19190. Up to 3119 conditions per place. [2024-06-28 01:25:17,531 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 268 selfloop transitions, 25 changer transitions 0/301 dead transitions. [2024-06-28 01:25:17,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 301 transitions, 3996 flow [2024-06-28 01:25:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:25:17,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-06-28 01:25:17,532 INFO L175 Difference]: Start difference. First operand has 304 places, 263 transitions, 3008 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:25:17,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 301 transitions, 3996 flow [2024-06-28 01:25:18,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 301 transitions, 3960 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:18,036 INFO L231 Difference]: Finished difference. Result has 309 places, 263 transitions, 3025 flow [2024-06-28 01:25:18,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3025, PETRI_PLACES=309, PETRI_TRANSITIONS=263} [2024-06-28 01:25:18,037 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 269 predicate places. [2024-06-28 01:25:18,037 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 263 transitions, 3025 flow [2024-06-28 01:25:18,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:18,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:18,037 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 01:25:18,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:25:18,037 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:18,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:18,038 INFO L85 PathProgramCache]: Analyzing trace with hash 963662443, now seen corresponding path program 9 times [2024-06-28 01:25:18,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:18,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482355305] [2024-06-28 01:25:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:18,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:19,283 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 01:25:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482355305] [2024-06-28 01:25:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482355305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:19,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197942562] [2024-06-28 01:25:19,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:19,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:19,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:19,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 263 transitions, 3025 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:19,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:19,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:19,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:20,521 INFO L124 PetriNetUnfolderBase]: 2025/4752 cut-off events. [2024-06-28 01:25:20,522 INFO L125 PetriNetUnfolderBase]: For 118043/118043 co-relation queries the response was YES. [2024-06-28 01:25:20,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19854 conditions, 4752 events. 2025/4752 cut-off events. For 118043/118043 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 41372 event pairs, 946 based on Foata normal form. 6/4480 useless extension candidates. Maximal degree in co-relation 19725. Up to 3411 conditions per place. [2024-06-28 01:25:20,577 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 264 selfloop transitions, 25 changer transitions 0/297 dead transitions. [2024-06-28 01:25:20,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 297 transitions, 3821 flow [2024-06-28 01:25:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:25:20,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 01:25:20,578 INFO L175 Difference]: Start difference. First operand has 309 places, 263 transitions, 3025 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:25:20,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 297 transitions, 3821 flow [2024-06-28 01:25:21,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 297 transitions, 3772 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:21,136 INFO L231 Difference]: Finished difference. Result has 312 places, 264 transitions, 3039 flow [2024-06-28 01:25:21,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3039, PETRI_PLACES=312, PETRI_TRANSITIONS=264} [2024-06-28 01:25:21,136 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 272 predicate places. [2024-06-28 01:25:21,136 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 264 transitions, 3039 flow [2024-06-28 01:25:21,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:21,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:21,137 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 01:25:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:25:21,137 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:21,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1282052403, now seen corresponding path program 10 times [2024-06-28 01:25:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845591772] [2024-06-28 01:25:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:22,195 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 01:25:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845591772] [2024-06-28 01:25:22,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845591772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:22,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:22,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:22,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521665419] [2024-06-28 01:25:22,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:22,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:22,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:22,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 264 transitions, 3039 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:22,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:22,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:22,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:23,404 INFO L124 PetriNetUnfolderBase]: 2061/4866 cut-off events. [2024-06-28 01:25:23,404 INFO L125 PetriNetUnfolderBase]: For 121589/121589 co-relation queries the response was YES. [2024-06-28 01:25:23,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20301 conditions, 4866 events. 2061/4866 cut-off events. For 121589/121589 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42763 event pairs, 951 based on Foata normal form. 6/4585 useless extension candidates. Maximal degree in co-relation 20170. Up to 3146 conditions per place. [2024-06-28 01:25:23,451 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 211 selfloop transitions, 76 changer transitions 0/295 dead transitions. [2024-06-28 01:25:23,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 295 transitions, 3985 flow [2024-06-28 01:25:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:25:23,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:25:23,452 INFO L175 Difference]: Start difference. First operand has 312 places, 264 transitions, 3039 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:25:23,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 295 transitions, 3985 flow [2024-06-28 01:25:24,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 295 transitions, 3940 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:24,006 INFO L231 Difference]: Finished difference. Result has 314 places, 264 transitions, 3149 flow [2024-06-28 01:25:24,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3149, PETRI_PLACES=314, PETRI_TRANSITIONS=264} [2024-06-28 01:25:24,007 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 274 predicate places. [2024-06-28 01:25:24,007 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 264 transitions, 3149 flow [2024-06-28 01:25:24,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:24,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:24,007 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 01:25:24,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:25:24,007 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:24,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1937480741, now seen corresponding path program 11 times [2024-06-28 01:25:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341207034] [2024-06-28 01:25:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:25,309 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 01:25:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341207034] [2024-06-28 01:25:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341207034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:25,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:25,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:25,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271061917] [2024-06-28 01:25:25,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:25,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:25,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:25,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:25,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 264 transitions, 3149 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:25,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:25,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:25,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:26,515 INFO L124 PetriNetUnfolderBase]: 2113/5004 cut-off events. [2024-06-28 01:25:26,515 INFO L125 PetriNetUnfolderBase]: For 133334/133334 co-relation queries the response was YES. [2024-06-28 01:25:26,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20947 conditions, 5004 events. 2113/5004 cut-off events. For 133334/133334 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 44407 event pairs, 1013 based on Foata normal form. 8/4713 useless extension candidates. Maximal degree in co-relation 20815. Up to 3460 conditions per place. [2024-06-28 01:25:26,578 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 205 selfloop transitions, 75 changer transitions 0/288 dead transitions. [2024-06-28 01:25:26,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 288 transitions, 3855 flow [2024-06-28 01:25:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:25:26,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 01:25:26,579 INFO L175 Difference]: Start difference. First operand has 314 places, 264 transitions, 3149 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:25:26,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 288 transitions, 3855 flow [2024-06-28 01:25:27,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 288 transitions, 3714 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:27,376 INFO L231 Difference]: Finished difference. Result has 317 places, 264 transitions, 3166 flow [2024-06-28 01:25:27,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3008, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3166, PETRI_PLACES=317, PETRI_TRANSITIONS=264} [2024-06-28 01:25:27,377 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2024-06-28 01:25:27,377 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 264 transitions, 3166 flow [2024-06-28 01:25:27,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:27,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:27,377 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 01:25:27,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:25:27,377 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:27,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1289471013, now seen corresponding path program 12 times [2024-06-28 01:25:27,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:27,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549202949] [2024-06-28 01:25:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:28,727 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 01:25:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549202949] [2024-06-28 01:25:28,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549202949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:28,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:28,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102999732] [2024-06-28 01:25:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:28,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:28,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:28,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 264 transitions, 3166 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:28,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:28,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:28,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:29,958 INFO L124 PetriNetUnfolderBase]: 2103/4986 cut-off events. [2024-06-28 01:25:29,958 INFO L125 PetriNetUnfolderBase]: For 104215/104215 co-relation queries the response was YES. [2024-06-28 01:25:30,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20194 conditions, 4986 events. 2103/4986 cut-off events. For 104215/104215 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44229 event pairs, 1005 based on Foata normal form. 8/4693 useless extension candidates. Maximal degree in co-relation 20061. Up to 3568 conditions per place. [2024-06-28 01:25:30,018 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 210 selfloop transitions, 70 changer transitions 0/288 dead transitions. [2024-06-28 01:25:30,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 288 transitions, 3872 flow [2024-06-28 01:25:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:25:30,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 01:25:30,019 INFO L175 Difference]: Start difference. First operand has 317 places, 264 transitions, 3166 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:25:30,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 288 transitions, 3872 flow [2024-06-28 01:25:30,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 288 transitions, 3722 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:30,529 INFO L231 Difference]: Finished difference. Result has 318 places, 264 transitions, 3162 flow [2024-06-28 01:25:30,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3162, PETRI_PLACES=318, PETRI_TRANSITIONS=264} [2024-06-28 01:25:30,529 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-28 01:25:30,529 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 264 transitions, 3162 flow [2024-06-28 01:25:30,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:30,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:30,530 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 01:25:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:25:30,530 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:30,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 888158343, now seen corresponding path program 13 times [2024-06-28 01:25:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147360780] [2024-06-28 01:25:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:31,494 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 01:25:31,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:31,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147360780] [2024-06-28 01:25:31,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147360780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:31,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:31,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:31,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465107034] [2024-06-28 01:25:31,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:31,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:31,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:31,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:31,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:31,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:31,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 264 transitions, 3162 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:31,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:31,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:31,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:32,729 INFO L124 PetriNetUnfolderBase]: 2155/5126 cut-off events. [2024-06-28 01:25:32,729 INFO L125 PetriNetUnfolderBase]: For 107246/107246 co-relation queries the response was YES. [2024-06-28 01:25:32,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20701 conditions, 5126 events. 2155/5126 cut-off events. For 107246/107246 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45875 event pairs, 1070 based on Foata normal form. 8/4824 useless extension candidates. Maximal degree in co-relation 20567. Up to 3764 conditions per place. [2024-06-28 01:25:32,788 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 261 selfloop transitions, 22 changer transitions 0/291 dead transitions. [2024-06-28 01:25:32,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 291 transitions, 3896 flow [2024-06-28 01:25:32,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:25:32,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 01:25:32,789 INFO L175 Difference]: Start difference. First operand has 318 places, 264 transitions, 3162 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:25:32,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 291 transitions, 3896 flow [2024-06-28 01:25:33,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 291 transitions, 3756 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:33,413 INFO L231 Difference]: Finished difference. Result has 320 places, 264 transitions, 3072 flow [2024-06-28 01:25:33,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3072, PETRI_PLACES=320, PETRI_TRANSITIONS=264} [2024-06-28 01:25:33,413 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 280 predicate places. [2024-06-28 01:25:33,413 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 264 transitions, 3072 flow [2024-06-28 01:25:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:33,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:33,414 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 01:25:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:25:33,414 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:33,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:33,414 INFO L85 PathProgramCache]: Analyzing trace with hash 649963213, now seen corresponding path program 14 times [2024-06-28 01:25:33,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:33,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709312950] [2024-06-28 01:25:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:34,447 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 01:25:34,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:34,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709312950] [2024-06-28 01:25:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709312950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415748644] [2024-06-28 01:25:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:34,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:34,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 264 transitions, 3072 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:34,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:34,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:34,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:35,636 INFO L124 PetriNetUnfolderBase]: 2234/5293 cut-off events. [2024-06-28 01:25:35,636 INFO L125 PetriNetUnfolderBase]: For 124251/124251 co-relation queries the response was YES. [2024-06-28 01:25:35,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21804 conditions, 5293 events. 2234/5293 cut-off events. For 124251/124251 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 47696 event pairs, 1059 based on Foata normal form. 6/4993 useless extension candidates. Maximal degree in co-relation 21669. Up to 3458 conditions per place. [2024-06-28 01:25:35,704 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 263 selfloop transitions, 23 changer transitions 0/294 dead transitions. [2024-06-28 01:25:35,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 294 transitions, 4022 flow [2024-06-28 01:25:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:25:35,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 01:25:35,705 INFO L175 Difference]: Start difference. First operand has 320 places, 264 transitions, 3072 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:25:35,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 294 transitions, 4022 flow [2024-06-28 01:25:36,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 294 transitions, 3957 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 01:25:36,477 INFO L231 Difference]: Finished difference. Result has 317 places, 264 transitions, 3059 flow [2024-06-28 01:25:36,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3059, PETRI_PLACES=317, PETRI_TRANSITIONS=264} [2024-06-28 01:25:36,478 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2024-06-28 01:25:36,478 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 264 transitions, 3059 flow [2024-06-28 01:25:36,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:36,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:36,478 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 01:25:36,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:25:36,478 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:36,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash 887898873, now seen corresponding path program 15 times [2024-06-28 01:25:36,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:36,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796465576] [2024-06-28 01:25:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:36,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:37,671 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 01:25:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796465576] [2024-06-28 01:25:37,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796465576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:37,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496403329] [2024-06-28 01:25:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:37,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:37,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 264 transitions, 3059 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:37,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:37,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:37,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:38,928 INFO L124 PetriNetUnfolderBase]: 2267/5424 cut-off events. [2024-06-28 01:25:38,929 INFO L125 PetriNetUnfolderBase]: For 128398/128398 co-relation queries the response was YES. [2024-06-28 01:25:38,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21839 conditions, 5424 events. 2267/5424 cut-off events. For 128398/128398 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 49373 event pairs, 1157 based on Foata normal form. 8/5106 useless extension candidates. Maximal degree in co-relation 21705. Up to 3761 conditions per place. [2024-06-28 01:25:38,985 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 254 selfloop transitions, 25 changer transitions 0/287 dead transitions. [2024-06-28 01:25:38,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 287 transitions, 3761 flow [2024-06-28 01:25:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:25:38,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:25:38,986 INFO L175 Difference]: Start difference. First operand has 317 places, 264 transitions, 3059 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:25:38,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 287 transitions, 3761 flow [2024-06-28 01:25:39,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 287 transitions, 3714 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:39,724 INFO L231 Difference]: Finished difference. Result has 318 places, 264 transitions, 3072 flow [2024-06-28 01:25:39,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3012, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3072, PETRI_PLACES=318, PETRI_TRANSITIONS=264} [2024-06-28 01:25:39,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-28 01:25:39,724 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 264 transitions, 3072 flow [2024-06-28 01:25:39,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:39,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:39,725 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 01:25:39,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:25:39,725 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:39,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:39,725 INFO L85 PathProgramCache]: Analyzing trace with hash -505205496, now seen corresponding path program 1 times [2024-06-28 01:25:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:39,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598867759] [2024-06-28 01:25:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:40,761 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 01:25:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598867759] [2024-06-28 01:25:40,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598867759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:40,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:40,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179229274] [2024-06-28 01:25:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:40,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:40,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 264 transitions, 3072 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:40,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:40,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:40,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:41,990 INFO L124 PetriNetUnfolderBase]: 2260/5387 cut-off events. [2024-06-28 01:25:41,990 INFO L125 PetriNetUnfolderBase]: For 93661/93661 co-relation queries the response was YES. [2024-06-28 01:25:42,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21258 conditions, 5387 events. 2260/5387 cut-off events. For 93661/93661 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 48869 event pairs, 1070 based on Foata normal form. 6/5069 useless extension candidates. Maximal degree in co-relation 21124. Up to 3917 conditions per place. [2024-06-28 01:25:42,061 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 249 selfloop transitions, 43 changer transitions 0/300 dead transitions. [2024-06-28 01:25:42,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 300 transitions, 3816 flow [2024-06-28 01:25:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:25:42,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-28 01:25:42,063 INFO L175 Difference]: Start difference. First operand has 318 places, 264 transitions, 3072 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:25:42,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 300 transitions, 3816 flow [2024-06-28 01:25:42,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 300 transitions, 3756 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:25:42,759 INFO L231 Difference]: Finished difference. Result has 318 places, 264 transitions, 3101 flow [2024-06-28 01:25:42,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3012, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3101, PETRI_PLACES=318, PETRI_TRANSITIONS=264} [2024-06-28 01:25:42,759 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-28 01:25:42,759 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 264 transitions, 3101 flow [2024-06-28 01:25:42,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:42,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:42,760 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 01:25:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:25:42,760 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:42,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1181837592, now seen corresponding path program 2 times [2024-06-28 01:25:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341995572] [2024-06-28 01:25:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:43,808 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 01:25:43,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:43,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341995572] [2024-06-28 01:25:43,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341995572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:43,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:43,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268479680] [2024-06-28 01:25:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:43,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:43,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:43,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:43,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 264 transitions, 3101 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:43,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:43,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:43,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:44,923 INFO L124 PetriNetUnfolderBase]: 2244/5351 cut-off events. [2024-06-28 01:25:44,923 INFO L125 PetriNetUnfolderBase]: For 91254/91254 co-relation queries the response was YES. [2024-06-28 01:25:44,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21030 conditions, 5351 events. 2244/5351 cut-off events. For 91254/91254 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 48490 event pairs, 1127 based on Foata normal form. 6/5038 useless extension candidates. Maximal degree in co-relation 20897. Up to 3825 conditions per place. [2024-06-28 01:25:44,990 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 241 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2024-06-28 01:25:44,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 291 transitions, 3823 flow [2024-06-28 01:25:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:25:44,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-28 01:25:44,991 INFO L175 Difference]: Start difference. First operand has 318 places, 264 transitions, 3101 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:25:44,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 291 transitions, 3823 flow [2024-06-28 01:25:45,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 291 transitions, 3738 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:45,558 INFO L231 Difference]: Finished difference. Result has 319 places, 264 transitions, 3105 flow [2024-06-28 01:25:45,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3105, PETRI_PLACES=319, PETRI_TRANSITIONS=264} [2024-06-28 01:25:45,558 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 279 predicate places. [2024-06-28 01:25:45,558 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 264 transitions, 3105 flow [2024-06-28 01:25:45,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:45,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:45,558 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 01:25:45,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:25:45,559 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:45,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:45,559 INFO L85 PathProgramCache]: Analyzing trace with hash 770927198, now seen corresponding path program 3 times [2024-06-28 01:25:45,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:45,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113211464] [2024-06-28 01:25:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:45,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:46,868 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 01:25:46,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:46,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113211464] [2024-06-28 01:25:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113211464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:46,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:46,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382940773] [2024-06-28 01:25:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:46,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:46,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:46,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:46,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:46,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 264 transitions, 3105 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:46,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:46,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:46,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:48,148 INFO L124 PetriNetUnfolderBase]: 2280/5440 cut-off events. [2024-06-28 01:25:48,148 INFO L125 PetriNetUnfolderBase]: For 92369/92369 co-relation queries the response was YES. [2024-06-28 01:25:48,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 5440 events. 2280/5440 cut-off events. For 92369/92369 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 49527 event pairs, 1135 based on Foata normal form. 6/5118 useless extension candidates. Maximal degree in co-relation 21118. Up to 3960 conditions per place. [2024-06-28 01:25:48,218 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 223 selfloop transitions, 63 changer transitions 0/294 dead transitions. [2024-06-28 01:25:48,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 294 transitions, 3819 flow [2024-06-28 01:25:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:25:48,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 01:25:48,219 INFO L175 Difference]: Start difference. First operand has 319 places, 264 transitions, 3105 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:25:48,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 294 transitions, 3819 flow [2024-06-28 01:25:48,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 294 transitions, 3730 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:48,986 INFO L231 Difference]: Finished difference. Result has 320 places, 264 transitions, 3145 flow [2024-06-28 01:25:48,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3145, PETRI_PLACES=320, PETRI_TRANSITIONS=264} [2024-06-28 01:25:48,987 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 280 predicate places. [2024-06-28 01:25:48,987 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 264 transitions, 3145 flow [2024-06-28 01:25:48,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:48,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:48,987 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 01:25:48,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:25:48,987 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:48,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 764498108, now seen corresponding path program 4 times [2024-06-28 01:25:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:48,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546847119] [2024-06-28 01:25:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:50,498 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 01:25:50,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:50,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546847119] [2024-06-28 01:25:50,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546847119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:50,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:50,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931339636] [2024-06-28 01:25:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:50,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:50,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:50,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:50,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 264 transitions, 3145 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:50,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:50,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:50,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:52,083 INFO L124 PetriNetUnfolderBase]: 2316/5515 cut-off events. [2024-06-28 01:25:52,083 INFO L125 PetriNetUnfolderBase]: For 91588/91588 co-relation queries the response was YES. [2024-06-28 01:25:52,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21515 conditions, 5515 events. 2316/5515 cut-off events. For 91588/91588 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 50363 event pairs, 1133 based on Foata normal form. 6/5195 useless extension candidates. Maximal degree in co-relation 21382. Up to 3899 conditions per place. [2024-06-28 01:25:52,146 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 203 selfloop transitions, 87 changer transitions 0/298 dead transitions. [2024-06-28 01:25:52,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 298 transitions, 3879 flow [2024-06-28 01:25:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:25:52,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:25:52,148 INFO L175 Difference]: Start difference. First operand has 320 places, 264 transitions, 3145 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:25:52,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 298 transitions, 3879 flow [2024-06-28 01:25:52,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 298 transitions, 3754 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:52,923 INFO L231 Difference]: Finished difference. Result has 322 places, 264 transitions, 3197 flow [2024-06-28 01:25:52,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3197, PETRI_PLACES=322, PETRI_TRANSITIONS=264} [2024-06-28 01:25:52,924 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 282 predicate places. [2024-06-28 01:25:52,924 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 264 transitions, 3197 flow [2024-06-28 01:25:52,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:52,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:52,924 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 01:25:52,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:25:52,924 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:52,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash 529890046, now seen corresponding path program 5 times [2024-06-28 01:25:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:52,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5925687] [2024-06-28 01:25:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:54,265 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 01:25:54,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5925687] [2024-06-28 01:25:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5925687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:54,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:54,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:54,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029456385] [2024-06-28 01:25:54,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:54,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:54,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:54,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:54,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 264 transitions, 3197 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:54,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:54,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:54,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:55,686 INFO L124 PetriNetUnfolderBase]: 2352/5606 cut-off events. [2024-06-28 01:25:55,687 INFO L125 PetriNetUnfolderBase]: For 93088/93088 co-relation queries the response was YES. [2024-06-28 01:25:55,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21849 conditions, 5606 events. 2352/5606 cut-off events. For 93088/93088 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51334 event pairs, 1191 based on Foata normal form. 6/5283 useless extension candidates. Maximal degree in co-relation 21715. Up to 3910 conditions per place. [2024-06-28 01:25:55,759 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 257 selfloop transitions, 38 changer transitions 0/303 dead transitions. [2024-06-28 01:25:55,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 303 transitions, 4000 flow [2024-06-28 01:25:55,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:25:55,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:25:55,760 INFO L175 Difference]: Start difference. First operand has 322 places, 264 transitions, 3197 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:25:55,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 303 transitions, 4000 flow [2024-06-28 01:25:56,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 303 transitions, 3827 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:56,454 INFO L231 Difference]: Finished difference. Result has 325 places, 265 transitions, 3129 flow [2024-06-28 01:25:56,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3129, PETRI_PLACES=325, PETRI_TRANSITIONS=265} [2024-06-28 01:25:56,455 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 285 predicate places. [2024-06-28 01:25:56,455 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 265 transitions, 3129 flow [2024-06-28 01:25:56,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:56,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:56,455 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 01:25:56,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:25:56,455 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:56,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:56,456 INFO L85 PathProgramCache]: Analyzing trace with hash 160964702, now seen corresponding path program 6 times [2024-06-28 01:25:56,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:56,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961978961] [2024-06-28 01:25:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:56,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:57,636 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 01:25:57,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:57,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961978961] [2024-06-28 01:25:57,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961978961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:57,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:57,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3412635] [2024-06-28 01:25:57,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:57,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:57,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:57,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:25:57,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 265 transitions, 3129 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:57,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:57,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:25:57,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:58,967 INFO L124 PetriNetUnfolderBase]: 2388/5693 cut-off events. [2024-06-28 01:25:58,967 INFO L125 PetriNetUnfolderBase]: For 93719/93719 co-relation queries the response was YES. [2024-06-28 01:25:59,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 5693 events. 2388/5693 cut-off events. For 93719/93719 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 52308 event pairs, 1211 based on Foata normal form. 6/5363 useless extension candidates. Maximal degree in co-relation 21863. Up to 4158 conditions per place. [2024-06-28 01:25:59,032 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 239 selfloop transitions, 51 changer transitions 0/298 dead transitions. [2024-06-28 01:25:59,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 298 transitions, 3857 flow [2024-06-28 01:25:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:25:59,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:25:59,033 INFO L175 Difference]: Start difference. First operand has 325 places, 265 transitions, 3129 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:25:59,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 298 transitions, 3857 flow [2024-06-28 01:25:59,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 298 transitions, 3795 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:59,752 INFO L231 Difference]: Finished difference. Result has 327 places, 265 transitions, 3172 flow [2024-06-28 01:25:59,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3172, PETRI_PLACES=327, PETRI_TRANSITIONS=265} [2024-06-28 01:25:59,752 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 287 predicate places. [2024-06-28 01:25:59,752 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 265 transitions, 3172 flow [2024-06-28 01:25:59,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:59,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:59,752 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 01:25:59,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:25:59,753 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:59,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:59,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1907988292, now seen corresponding path program 7 times [2024-06-28 01:25:59,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:59,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79213369] [2024-06-28 01:25:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:59,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:01,288 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 01:26:01,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79213369] [2024-06-28 01:26:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79213369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:01,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:01,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:01,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211209270] [2024-06-28 01:26:01,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:01,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:01,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:01,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:01,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:01,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 265 transitions, 3172 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:01,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:01,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:01,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:02,721 INFO L124 PetriNetUnfolderBase]: 2424/5831 cut-off events. [2024-06-28 01:26:02,721 INFO L125 PetriNetUnfolderBase]: For 95196/95196 co-relation queries the response was YES. [2024-06-28 01:26:02,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22331 conditions, 5831 events. 2424/5831 cut-off events. For 95196/95196 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 54142 event pairs, 1313 based on Foata normal form. 6/5487 useless extension candidates. Maximal degree in co-relation 22194. Up to 3865 conditions per place. [2024-06-28 01:26:02,795 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 151 selfloop transitions, 129 changer transitions 0/288 dead transitions. [2024-06-28 01:26:02,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 288 transitions, 3876 flow [2024-06-28 01:26:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:26:02,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:26:02,796 INFO L175 Difference]: Start difference. First operand has 327 places, 265 transitions, 3172 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:26:02,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 288 transitions, 3876 flow [2024-06-28 01:26:03,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 288 transitions, 3775 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:03,507 INFO L231 Difference]: Finished difference. Result has 329 places, 265 transitions, 3334 flow [2024-06-28 01:26:03,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3334, PETRI_PLACES=329, PETRI_TRANSITIONS=265} [2024-06-28 01:26:03,507 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2024-06-28 01:26:03,507 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 265 transitions, 3334 flow [2024-06-28 01:26:03,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:03,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:03,508 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 01:26:03,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:26:03,508 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:03,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1048517268, now seen corresponding path program 8 times [2024-06-28 01:26:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:03,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902182759] [2024-06-28 01:26:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:05,134 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 01:26:05,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902182759] [2024-06-28 01:26:05,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902182759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:05,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:05,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204402197] [2024-06-28 01:26:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:05,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:05,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:05,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 265 transitions, 3334 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:05,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:05,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:05,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:06,619 INFO L124 PetriNetUnfolderBase]: 2460/5900 cut-off events. [2024-06-28 01:26:06,619 INFO L125 PetriNetUnfolderBase]: For 97299/97299 co-relation queries the response was YES. [2024-06-28 01:26:06,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22756 conditions, 5900 events. 2460/5900 cut-off events. For 97299/97299 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 54912 event pairs, 1287 based on Foata normal form. 6/5557 useless extension candidates. Maximal degree in co-relation 22618. Up to 4081 conditions per place. [2024-06-28 01:26:06,697 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 176 selfloop transitions, 113 changer transitions 0/297 dead transitions. [2024-06-28 01:26:06,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 297 transitions, 4060 flow [2024-06-28 01:26:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:26:06,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 01:26:06,698 INFO L175 Difference]: Start difference. First operand has 329 places, 265 transitions, 3334 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:26:06,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 297 transitions, 4060 flow [2024-06-28 01:26:07,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 297 transitions, 3799 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:07,534 INFO L231 Difference]: Finished difference. Result has 331 places, 265 transitions, 3302 flow [2024-06-28 01:26:07,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=320, 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=3302, PETRI_PLACES=331, PETRI_TRANSITIONS=265} [2024-06-28 01:26:07,535 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 291 predicate places. [2024-06-28 01:26:07,535 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 265 transitions, 3302 flow [2024-06-28 01:26:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:07,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:07,535 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 01:26:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:26:07,535 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:07,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:07,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1334553702, now seen corresponding path program 9 times [2024-06-28 01:26:07,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:07,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162393177] [2024-06-28 01:26:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:07,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:08,754 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 01:26:08,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:08,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162393177] [2024-06-28 01:26:08,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162393177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:08,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:08,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:08,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138751721] [2024-06-28 01:26:08,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:08,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:08,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 265 transitions, 3302 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:08,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:08,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:08,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:10,159 INFO L124 PetriNetUnfolderBase]: 2460/5900 cut-off events. [2024-06-28 01:26:10,159 INFO L125 PetriNetUnfolderBase]: For 97223/97223 co-relation queries the response was YES. [2024-06-28 01:26:10,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22743 conditions, 5900 events. 2460/5900 cut-off events. For 97223/97223 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 54840 event pairs, 1348 based on Foata normal form. 6/5555 useless extension candidates. Maximal degree in co-relation 22605. Up to 4416 conditions per place. [2024-06-28 01:26:10,231 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 269 selfloop transitions, 16 changer transitions 0/293 dead transitions. [2024-06-28 01:26:10,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 293 transitions, 4008 flow [2024-06-28 01:26:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:26:10,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 01:26:10,232 INFO L175 Difference]: Start difference. First operand has 331 places, 265 transitions, 3302 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:26:10,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 293 transitions, 4008 flow [2024-06-28 01:26:10,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 293 transitions, 3783 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:10,924 INFO L231 Difference]: Finished difference. Result has 333 places, 265 transitions, 3112 flow [2024-06-28 01:26:10,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3112, PETRI_PLACES=333, PETRI_TRANSITIONS=265} [2024-06-28 01:26:10,925 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 293 predicate places. [2024-06-28 01:26:10,925 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 265 transitions, 3112 flow [2024-06-28 01:26:10,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:10,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:10,925 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 01:26:10,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:26:10,925 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:10,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1252243098, now seen corresponding path program 10 times [2024-06-28 01:26:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:10,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546900105] [2024-06-28 01:26:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:12,268 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 01:26:12,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546900105] [2024-06-28 01:26:12,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546900105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:12,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:12,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:12,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512698360] [2024-06-28 01:26:12,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:12,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:12,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:12,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:12,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 265 transitions, 3112 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:12,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:12,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:12,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:13,663 INFO L124 PetriNetUnfolderBase]: 2496/5996 cut-off events. [2024-06-28 01:26:13,663 INFO L125 PetriNetUnfolderBase]: For 97766/97766 co-relation queries the response was YES. [2024-06-28 01:26:13,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22743 conditions, 5996 events. 2496/5996 cut-off events. For 97766/97766 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 55964 event pairs, 1332 based on Foata normal form. 6/5645 useless extension candidates. Maximal degree in co-relation 22604. Up to 4361 conditions per place. [2024-06-28 01:26:13,727 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 225 selfloop transitions, 63 changer transitions 0/296 dead transitions. [2024-06-28 01:26:13,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 296 transitions, 3822 flow [2024-06-28 01:26:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:26:13,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 01:26:13,728 INFO L175 Difference]: Start difference. First operand has 333 places, 265 transitions, 3112 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:26:13,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 296 transitions, 3822 flow [2024-06-28 01:26:14,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 296 transitions, 3791 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:14,394 INFO L231 Difference]: Finished difference. Result has 335 places, 265 transitions, 3210 flow [2024-06-28 01:26:14,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3210, PETRI_PLACES=335, PETRI_TRANSITIONS=265} [2024-06-28 01:26:14,394 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 295 predicate places. [2024-06-28 01:26:14,394 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 265 transitions, 3210 flow [2024-06-28 01:26:14,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:14,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:14,394 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 01:26:14,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:26:14,395 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:14,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1258672188, now seen corresponding path program 11 times [2024-06-28 01:26:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:14,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740152659] [2024-06-28 01:26:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:14,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:15,455 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 01:26:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740152659] [2024-06-28 01:26:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740152659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:15,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:15,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778292204] [2024-06-28 01:26:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:15,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:15,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 265 transitions, 3210 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:15,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:15,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:15,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:16,741 INFO L124 PetriNetUnfolderBase]: 2532/6118 cut-off events. [2024-06-28 01:26:16,741 INFO L125 PetriNetUnfolderBase]: For 99163/99163 co-relation queries the response was YES. [2024-06-28 01:26:16,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23135 conditions, 6118 events. 2532/6118 cut-off events. For 99163/99163 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 57502 event pairs, 1422 based on Foata normal form. 6/5756 useless extension candidates. Maximal degree in co-relation 22995. Up to 4409 conditions per place. [2024-06-28 01:26:16,820 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 239 selfloop transitions, 41 changer transitions 0/288 dead transitions. [2024-06-28 01:26:16,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 288 transitions, 3910 flow [2024-06-28 01:26:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:26:16,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:26:16,821 INFO L175 Difference]: Start difference. First operand has 335 places, 265 transitions, 3210 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:26:16,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 288 transitions, 3910 flow [2024-06-28 01:26:17,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 288 transitions, 3785 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:17,574 INFO L231 Difference]: Finished difference. Result has 337 places, 266 transitions, 3188 flow [2024-06-28 01:26:17,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3085, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3188, PETRI_PLACES=337, PETRI_TRANSITIONS=266} [2024-06-28 01:26:17,574 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 297 predicate places. [2024-06-28 01:26:17,574 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 266 transitions, 3188 flow [2024-06-28 01:26:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:17,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:17,574 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 01:26:17,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:26:17,578 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:17,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1097495654, now seen corresponding path program 12 times [2024-06-28 01:26:17,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:17,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909207729] [2024-06-28 01:26:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:17,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:18,889 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 01:26:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909207729] [2024-06-28 01:26:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909207729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:18,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:18,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689521321] [2024-06-28 01:26:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:18,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:18,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:18,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 266 transitions, 3188 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:18,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:18,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:18,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:20,256 INFO L124 PetriNetUnfolderBase]: 2568/6208 cut-off events. [2024-06-28 01:26:20,256 INFO L125 PetriNetUnfolderBase]: For 100282/100282 co-relation queries the response was YES. [2024-06-28 01:26:20,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23329 conditions, 6208 events. 2568/6208 cut-off events. For 100282/100282 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58606 event pairs, 1426 based on Foata normal form. 6/5838 useless extension candidates. Maximal degree in co-relation 23187. Up to 4566 conditions per place. [2024-06-28 01:26:20,335 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 237 selfloop transitions, 48 changer transitions 0/293 dead transitions. [2024-06-28 01:26:20,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 293 transitions, 3884 flow [2024-06-28 01:26:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:26:20,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 01:26:20,336 INFO L175 Difference]: Start difference. First operand has 337 places, 266 transitions, 3188 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:26:20,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 293 transitions, 3884 flow [2024-06-28 01:26:21,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 293 transitions, 3805 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:21,153 INFO L231 Difference]: Finished difference. Result has 340 places, 266 transitions, 3208 flow [2024-06-28 01:26:21,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3208, PETRI_PLACES=340, PETRI_TRANSITIONS=266} [2024-06-28 01:26:21,153 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 300 predicate places. [2024-06-28 01:26:21,153 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 266 transitions, 3208 flow [2024-06-28 01:26:21,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:21,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:21,153 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 01:26:21,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:26:21,154 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:21,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1750705104, now seen corresponding path program 13 times [2024-06-28 01:26:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527890718] [2024-06-28 01:26:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:21,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:22,351 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 01:26:22,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:22,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527890718] [2024-06-28 01:26:22,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527890718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:22,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:22,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:22,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707620256] [2024-06-28 01:26:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:22,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:22,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:22,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:22,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:22,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:22,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 266 transitions, 3208 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:22,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:22,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:22,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:23,866 INFO L124 PetriNetUnfolderBase]: 2604/6276 cut-off events. [2024-06-28 01:26:23,867 INFO L125 PetriNetUnfolderBase]: For 100483/100483 co-relation queries the response was YES. [2024-06-28 01:26:23,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23573 conditions, 6276 events. 2604/6276 cut-off events. For 100483/100483 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 59296 event pairs, 1433 based on Foata normal form. 6/5909 useless extension candidates. Maximal degree in co-relation 23431. Up to 4560 conditions per place. [2024-06-28 01:26:23,935 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 227 selfloop transitions, 60 changer transitions 0/295 dead transitions. [2024-06-28 01:26:23,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 295 transitions, 3904 flow [2024-06-28 01:26:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:26:23,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 01:26:23,936 INFO L175 Difference]: Start difference. First operand has 340 places, 266 transitions, 3208 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:26:23,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 295 transitions, 3904 flow [2024-06-28 01:26:24,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 295 transitions, 3807 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:24,671 INFO L231 Difference]: Finished difference. Result has 341 places, 266 transitions, 3234 flow [2024-06-28 01:26:24,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3234, PETRI_PLACES=341, PETRI_TRANSITIONS=266} [2024-06-28 01:26:24,672 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 301 predicate places. [2024-06-28 01:26:24,672 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 266 transitions, 3234 flow [2024-06-28 01:26:24,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:24,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:24,672 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 01:26:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:26:24,672 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:24,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:24,672 INFO L85 PathProgramCache]: Analyzing trace with hash 143580830, now seen corresponding path program 14 times [2024-06-28 01:26:24,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:24,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837925993] [2024-06-28 01:26:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:25,870 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 01:26:25,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:25,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837925993] [2024-06-28 01:26:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837925993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:25,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:25,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:25,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831735816] [2024-06-28 01:26:25,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:25,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:25,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:25,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:25,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 266 transitions, 3234 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:25,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:25,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:25,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:27,157 INFO L124 PetriNetUnfolderBase]: 2640/6400 cut-off events. [2024-06-28 01:26:27,157 INFO L125 PetriNetUnfolderBase]: For 101973/101973 co-relation queries the response was YES. [2024-06-28 01:26:27,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23881 conditions, 6400 events. 2640/6400 cut-off events. For 101973/101973 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 60898 event pairs, 1498 based on Foata normal form. 6/6018 useless extension candidates. Maximal degree in co-relation 23738. Up to 4685 conditions per place. [2024-06-28 01:26:27,235 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 230 selfloop transitions, 55 changer transitions 0/293 dead transitions. [2024-06-28 01:26:27,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 293 transitions, 3930 flow [2024-06-28 01:26:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:27,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:26:27,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 01:26:27,236 INFO L175 Difference]: Start difference. First operand has 341 places, 266 transitions, 3234 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:26:27,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 293 transitions, 3930 flow [2024-06-28 01:26:28,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 293 transitions, 3811 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:28,142 INFO L231 Difference]: Finished difference. Result has 344 places, 266 transitions, 3228 flow [2024-06-28 01:26:28,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3228, PETRI_PLACES=344, PETRI_TRANSITIONS=266} [2024-06-28 01:26:28,143 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 304 predicate places. [2024-06-28 01:26:28,143 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 266 transitions, 3228 flow [2024-06-28 01:26:28,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:28,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:28,143 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 01:26:28,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:26:28,143 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:28,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash 137151740, now seen corresponding path program 15 times [2024-06-28 01:26:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:28,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705008916] [2024-06-28 01:26:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:28,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:30,023 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 01:26:30,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:30,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705008916] [2024-06-28 01:26:30,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705008916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:30,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:30,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:26:30,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599665679] [2024-06-28 01:26:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:30,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:26:30,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:30,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:26:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:26:30,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:26:30,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 266 transitions, 3228 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:30,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:30,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:26:30,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:31,606 INFO L124 PetriNetUnfolderBase]: 2641/6411 cut-off events. [2024-06-28 01:26:31,606 INFO L125 PetriNetUnfolderBase]: For 72853/72853 co-relation queries the response was YES. [2024-06-28 01:26:31,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23312 conditions, 6411 events. 2641/6411 cut-off events. For 72853/72853 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 61106 event pairs, 1475 based on Foata normal form. 6/6031 useless extension candidates. Maximal degree in co-relation 23168. Up to 4651 conditions per place. [2024-06-28 01:26:31,685 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 239 selfloop transitions, 49 changer transitions 0/296 dead transitions. [2024-06-28 01:26:31,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 296 transitions, 3738 flow [2024-06-28 01:26:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:26:31,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 01:26:31,686 INFO L175 Difference]: Start difference. First operand has 344 places, 266 transitions, 3228 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:26:31,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 296 transitions, 3738 flow [2024-06-28 01:26:31,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 296 transitions, 3377 flow, removed 8 selfloop flow, removed 73 redundant places. [2024-06-28 01:26:31,972 INFO L231 Difference]: Finished difference. Result has 280 places, 265 transitions, 2763 flow [2024-06-28 01:26:31,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2763, PETRI_PLACES=280, PETRI_TRANSITIONS=265} [2024-06-28 01:26:31,972 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 240 predicate places. [2024-06-28 01:26:31,973 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 265 transitions, 2763 flow [2024-06-28 01:26:31,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:31,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:31,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:31,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:26:31,973 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:31,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash 554236198, now seen corresponding path program 1 times [2024-06-28 01:26:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:31,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516664689] [2024-06-28 01:26:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:31,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:32,027 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 01:26:32,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516664689] [2024-06-28 01:26:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516664689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:32,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:32,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:26:32,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890951516] [2024-06-28 01:26:32,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:32,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:26:32,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:26:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:26:32,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:26:32,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 265 transitions, 2763 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 01:26:32,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:32,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:26:32,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:32,514 INFO L124 PetriNetUnfolderBase]: 1606/4136 cut-off events. [2024-06-28 01:26:32,514 INFO L125 PetriNetUnfolderBase]: For 17152/17156 co-relation queries the response was YES. [2024-06-28 01:26:32,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13375 conditions, 4136 events. 1606/4136 cut-off events. For 17152/17156 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 36672 event pairs, 280 based on Foata normal form. 301/4266 useless extension candidates. Maximal degree in co-relation 13295. Up to 1109 conditions per place. [2024-06-28 01:26:32,544 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 135 selfloop transitions, 91 changer transitions 1/270 dead transitions. [2024-06-28 01:26:32,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 270 transitions, 3173 flow [2024-06-28 01:26:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:26:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:26:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 01:26:32,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 01:26:32,545 INFO L175 Difference]: Start difference. First operand has 280 places, 265 transitions, 2763 flow. Second operand 5 states and 111 transitions. [2024-06-28 01:26:32,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 270 transitions, 3173 flow [2024-06-28 01:26:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 270 transitions, 2785 flow, removed 11 selfloop flow, removed 36 redundant places. [2024-06-28 01:26:32,655 INFO L231 Difference]: Finished difference. Result has 250 places, 261 transitions, 2588 flow [2024-06-28 01:26:32,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2588, PETRI_PLACES=250, PETRI_TRANSITIONS=261} [2024-06-28 01:26:32,656 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 210 predicate places. [2024-06-28 01:26:32,656 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 261 transitions, 2588 flow [2024-06-28 01:26:32,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 01:26:32,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:32,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:32,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:26:32,656 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:32,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash -245580686, now seen corresponding path program 1 times [2024-06-28 01:26:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:32,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122602505] [2024-06-28 01:26:32,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:32,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:32,775 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 01:26:32,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122602505] [2024-06-28 01:26:32,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122602505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:32,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:32,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806620551] [2024-06-28 01:26:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:26:32,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:32,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:26:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:26:32,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:26:32,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 261 transitions, 2588 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:32,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:32,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:26:32,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:33,336 INFO L124 PetriNetUnfolderBase]: 1539/3696 cut-off events. [2024-06-28 01:26:33,336 INFO L125 PetriNetUnfolderBase]: For 9256/9258 co-relation queries the response was YES. [2024-06-28 01:26:33,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12683 conditions, 3696 events. 1539/3696 cut-off events. For 9256/9258 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 30602 event pairs, 492 based on Foata normal form. 84/3671 useless extension candidates. Maximal degree in co-relation 12625. Up to 1343 conditions per place. [2024-06-28 01:26:33,359 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 55 selfloop transitions, 30 changer transitions 161/284 dead transitions. [2024-06-28 01:26:33,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 284 transitions, 3054 flow [2024-06-28 01:26:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:26:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:26:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:26:33,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:26:33,360 INFO L175 Difference]: Start difference. First operand has 250 places, 261 transitions, 2588 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:26:33,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 284 transitions, 3054 flow [2024-06-28 01:26:33,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 284 transitions, 2680 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:33,413 INFO L231 Difference]: Finished difference. Result has 255 places, 113 transitions, 924 flow [2024-06-28 01:26:33,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=924, PETRI_PLACES=255, PETRI_TRANSITIONS=113} [2024-06-28 01:26:33,413 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 215 predicate places. [2024-06-28 01:26:33,413 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 113 transitions, 924 flow [2024-06-28 01:26:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:33,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:33,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:26:33,414 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:33,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:33,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1838524872, now seen corresponding path program 2 times [2024-06-28 01:26:33,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:33,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055225967] [2024-06-28 01:26:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:33,510 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 01:26:33,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:33,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055225967] [2024-06-28 01:26:33,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055225967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:33,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:33,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:26:33,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986145721] [2024-06-28 01:26:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:33,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:26:33,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:33,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:26:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:26:33,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-28 01:26:33,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 113 transitions, 924 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 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 01:26:33,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:33,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-28 01:26:33,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:33,740 INFO L124 PetriNetUnfolderBase]: 481/1295 cut-off events. [2024-06-28 01:26:33,740 INFO L125 PetriNetUnfolderBase]: For 1438/1442 co-relation queries the response was YES. [2024-06-28 01:26:33,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3703 conditions, 1295 events. 481/1295 cut-off events. For 1438/1442 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9096 event pairs, 246 based on Foata normal form. 38/1281 useless extension candidates. Maximal degree in co-relation 3645. Up to 411 conditions per place. [2024-06-28 01:26:33,747 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 28 selfloop transitions, 3 changer transitions 77/128 dead transitions. [2024-06-28 01:26:33,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 128 transitions, 1130 flow [2024-06-28 01:26:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 01:26:33,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 01:26:33,747 INFO L175 Difference]: Start difference. First operand has 255 places, 113 transitions, 924 flow. Second operand 6 states and 126 transitions. [2024-06-28 01:26:33,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 128 transitions, 1130 flow [2024-06-28 01:26:33,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 799 flow, removed 28 selfloop flow, removed 45 redundant places. [2024-06-28 01:26:33,755 INFO L231 Difference]: Finished difference. Result has 137 places, 49 transitions, 219 flow [2024-06-28 01:26:33,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=137, PETRI_TRANSITIONS=49} [2024-06-28 01:26:33,755 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 97 predicate places. [2024-06-28 01:26:33,755 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 49 transitions, 219 flow [2024-06-28 01:26:33,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 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 01:26:33,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:33,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:26:33,755 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:33,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1638838368, now seen corresponding path program 3 times [2024-06-28 01:26:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407354942] [2024-06-28 01:26:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:34,395 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 01:26:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:34,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407354942] [2024-06-28 01:26:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407354942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:34,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:34,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814655877] [2024-06-28 01:26:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:34,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:34,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:26:34,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 49 transitions, 219 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:34,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:34,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:26:34,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:34,681 INFO L124 PetriNetUnfolderBase]: 188/513 cut-off events. [2024-06-28 01:26:34,681 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:26:34,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 513 events. 188/513 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2819 event pairs, 64 based on Foata normal form. 20/511 useless extension candidates. Maximal degree in co-relation 1136. Up to 122 conditions per place. [2024-06-28 01:26:34,683 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 17 selfloop transitions, 5 changer transitions 31/67 dead transitions. [2024-06-28 01:26:34,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 67 transitions, 347 flow [2024-06-28 01:26:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:26:34,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-28 01:26:34,684 INFO L175 Difference]: Start difference. First operand has 137 places, 49 transitions, 219 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:26:34,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 67 transitions, 347 flow [2024-06-28 01:26:34,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 67 transitions, 301 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-28 01:26:34,685 INFO L231 Difference]: Finished difference. Result has 91 places, 33 transitions, 110 flow [2024-06-28 01:26:34,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=110, PETRI_PLACES=91, PETRI_TRANSITIONS=33} [2024-06-28 01:26:34,686 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2024-06-28 01:26:34,686 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 33 transitions, 110 flow [2024-06-28 01:26:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:34,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:34,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:26:34,686 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:34,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1469705390, now seen corresponding path program 4 times [2024-06-28 01:26:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15071302] [2024-06-28 01:26:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:34,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:26:34,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-28 01:26:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:26:34,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-28 01:26:34,751 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-28 01:26:34,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-28 01:26:34,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-28 01:26:34,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-28 01:26:34,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-28 01:26:34,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-28 01:26:34,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-28 01:26:34,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-28 01:26:34,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:26:34,757 INFO L445 BasicCegarLoop]: Path program histogram: [19, 15, 15, 10, 9, 8, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:34,761 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:26:34,761 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:26:34,811 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 01:26:34,812 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 01:26:34,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:26:34 BasicIcfg [2024-06-28 01:26:34,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:26:34,813 INFO L158 Benchmark]: Toolchain (without parser) took 226862.71ms. Allocated memory was 172.0MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 109.3MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 952.5MB. Max. memory is 16.1GB. [2024-06-28 01:26:34,814 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:26:34,814 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:26:34,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.38ms. Allocated memory is still 172.0MB. Free memory was 108.8MB in the beginning and 74.5MB in the end (delta: 34.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-28 01:26:34,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.66ms. Allocated memory is still 172.0MB. Free memory was 74.5MB in the beginning and 71.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:26:34,814 INFO L158 Benchmark]: Boogie Preprocessor took 55.69ms. Allocated memory is still 172.0MB. Free memory was 71.6MB in the beginning and 67.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 01:26:34,815 INFO L158 Benchmark]: RCFGBuilder took 616.88ms. Allocated memory was 172.0MB in the beginning and 237.0MB in the end (delta: 65.0MB). Free memory was 67.8MB in the beginning and 172.4MB in the end (delta: -104.6MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2024-06-28 01:26:34,815 INFO L158 Benchmark]: TraceAbstraction took 225559.89ms. Allocated memory was 237.0MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 172.4MB in the beginning and 1.1GB in the end (delta: -971.5MB). Peak memory consumption was 948.4MB. Max. memory is 16.1GB. [2024-06-28 01:26:34,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.38ms. Allocated memory is still 172.0MB. Free memory was 108.8MB in the beginning and 74.5MB in the end (delta: 34.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.66ms. Allocated memory is still 172.0MB. Free memory was 74.5MB in the beginning and 71.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.69ms. Allocated memory is still 172.0MB. Free memory was 71.6MB in the beginning and 67.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 616.88ms. Allocated memory was 172.0MB in the beginning and 237.0MB in the end (delta: 65.0MB). Free memory was 67.8MB in the beginning and 172.4MB in the end (delta: -104.6MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. * TraceAbstraction took 225559.89ms. Allocated memory was 237.0MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 172.4MB in the beginning and 1.1GB in the end (delta: -971.5MB). Peak memory consumption was 948.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L720] 0 _Bool x$flush_delayed; [L721] 0 int x$mem_tmp; [L722] 0 _Bool x$r_buff0_thd0; [L723] 0 _Bool x$r_buff0_thd1; [L724] 0 _Bool x$r_buff0_thd2; [L725] 0 _Bool x$r_buff1_thd0; [L726] 0 _Bool x$r_buff1_thd1; [L727] 0 _Bool x$r_buff1_thd2; [L728] 0 _Bool x$read_delayed; [L729] 0 int *x$read_delayed_var; [L730] 0 int x$w_buff0; [L731] 0 _Bool x$w_buff0_used; [L732] 0 int x$w_buff1; [L733] 0 _Bool x$w_buff1_used; [L735] 0 int y = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L821] 0 pthread_t t311; [L822] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L822] FCALL, FORK 0 pthread_create(&t311, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L823] 0 pthread_t t312; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L824] 0 //@ assert ((((((((((((((((!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))) && (!multithreaded || ((x$mem_tmp == 0) || (x$mem_tmp == 1)))) && (!multithreaded || ((((((((((((((((0 <= __unbuffered_cnt) && (x$flush_delayed == (_Bool) 0)) && (x$r_buff0_thd0 == (_Bool) 0)) && (x$r_buff0_thd1 == (_Bool) 0)) && (x$r_buff1_thd0 == (_Bool) 0)) && (x$r_buff1_thd1 == (_Bool) 0)) && (x$read_delayed == (_Bool) 0)) && (x$read_delayed_var == 0)) && ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1))) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))) && ((x == 0) || (x == 1))) && ((x$mem_tmp == 0) || (x$mem_tmp == 1))) && ((x$w_buff0 == 0) || (x$w_buff0 == 1))) && ((x$w_buff1 == 0) || (x$w_buff1 == 1))) && ((y == 0) || (y == 1))))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 1)))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 1)))); [L824] FCALL, FORK 0 pthread_create(&t312, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L769] 2 x$w_buff1 = x$w_buff0 [L770] 2 x$w_buff0 = 1 [L771] 2 x$w_buff1_used = x$w_buff0_used [L772] 2 x$w_buff0_used = (_Bool)1 [L773] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L773] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L774] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L775] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L776] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L777] 2 x$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L780] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L781] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L782] 2 x$flush_delayed = weak$$choice2 [L783] 2 x$mem_tmp = x [L784] 2 x = !x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff1) [L785] 2 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff0)) [L786] 2 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff1 : x$w_buff1)) [L787] 2 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used)) [L788] 2 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L789] 2 x$r_buff0_thd2 = weak$$choice2 ? x$r_buff0_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff0_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2)) [L790] 2 x$r_buff1_thd2 = weak$$choice2 ? x$r_buff1_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff1_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L791] 2 __unbuffered_p1_EAX = x [L792] 2 x = x$flush_delayed ? x$mem_tmp : x [L793] 2 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L796] 2 __unbuffered_p1_EBX = y VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L741] 1 y = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L744] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L745] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L746] 1 x$flush_delayed = weak$$choice2 [L747] 1 x$mem_tmp = x [L748] 1 x = !x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff1) [L749] 1 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff0)) [L750] 1 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff1 : x$w_buff1)) [L751] 1 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used)) [L752] 1 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L753] 1 x$r_buff0_thd1 = weak$$choice2 ? x$r_buff0_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff0_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1)) [L754] 1 x$r_buff1_thd1 = weak$$choice2 ? x$r_buff1_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff1_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L755] 1 __unbuffered_p0_EAX = x [L756] 1 x = x$flush_delayed ? x$mem_tmp : x [L757] 1 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L799] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L800] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L801] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L802] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L803] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L825] 0 //@ assert ((((((((((((((((!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))) && (!multithreaded || ((x$mem_tmp == 0) || (x$mem_tmp == 1)))) && (!multithreaded || ((((((((((((((((0 <= __unbuffered_cnt) && (x$flush_delayed == (_Bool) 0)) && (x$r_buff0_thd0 == (_Bool) 0)) && (x$r_buff0_thd1 == (_Bool) 0)) && (x$r_buff1_thd0 == (_Bool) 0)) && (x$r_buff1_thd1 == (_Bool) 0)) && (x$read_delayed == (_Bool) 0)) && (x$read_delayed_var == 0)) && ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1))) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))) && ((x == 0) || (x == 1))) && ((x$mem_tmp == 0) || (x$mem_tmp == 1))) && ((x$w_buff0 == 0) || (x$w_buff0 == 1))) && ((x$w_buff1 == 0) || (x$w_buff1 == 1))) && ((y == 0) || (y == 1))))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 1)))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 1)))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L762] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L806] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L826] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L828] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L828] RET 0 assume_abort_if_not(main$tmp_guard0) [L830] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L831] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L832] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L833] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L834] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L837] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L839] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 824]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 825]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 824]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 822]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 54 locations, 7 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: 225.4s, OverallIterations: 119, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 116.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7702 SdHoareTripleChecker+Valid, 32.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6688 mSDsluCounter, 4031 SdHoareTripleChecker+Invalid, 28.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3656 mSDsCounter, 1303 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52691 IncrementalHoareTripleChecker+Invalid, 53994 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1303 mSolverCounterUnsat, 375 mSDtfsCounter, 52691 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1255 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 34.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3334occurred in iteration=106, InterpolantAutomatonStates: 1093, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 107.6s InterpolantComputationTime, 1905 NumberOfCodeBlocks, 1905 NumberOfCodeBlocksAsserted, 119 NumberOfCheckSat, 1761 ConstructedInterpolants, 0 QuantifiedInterpolants, 78110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 118 InterpolantComputations, 118 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 RESULT: Ultimate proved your program to be incorrect! [2024-06-28 01:26:34,860 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE