./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix051_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix051_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:35:09,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:35:09,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:35:09,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:35:09,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:35:09,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:35:09,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:35:09,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:35:09,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:35:09,454 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:35:09,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:35:09,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:35:09,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:35:09,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:35:09,455 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:35:09,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:35:09,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:35:09,456 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:35:09,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:35:09,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:35:09,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:35:09,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:35:09,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:35:09,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:35:09,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:35:09,458 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:35:09,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:35:09,458 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:35:09,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:35:09,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:35:09,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:35:09,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:35:09,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:35:09,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:35:09,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:35:09,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:35:09,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:35:09,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:35:09,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:35:09,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:35:09,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:35:09,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:35:09,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:35:09,461 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:35:09,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:35:09,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:35:09,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:35:09,655 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:35:09,655 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:35:09,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i [2024-06-27 20:35:10,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:35:10,906 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:35:10,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i [2024-06-27 20:35:10,920 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad25baa1e/0b0f3b4d8a0242239d711236d5753914/FLAG84000e49e [2024-06-27 20:35:10,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad25baa1e/0b0f3b4d8a0242239d711236d5753914 [2024-06-27 20:35:10,934 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:35:10,934 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:35:10,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix051_tso.oepc.yml/witness.yml [2024-06-27 20:35:11,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:35:11,119 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:35:11,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:35:11,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:35:11,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:35:11,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:35:10" (1/2) ... [2024-06-27 20:35:11,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb11c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:35:11, skipping insertion in model container [2024-06-27 20:35:11,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:35:10" (1/2) ... [2024-06-27 20:35:11,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@158260a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:35:11, skipping insertion in model container [2024-06-27 20:35:11,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:35:11" (2/2) ... [2024-06-27 20:35:11,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb11c5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11, skipping insertion in model container [2024-06-27 20:35:11,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:35:11" (2/2) ... [2024-06-27 20:35:11,131 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:35:11,238 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:35:11,239 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 20:35:11,239 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 20:35:11,239 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 20:35:11,239 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 20:35:11,239 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:35:11,239 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-27 20:35:11,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:35:11,527 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:35:11,535 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:35:11,637 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:35:11,665 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:35:11,665 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11 WrapperNode [2024-06-27 20:35:11,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:35:11,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:35:11,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:35:11,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:35:11,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,724 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2024-06-27 20:35:11,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:35:11,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:35:11,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:35:11,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:35:11,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,763 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]. [2024-06-27 20:35:11,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:35:11,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:35:11,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:35:11,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:35:11,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (1/1) ... [2024-06-27 20:35:11,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:35:11,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:35:11,812 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) [2024-06-27 20:35:11,829 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 [2024-06-27 20:35:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:35:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:35:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:35:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:35:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:35:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:35:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:35:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:35:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 20:35:11,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 20:35:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:35:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:35:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:35:11,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:35:11,856 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 20:35:11,978 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:35:11,980 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:35:12,337 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:35:12,337 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:35:12,475 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:35:12,475 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:35:12,475 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:35:12 BoogieIcfgContainer [2024-06-27 20:35:12,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:35:12,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:35:12,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:35:12,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:35:12,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:35:10" (1/4) ... [2024-06-27 20:35:12,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@849d0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:35:12, skipping insertion in model container [2024-06-27 20:35:12,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:35:11" (2/4) ... [2024-06-27 20:35:12,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@849d0c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:35:12, skipping insertion in model container [2024-06-27 20:35:12,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:35:11" (3/4) ... [2024-06-27 20:35:12,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@849d0c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:35:12, skipping insertion in model container [2024-06-27 20:35:12,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:35:12" (4/4) ... [2024-06-27 20:35:12,488 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_tso.oepc.i [2024-06-27 20:35:12,502 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:35:12,502 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 20:35:12,502 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:35:12,550 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:35:12,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 20:35:12,613 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-27 20:35:12,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:35:12,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:35:12,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 20:35:12,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-27 20:35:12,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:35:12,638 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;@13cb1be1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:35:12,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 20:35:12,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:35:12,642 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:35:12,642 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:35:12,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:12,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:35:12,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:12,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash 400202035, now seen corresponding path program 1 times [2024-06-27 20:35:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:12,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895051796] [2024-06-27 20:35:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:13,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895051796] [2024-06-27 20:35:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895051796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:13,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:35:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481089917] [2024-06-27 20:35:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:35:13,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:35:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:35:13,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-27 20:35:13,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:13,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:13,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-27 20:35:13,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:14,786 INFO L124 PetriNetUnfolderBase]: 8192/11588 cut-off events. [2024-06-27 20:35:14,787 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 20:35:14,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23151 conditions, 11588 events. 8192/11588 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 63990 event pairs, 6310 based on Foata normal form. 1/11373 useless extension candidates. Maximal degree in co-relation 23138. Up to 11172 conditions per place. [2024-06-27 20:35:14,856 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 42 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 20:35:14,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 225 flow [2024-06-27 20:35:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:35:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:35:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 20:35:14,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-06-27 20:35:14,868 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 93 transitions. [2024-06-27 20:35:14,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 225 flow [2024-06-27 20:35:14,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 20:35:14,877 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-27 20:35:14,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 20:35:14,882 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-27 20:35:14,882 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-27 20:35:14,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:14,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:14,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:14,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:35:14,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:14,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1952851310, now seen corresponding path program 1 times [2024-06-27 20:35:14,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:14,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400389539] [2024-06-27 20:35:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:14,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:15,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400389539] [2024-06-27 20:35:15,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400389539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:15,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:15,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:35:15,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130160922] [2024-06-27 20:35:15,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:15,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:35:15,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:35:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:35:15,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-27 20:35:15,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:15,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:15,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-27 20:35:15,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:16,835 INFO L124 PetriNetUnfolderBase]: 9577/13187 cut-off events. [2024-06-27 20:35:16,835 INFO L125 PetriNetUnfolderBase]: For 2471/2471 co-relation queries the response was YES. [2024-06-27 20:35:16,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 13187 events. 9577/13187 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70148 event pairs, 6775 based on Foata normal form. 4/13158 useless extension candidates. Maximal degree in co-relation 30024. Up to 12982 conditions per place. [2024-06-27 20:35:16,899 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 53 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-27 20:35:16,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 319 flow [2024-06-27 20:35:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:35:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:35:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 20:35:16,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-06-27 20:35:16,902 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 118 transitions. [2024-06-27 20:35:16,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 319 flow [2024-06-27 20:35:16,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:35:16,905 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-27 20:35:16,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 20:35:16,906 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-27 20:35:16,907 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-27 20:35:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:16,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:16,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:16,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:35:16,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:16,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:16,915 INFO L85 PathProgramCache]: Analyzing trace with hash -408846852, now seen corresponding path program 1 times [2024-06-27 20:35:16,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:16,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098949146] [2024-06-27 20:35:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:17,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098949146] [2024-06-27 20:35:17,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098949146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:17,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:17,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:35:17,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421266014] [2024-06-27 20:35:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:35:17,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:35:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:35:17,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-27 20:35:17,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:17,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:17,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-27 20:35:17,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:18,834 INFO L124 PetriNetUnfolderBase]: 9557/13165 cut-off events. [2024-06-27 20:35:18,834 INFO L125 PetriNetUnfolderBase]: For 7067/7067 co-relation queries the response was YES. [2024-06-27 20:35:18,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33389 conditions, 13165 events. 9557/13165 cut-off events. For 7067/7067 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70104 event pairs, 5407 based on Foata normal form. 8/13140 useless extension candidates. Maximal degree in co-relation 33375. Up to 12912 conditions per place. [2024-06-27 20:35:18,893 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 64 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-27 20:35:18,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 431 flow [2024-06-27 20:35:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:35:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:35:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-27 20:35:18,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2024-06-27 20:35:18,895 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 146 transitions. [2024-06-27 20:35:18,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 431 flow [2024-06-27 20:35:18,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 412 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 20:35:18,898 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 225 flow [2024-06-27 20:35:18,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 20:35:18,899 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-06-27 20:35:18,899 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 225 flow [2024-06-27 20:35:18,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:18,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:18,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:35:18,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:18,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1202062927, now seen corresponding path program 1 times [2024-06-27 20:35:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499493370] [2024-06-27 20:35:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:18,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:19,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:19,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499493370] [2024-06-27 20:35:19,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499493370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:19,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:35:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582537597] [2024-06-27 20:35:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:19,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:35:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:19,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:35:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:35:20,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-27 20:35:20,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:20,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:20,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-27 20:35:20,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:21,133 INFO L124 PetriNetUnfolderBase]: 9541/13143 cut-off events. [2024-06-27 20:35:21,134 INFO L125 PetriNetUnfolderBase]: For 13690/13690 co-relation queries the response was YES. [2024-06-27 20:35:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36701 conditions, 13143 events. 9541/13143 cut-off events. For 13690/13690 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 69902 event pairs, 4602 based on Foata normal form. 8/13118 useless extension candidates. Maximal degree in co-relation 36686. Up to 12846 conditions per place. [2024-06-27 20:35:21,207 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 71 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-27 20:35:21,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 515 flow [2024-06-27 20:35:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:35:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:35:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 20:35:21,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522875816993464 [2024-06-27 20:35:21,209 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 225 flow. Second operand 6 states and 169 transitions. [2024-06-27 20:35:21,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 515 flow [2024-06-27 20:35:21,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:35:21,214 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 256 flow [2024-06-27 20:35:21,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 20:35:21,215 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 20:35:21,215 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 256 flow [2024-06-27 20:35:21,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:21,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:21,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:21,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:35:21,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:21,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1198197421, now seen corresponding path program 1 times [2024-06-27 20:35:21,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:21,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820222038] [2024-06-27 20:35:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:21,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820222038] [2024-06-27 20:35:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820222038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:21,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:35:21,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136516860] [2024-06-27 20:35:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:21,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:35:21,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:35:21,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:35:21,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:35:21,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:21,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:21,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:35:21,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:22,882 INFO L124 PetriNetUnfolderBase]: 8137/11567 cut-off events. [2024-06-27 20:35:22,883 INFO L125 PetriNetUnfolderBase]: For 18131/18131 co-relation queries the response was YES. [2024-06-27 20:35:22,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34439 conditions, 11567 events. 8137/11567 cut-off events. For 18131/18131 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 64197 event pairs, 4690 based on Foata normal form. 3/11567 useless extension candidates. Maximal degree in co-relation 34422. Up to 11079 conditions per place. [2024-06-27 20:35:22,934 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 59 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-27 20:35:22,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 464 flow [2024-06-27 20:35:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:35:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:35:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 20:35:22,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745098039215686 [2024-06-27 20:35:22,936 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 256 flow. Second operand 5 states and 121 transitions. [2024-06-27 20:35:22,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 464 flow [2024-06-27 20:35:22,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 418 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:35:22,940 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 275 flow [2024-06-27 20:35:22,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-27 20:35:22,940 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 20:35:22,941 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 275 flow [2024-06-27 20:35:22,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:22,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:22,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:22,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:35:22,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:22,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:22,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1430906450, now seen corresponding path program 1 times [2024-06-27 20:35:22,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:22,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557966567] [2024-06-27 20:35:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:23,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557966567] [2024-06-27 20:35:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557966567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:23,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:35:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712543680] [2024-06-27 20:35:23,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:23,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:35:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:23,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:35:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:35:23,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:23,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 275 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) [2024-06-27 20:35:23,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:23,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:23,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:24,945 INFO L124 PetriNetUnfolderBase]: 9554/13191 cut-off events. [2024-06-27 20:35:24,945 INFO L125 PetriNetUnfolderBase]: For 30986/30986 co-relation queries the response was YES. [2024-06-27 20:35:24,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42730 conditions, 13191 events. 9554/13191 cut-off events. For 30986/30986 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70211 event pairs, 5494 based on Foata normal form. 3/13191 useless extension candidates. Maximal degree in co-relation 42711. Up to 12933 conditions per place. [2024-06-27 20:35:25,029 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 70 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-27 20:35:25,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 545 flow [2024-06-27 20:35:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:35:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:35:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 20:35:25,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405228758169936 [2024-06-27 20:35:25,031 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 275 flow. Second operand 6 states and 142 transitions. [2024-06-27 20:35:25,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 545 flow [2024-06-27 20:35:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 512 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 20:35:25,039 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 321 flow [2024-06-27 20:35:25,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-27 20:35:25,039 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 20:35:25,040 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 321 flow [2024-06-27 20:35:25,040 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) [2024-06-27 20:35:25,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:25,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:25,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:35:25,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:25,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1458761810, now seen corresponding path program 2 times [2024-06-27 20:35:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:25,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603238431] [2024-06-27 20:35:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:25,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603238431] [2024-06-27 20:35:25,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603238431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:25,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:25,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:35:25,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229577123] [2024-06-27 20:35:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:25,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:35:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:35:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:35:25,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:25,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 321 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) [2024-06-27 20:35:25,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:25,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:25,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:27,055 INFO L124 PetriNetUnfolderBase]: 9545/13200 cut-off events. [2024-06-27 20:35:27,055 INFO L125 PetriNetUnfolderBase]: For 41921/41937 co-relation queries the response was YES. [2024-06-27 20:35:27,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46032 conditions, 13200 events. 9545/13200 cut-off events. For 41921/41937 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70440 event pairs, 5476 based on Foata normal form. 15/13210 useless extension candidates. Maximal degree in co-relation 46012. Up to 12891 conditions per place. [2024-06-27 20:35:27,127 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 64 selfloop transitions, 21 changer transitions 0/91 dead transitions. [2024-06-27 20:35:27,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 593 flow [2024-06-27 20:35:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:35:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:35:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 20:35:27,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2024-06-27 20:35:27,129 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 321 flow. Second operand 6 states and 141 transitions. [2024-06-27 20:35:27,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 593 flow [2024-06-27 20:35:27,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 546 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 20:35:27,137 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 375 flow [2024-06-27 20:35:27,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-27 20:35:27,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 20:35:27,138 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 375 flow [2024-06-27 20:35:27,138 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) [2024-06-27 20:35:27,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:27,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:35:27,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:27,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -442353686, now seen corresponding path program 1 times [2024-06-27 20:35:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89458301] [2024-06-27 20:35:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89458301] [2024-06-27 20:35:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89458301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:27,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:27,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:35:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048821057] [2024-06-27 20:35:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:27,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:35:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:35:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:35:28,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:28,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 375 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:28,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:28,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:28,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:29,325 INFO L124 PetriNetUnfolderBase]: 9900/13960 cut-off events. [2024-06-27 20:35:29,326 INFO L125 PetriNetUnfolderBase]: For 54652/54652 co-relation queries the response was YES. [2024-06-27 20:35:29,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51105 conditions, 13960 events. 9900/13960 cut-off events. For 54652/54652 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 76990 event pairs, 5554 based on Foata normal form. 3/13960 useless extension candidates. Maximal degree in co-relation 51084. Up to 13410 conditions per place. [2024-06-27 20:35:29,397 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 82 selfloop transitions, 18 changer transitions 0/106 dead transitions. [2024-06-27 20:35:29,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 106 transitions, 716 flow [2024-06-27 20:35:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:35:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:35:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 20:35:29,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-27 20:35:29,398 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 375 flow. Second operand 7 states and 161 transitions. [2024-06-27 20:35:29,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 106 transitions, 716 flow [2024-06-27 20:35:29,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 642 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 20:35:29,408 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 424 flow [2024-06-27 20:35:29,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-06-27 20:35:29,409 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-27 20:35:29,409 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 424 flow [2024-06-27 20:35:29,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:29,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:29,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:29,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:35:29,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:29,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:29,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1408307914, now seen corresponding path program 1 times [2024-06-27 20:35:29,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:29,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618011168] [2024-06-27 20:35:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:29,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:30,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:30,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618011168] [2024-06-27 20:35:30,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618011168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:30,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:30,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:35:30,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636586964] [2024-06-27 20:35:30,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:30,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:35:30,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:35:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:35:30,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:30,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:30,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:30,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:30,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:31,624 INFO L124 PetriNetUnfolderBase]: 11376/15648 cut-off events. [2024-06-27 20:35:31,624 INFO L125 PetriNetUnfolderBase]: For 83526/83542 co-relation queries the response was YES. [2024-06-27 20:35:31,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62897 conditions, 15648 events. 11376/15648 cut-off events. For 83526/83542 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 84521 event pairs, 5611 based on Foata normal form. 6/15651 useless extension candidates. Maximal degree in co-relation 62874. Up to 15319 conditions per place. [2024-06-27 20:35:31,708 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 92 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-06-27 20:35:31,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 812 flow [2024-06-27 20:35:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:35:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:35:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 20:35:31,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2024-06-27 20:35:31,709 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 424 flow. Second operand 7 states and 169 transitions. [2024-06-27 20:35:31,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 812 flow [2024-06-27 20:35:31,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 121 transitions, 751 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 20:35:31,724 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 495 flow [2024-06-27 20:35:31,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-06-27 20:35:31,725 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 20:35:31,725 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 495 flow [2024-06-27 20:35:31,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:31,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:31,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:31,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:35:31,725 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:31,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1005439020, now seen corresponding path program 2 times [2024-06-27 20:35:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129155574] [2024-06-27 20:35:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:32,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:32,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129155574] [2024-06-27 20:35:32,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129155574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:32,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:32,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:35:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369572216] [2024-06-27 20:35:32,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:32,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:35:32,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:35:32,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:35:32,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:32,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 495 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:32,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:32,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:32,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:34,051 INFO L124 PetriNetUnfolderBase]: 11671/16089 cut-off events. [2024-06-27 20:35:34,051 INFO L125 PetriNetUnfolderBase]: For 109323/109339 co-relation queries the response was YES. [2024-06-27 20:35:34,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70235 conditions, 16089 events. 11671/16089 cut-off events. For 109323/109339 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 87111 event pairs, 5097 based on Foata normal form. 28/16114 useless extension candidates. Maximal degree in co-relation 70210. Up to 15533 conditions per place. [2024-06-27 20:35:34,138 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 94 selfloop transitions, 32 changer transitions 0/133 dead transitions. [2024-06-27 20:35:34,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 133 transitions, 1031 flow [2024-06-27 20:35:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:35:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:35:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 20:35:34,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2024-06-27 20:35:34,139 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 495 flow. Second operand 7 states and 174 transitions. [2024-06-27 20:35:34,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 133 transitions, 1031 flow [2024-06-27 20:35:34,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 967 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 20:35:34,157 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 653 flow [2024-06-27 20:35:34,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-06-27 20:35:34,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-27 20:35:34,158 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 653 flow [2024-06-27 20:35:34,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:34,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:34,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:34,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:35:34,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:34,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -828307500, now seen corresponding path program 3 times [2024-06-27 20:35:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30365000] [2024-06-27 20:35:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:34,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30365000] [2024-06-27 20:35:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30365000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:34,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:34,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:35:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250517475] [2024-06-27 20:35:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:34,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:35:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:34,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:35:34,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:35:34,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:34,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:34,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:34,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:34,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:36,717 INFO L124 PetriNetUnfolderBase]: 11688/16094 cut-off events. [2024-06-27 20:35:36,717 INFO L125 PetriNetUnfolderBase]: For 139884/139902 co-relation queries the response was YES. [2024-06-27 20:35:36,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76124 conditions, 16094 events. 11688/16094 cut-off events. For 139884/139902 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 87190 event pairs, 4844 based on Foata normal form. 28/16113 useless extension candidates. Maximal degree in co-relation 76097. Up to 15325 conditions per place. [2024-06-27 20:35:36,820 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 86 selfloop transitions, 51 changer transitions 0/144 dead transitions. [2024-06-27 20:35:36,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 144 transitions, 1301 flow [2024-06-27 20:35:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:35:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:35:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 20:35:36,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014005602240896 [2024-06-27 20:35:36,822 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 653 flow. Second operand 7 states and 179 transitions. [2024-06-27 20:35:36,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 144 transitions, 1301 flow [2024-06-27 20:35:36,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 144 transitions, 1233 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 20:35:36,855 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 862 flow [2024-06-27 20:35:36,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=862, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2024-06-27 20:35:36,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 20:35:36,856 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 862 flow [2024-06-27 20:35:36,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:36,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:36,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:36,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:35:36,857 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:36,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash 27245418, now seen corresponding path program 1 times [2024-06-27 20:35:36,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:36,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643450295] [2024-06-27 20:35:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:37,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:37,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643450295] [2024-06-27 20:35:37,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643450295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:37,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:37,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:35:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078237238] [2024-06-27 20:35:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:37,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:35:37,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:35:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:35:37,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:37,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 862 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:37,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:37,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:37,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:39,467 INFO L124 PetriNetUnfolderBase]: 10292/14422 cut-off events. [2024-06-27 20:35:39,467 INFO L125 PetriNetUnfolderBase]: For 140103/140103 co-relation queries the response was YES. [2024-06-27 20:35:39,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70996 conditions, 14422 events. 10292/14422 cut-off events. For 140103/140103 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 79228 event pairs, 4453 based on Foata normal form. 6/14425 useless extension candidates. Maximal degree in co-relation 70966. Up to 13917 conditions per place. [2024-06-27 20:35:39,551 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 118 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2024-06-27 20:35:39,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 145 transitions, 1296 flow [2024-06-27 20:35:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:35:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:35:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 20:35:39,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485294117647059 [2024-06-27 20:35:39,554 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 862 flow. Second operand 8 states and 183 transitions. [2024-06-27 20:35:39,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 145 transitions, 1296 flow [2024-06-27 20:35:39,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1147 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 20:35:39,619 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 827 flow [2024-06-27 20:35:39,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-06-27 20:35:39,620 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-27 20:35:39,620 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 827 flow [2024-06-27 20:35:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:39,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:39,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:35:39,620 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:39,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1350681795, now seen corresponding path program 1 times [2024-06-27 20:35:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753793728] [2024-06-27 20:35:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:40,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:40,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753793728] [2024-06-27 20:35:40,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753793728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:40,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:40,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:35:40,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031504196] [2024-06-27 20:35:40,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:40,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:35:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:35:40,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:35:40,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:40,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 827 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:40,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:40,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:40,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:41,629 INFO L124 PetriNetUnfolderBase]: 10278/14660 cut-off events. [2024-06-27 20:35:41,629 INFO L125 PetriNetUnfolderBase]: For 144046/144046 co-relation queries the response was YES. [2024-06-27 20:35:41,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70644 conditions, 14660 events. 10278/14660 cut-off events. For 144046/144046 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 81905 event pairs, 4511 based on Foata normal form. 4/14661 useless extension candidates. Maximal degree in co-relation 70613. Up to 13956 conditions per place. [2024-06-27 20:35:41,739 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 109 selfloop transitions, 10 changer transitions 0/125 dead transitions. [2024-06-27 20:35:41,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 1149 flow [2024-06-27 20:35:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:35:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:35:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-27 20:35:41,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470588235294118 [2024-06-27 20:35:41,741 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 827 flow. Second operand 5 states and 114 transitions. [2024-06-27 20:35:41,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 1149 flow [2024-06-27 20:35:41,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 1065 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 20:35:41,810 INFO L231 Difference]: Finished difference. Result has 88 places, 110 transitions, 826 flow [2024-06-27 20:35:41,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=88, PETRI_TRANSITIONS=110} [2024-06-27 20:35:41,811 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-06-27 20:35:41,811 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 110 transitions, 826 flow [2024-06-27 20:35:41,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:41,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:41,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:41,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:35:41,812 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:41,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1107560413, now seen corresponding path program 1 times [2024-06-27 20:35:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039433837] [2024-06-27 20:35:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:42,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039433837] [2024-06-27 20:35:42,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039433837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:42,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:35:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249573776] [2024-06-27 20:35:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:42,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:35:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:35:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:35:42,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:42,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 110 transitions, 826 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:42,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:42,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:42,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:44,442 INFO L124 PetriNetUnfolderBase]: 11600/15970 cut-off events. [2024-06-27 20:35:44,442 INFO L125 PetriNetUnfolderBase]: For 196704/196704 co-relation queries the response was YES. [2024-06-27 20:35:44,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84387 conditions, 15970 events. 11600/15970 cut-off events. For 196704/196704 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 86683 event pairs, 5068 based on Foata normal form. 3/15970 useless extension candidates. Maximal degree in co-relation 84355. Up to 15613 conditions per place. [2024-06-27 20:35:44,583 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 120 selfloop transitions, 25 changer transitions 0/152 dead transitions. [2024-06-27 20:35:44,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 152 transitions, 1285 flow [2024-06-27 20:35:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:35:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:35:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 20:35:44,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2024-06-27 20:35:44,585 INFO L175 Difference]: Start difference. First operand has 88 places, 110 transitions, 826 flow. Second operand 7 states and 169 transitions. [2024-06-27 20:35:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 152 transitions, 1285 flow [2024-06-27 20:35:44,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 1232 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 20:35:44,658 INFO L231 Difference]: Finished difference. Result has 92 places, 114 transitions, 916 flow [2024-06-27 20:35:44,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=916, PETRI_PLACES=92, PETRI_TRANSITIONS=114} [2024-06-27 20:35:44,658 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-27 20:35:44,659 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 114 transitions, 916 flow [2024-06-27 20:35:44,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:44,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:44,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:44,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:35:44,659 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:44,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1103831671, now seen corresponding path program 1 times [2024-06-27 20:35:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:44,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400644193] [2024-06-27 20:35:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:44,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:45,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:45,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400644193] [2024-06-27 20:35:45,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400644193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:45,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:45,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:35:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239342580] [2024-06-27 20:35:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:45,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:35:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:45,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:35:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:35:45,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:35:45,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 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) [2024-06-27 20:35:45,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:45,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:35:45,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:47,315 INFO L124 PetriNetUnfolderBase]: 11913/16340 cut-off events. [2024-06-27 20:35:47,315 INFO L125 PetriNetUnfolderBase]: For 208799/208799 co-relation queries the response was YES. [2024-06-27 20:35:47,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85181 conditions, 16340 events. 11913/16340 cut-off events. For 208799/208799 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 86424 event pairs, 4954 based on Foata normal form. 9/16346 useless extension candidates. Maximal degree in co-relation 85148. Up to 15784 conditions per place. [2024-06-27 20:35:47,445 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 121 selfloop transitions, 48 changer transitions 0/174 dead transitions. [2024-06-27 20:35:47,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 1522 flow [2024-06-27 20:35:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:35:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:35:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 20:35:47,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 20:35:47,447 INFO L175 Difference]: Start difference. First operand has 92 places, 114 transitions, 916 flow. Second operand 8 states and 187 transitions. [2024-06-27 20:35:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 1522 flow [2024-06-27 20:35:47,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 1372 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 20:35:47,551 INFO L231 Difference]: Finished difference. Result has 96 places, 129 transitions, 1042 flow [2024-06-27 20:35:47,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1042, PETRI_PLACES=96, PETRI_TRANSITIONS=129} [2024-06-27 20:35:47,552 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 20:35:47,552 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 129 transitions, 1042 flow [2024-06-27 20:35:47,552 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) [2024-06-27 20:35:47,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:47,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:47,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:35:47,553 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:47,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1710795505, now seen corresponding path program 2 times [2024-06-27 20:35:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341175413] [2024-06-27 20:35:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:47,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:48,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:48,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341175413] [2024-06-27 20:35:48,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341175413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:48,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:48,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:35:48,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143387254] [2024-06-27 20:35:48,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:48,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:35:48,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:35:48,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:35:48,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:35:48,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 129 transitions, 1042 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) [2024-06-27 20:35:48,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:48,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:35:48,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:50,213 INFO L124 PetriNetUnfolderBase]: 12045/16527 cut-off events. [2024-06-27 20:35:50,213 INFO L125 PetriNetUnfolderBase]: For 229030/229048 co-relation queries the response was YES. [2024-06-27 20:35:50,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88079 conditions, 16527 events. 12045/16527 cut-off events. For 229030/229048 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 87220 event pairs, 4981 based on Foata normal form. 19/16537 useless extension candidates. Maximal degree in co-relation 88044. Up to 15807 conditions per place. [2024-06-27 20:35:50,331 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 115 selfloop transitions, 68 changer transitions 0/188 dead transitions. [2024-06-27 20:35:50,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 1664 flow [2024-06-27 20:35:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:35:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:35:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 20:35:50,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2024-06-27 20:35:50,332 INFO L175 Difference]: Start difference. First operand has 96 places, 129 transitions, 1042 flow. Second operand 8 states and 190 transitions. [2024-06-27 20:35:50,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 1664 flow [2024-06-27 20:35:50,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 188 transitions, 1590 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 20:35:50,453 INFO L231 Difference]: Finished difference. Result has 101 places, 145 transitions, 1279 flow [2024-06-27 20:35:50,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1279, PETRI_PLACES=101, PETRI_TRANSITIONS=145} [2024-06-27 20:35:50,453 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-27 20:35:50,453 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 145 transitions, 1279 flow [2024-06-27 20:35:50,454 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) [2024-06-27 20:35:50,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:50,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:50,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:35:50,454 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:50,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 855698101, now seen corresponding path program 3 times [2024-06-27 20:35:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:50,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594801481] [2024-06-27 20:35:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:50,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594801481] [2024-06-27 20:35:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594801481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:51,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:51,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:35:51,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81934697] [2024-06-27 20:35:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:35:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:35:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:35:51,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:35:51,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 145 transitions, 1279 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) [2024-06-27 20:35:51,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:51,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:35:51,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:53,155 INFO L124 PetriNetUnfolderBase]: 12067/16557 cut-off events. [2024-06-27 20:35:53,155 INFO L125 PetriNetUnfolderBase]: For 249956/249974 co-relation queries the response was YES. [2024-06-27 20:35:53,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90747 conditions, 16557 events. 12067/16557 cut-off events. For 249956/249974 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 87425 event pairs, 4957 based on Foata normal form. 13/16561 useless extension candidates. Maximal degree in co-relation 90709. Up to 15665 conditions per place. [2024-06-27 20:35:53,286 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 104 selfloop transitions, 91 changer transitions 0/200 dead transitions. [2024-06-27 20:35:53,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 200 transitions, 2011 flow [2024-06-27 20:35:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:35:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:35:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 20:35:53,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-06-27 20:35:53,288 INFO L175 Difference]: Start difference. First operand has 101 places, 145 transitions, 1279 flow. Second operand 8 states and 191 transitions. [2024-06-27 20:35:53,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 200 transitions, 2011 flow [2024-06-27 20:35:53,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 200 transitions, 1906 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 20:35:53,460 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1484 flow [2024-06-27 20:35:53,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1484, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2024-06-27 20:35:53,460 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-27 20:35:53,460 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1484 flow [2024-06-27 20:35:53,461 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) [2024-06-27 20:35:53,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:53,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:53,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:35:53,461 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:53,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash 837182461, now seen corresponding path program 4 times [2024-06-27 20:35:53,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:53,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422303326] [2024-06-27 20:35:53,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:53,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:54,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422303326] [2024-06-27 20:35:54,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422303326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:54,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:54,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:35:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861102671] [2024-06-27 20:35:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:54,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:35:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:35:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:35:54,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:35:54,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1484 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) [2024-06-27 20:35:54,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:54,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:35:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:56,253 INFO L124 PetriNetUnfolderBase]: 12028/16503 cut-off events. [2024-06-27 20:35:56,253 INFO L125 PetriNetUnfolderBase]: For 267384/267402 co-relation queries the response was YES. [2024-06-27 20:35:56,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91917 conditions, 16503 events. 12028/16503 cut-off events. For 267384/267402 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 87194 event pairs, 4957 based on Foata normal form. 19/16513 useless extension candidates. Maximal degree in co-relation 91877. Up to 15783 conditions per place. [2024-06-27 20:35:56,385 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 120 selfloop transitions, 74 changer transitions 0/199 dead transitions. [2024-06-27 20:35:56,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 199 transitions, 2009 flow [2024-06-27 20:35:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:35:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:35:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 20:35:56,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2024-06-27 20:35:56,386 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1484 flow. Second operand 8 states and 189 transitions. [2024-06-27 20:35:56,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 199 transitions, 2009 flow [2024-06-27 20:35:56,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 199 transitions, 1820 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-27 20:35:56,625 INFO L231 Difference]: Finished difference. Result has 111 places, 154 transitions, 1456 flow [2024-06-27 20:35:56,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1456, PETRI_PLACES=111, PETRI_TRANSITIONS=154} [2024-06-27 20:35:56,626 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 20:35:56,626 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 154 transitions, 1456 flow [2024-06-27 20:35:56,626 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) [2024-06-27 20:35:56,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:35:56,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:35:56,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:35:56,627 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:35:56,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:35:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1312130567, now seen corresponding path program 1 times [2024-06-27 20:35:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:35:56,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213983724] [2024-06-27 20:35:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:35:56,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:35:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:35:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:35:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:35:57,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213983724] [2024-06-27 20:35:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213983724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:35:57,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:35:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:35:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749290885] [2024-06-27 20:35:57,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:35:57,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:35:57,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:35:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:35:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:35:57,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:35:57,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 154 transitions, 1456 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:35:57,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:35:57,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:35:57,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:35:59,664 INFO L124 PetriNetUnfolderBase]: 11671/16185 cut-off events. [2024-06-27 20:35:59,664 INFO L125 PetriNetUnfolderBase]: For 290251/290351 co-relation queries the response was YES. [2024-06-27 20:35:59,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92210 conditions, 16185 events. 11671/16185 cut-off events. For 290251/290351 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 88411 event pairs, 4779 based on Foata normal form. 30/16212 useless extension candidates. Maximal degree in co-relation 92169. Up to 15674 conditions per place. [2024-06-27 20:35:59,804 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 181 selfloop transitions, 43 changer transitions 0/233 dead transitions. [2024-06-27 20:35:59,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 233 transitions, 2340 flow [2024-06-27 20:35:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:35:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:35:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 20:35:59,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-27 20:35:59,806 INFO L175 Difference]: Start difference. First operand has 111 places, 154 transitions, 1456 flow. Second operand 9 states and 216 transitions. [2024-06-27 20:35:59,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 233 transitions, 2340 flow [2024-06-27 20:36:00,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 233 transitions, 2074 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:36:00,017 INFO L231 Difference]: Finished difference. Result has 115 places, 181 transitions, 1630 flow [2024-06-27 20:36:00,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1630, PETRI_PLACES=115, PETRI_TRANSITIONS=181} [2024-06-27 20:36:00,018 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 20:36:00,018 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 181 transitions, 1630 flow [2024-06-27 20:36:00,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:00,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:00,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:00,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:36:00,018 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:00,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash 25363731, now seen corresponding path program 2 times [2024-06-27 20:36:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:00,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923146893] [2024-06-27 20:36:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923146893] [2024-06-27 20:36:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923146893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066442361] [2024-06-27 20:36:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:01,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:36:01,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 181 transitions, 1630 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:01,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:01,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:36:01,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:03,000 INFO L124 PetriNetUnfolderBase]: 11744/16314 cut-off events. [2024-06-27 20:36:03,000 INFO L125 PetriNetUnfolderBase]: For 326087/326195 co-relation queries the response was YES. [2024-06-27 20:36:03,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96232 conditions, 16314 events. 11744/16314 cut-off events. For 326087/326195 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 89217 event pairs, 3934 based on Foata normal form. 38/16349 useless extension candidates. Maximal degree in co-relation 96187. Up to 15688 conditions per place. [2024-06-27 20:36:03,152 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 175 selfloop transitions, 47 changer transitions 0/231 dead transitions. [2024-06-27 20:36:03,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 231 transitions, 2300 flow [2024-06-27 20:36:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:36:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:36:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 20:36:03,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2024-06-27 20:36:03,154 INFO L175 Difference]: Start difference. First operand has 115 places, 181 transitions, 1630 flow. Second operand 8 states and 190 transitions. [2024-06-27 20:36:03,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 231 transitions, 2300 flow [2024-06-27 20:36:03,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 231 transitions, 2198 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 20:36:03,466 INFO L231 Difference]: Finished difference. Result has 120 places, 184 transitions, 1714 flow [2024-06-27 20:36:03,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1714, PETRI_PLACES=120, PETRI_TRANSITIONS=184} [2024-06-27 20:36:03,467 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-27 20:36:03,467 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 184 transitions, 1714 flow [2024-06-27 20:36:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:03,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:03,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:03,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:36:03,467 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:03,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 22685331, now seen corresponding path program 3 times [2024-06-27 20:36:03,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:03,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574211536] [2024-06-27 20:36:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:04,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:04,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574211536] [2024-06-27 20:36:04,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574211536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:04,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:04,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:04,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083436077] [2024-06-27 20:36:04,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:04,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:04,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:04,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:04,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:04,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:36:04,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 184 transitions, 1714 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:04,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:04,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:36:04,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:06,507 INFO L124 PetriNetUnfolderBase]: 11808/16411 cut-off events. [2024-06-27 20:36:06,507 INFO L125 PetriNetUnfolderBase]: For 369014/369122 co-relation queries the response was YES. [2024-06-27 20:36:06,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100092 conditions, 16411 events. 11808/16411 cut-off events. For 369014/369122 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 90073 event pairs, 4461 based on Foata normal form. 44/16447 useless extension candidates. Maximal degree in co-relation 100046. Up to 15784 conditions per place. [2024-06-27 20:36:06,652 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 173 selfloop transitions, 52 changer transitions 0/234 dead transitions. [2024-06-27 20:36:06,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 234 transitions, 2398 flow [2024-06-27 20:36:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:36:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:36:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 20:36:06,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-06-27 20:36:06,653 INFO L175 Difference]: Start difference. First operand has 120 places, 184 transitions, 1714 flow. Second operand 8 states and 191 transitions. [2024-06-27 20:36:06,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 234 transitions, 2398 flow [2024-06-27 20:36:07,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 234 transitions, 2234 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 20:36:07,005 INFO L231 Difference]: Finished difference. Result has 122 places, 187 transitions, 1751 flow [2024-06-27 20:36:07,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1751, PETRI_PLACES=122, PETRI_TRANSITIONS=187} [2024-06-27 20:36:07,006 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-27 20:36:07,006 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 187 transitions, 1751 flow [2024-06-27 20:36:07,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:07,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:07,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:07,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:36:07,006 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:07,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash 584527915, now seen corresponding path program 4 times [2024-06-27 20:36:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:07,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470639898] [2024-06-27 20:36:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470639898] [2024-06-27 20:36:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470639898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838614733] [2024-06-27 20:36:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:08,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:08,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:08,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:36:08,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 187 transitions, 1751 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:08,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:08,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:36:08,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:10,238 INFO L124 PetriNetUnfolderBase]: 12036/16740 cut-off events. [2024-06-27 20:36:10,238 INFO L125 PetriNetUnfolderBase]: For 387344/387448 co-relation queries the response was YES. [2024-06-27 20:36:10,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102188 conditions, 16740 events. 12036/16740 cut-off events. For 387344/387448 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 91829 event pairs, 4496 based on Foata normal form. 108/16845 useless extension candidates. Maximal degree in co-relation 102141. Up to 15774 conditions per place. [2024-06-27 20:36:10,417 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 159 selfloop transitions, 69 changer transitions 0/237 dead transitions. [2024-06-27 20:36:10,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 237 transitions, 2441 flow [2024-06-27 20:36:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:36:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:36:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 20:36:10,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284313725490197 [2024-06-27 20:36:10,418 INFO L175 Difference]: Start difference. First operand has 122 places, 187 transitions, 1751 flow. Second operand 8 states and 197 transitions. [2024-06-27 20:36:10,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 237 transitions, 2441 flow [2024-06-27 20:36:10,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 237 transitions, 2278 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 20:36:10,829 INFO L231 Difference]: Finished difference. Result has 124 places, 190 transitions, 1823 flow [2024-06-27 20:36:10,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1823, PETRI_PLACES=124, PETRI_TRANSITIONS=190} [2024-06-27 20:36:10,829 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-27 20:36:10,830 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 190 transitions, 1823 flow [2024-06-27 20:36:10,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:10,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:10,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:10,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:36:10,830 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:10,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:10,830 INFO L85 PathProgramCache]: Analyzing trace with hash 584712613, now seen corresponding path program 1 times [2024-06-27 20:36:10,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:10,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861091014] [2024-06-27 20:36:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:10,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:11,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:11,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861091014] [2024-06-27 20:36:11,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861091014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:11,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530466058] [2024-06-27 20:36:11,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:11,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:11,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:11,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:12,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:36:12,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 190 transitions, 1823 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) [2024-06-27 20:36:12,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:12,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:36:12,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:14,186 INFO L124 PetriNetUnfolderBase]: 12668/17445 cut-off events. [2024-06-27 20:36:14,186 INFO L125 PetriNetUnfolderBase]: For 416937/416953 co-relation queries the response was YES. [2024-06-27 20:36:14,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107183 conditions, 17445 events. 12668/17445 cut-off events. For 416937/416953 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 93062 event pairs, 4717 based on Foata normal form. 22/17459 useless extension candidates. Maximal degree in co-relation 107135. Up to 17099 conditions per place. [2024-06-27 20:36:14,364 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 215 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-27 20:36:14,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 249 transitions, 2595 flow [2024-06-27 20:36:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:36:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:36:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-27 20:36:14,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357298474945534 [2024-06-27 20:36:14,365 INFO L175 Difference]: Start difference. First operand has 124 places, 190 transitions, 1823 flow. Second operand 9 states and 200 transitions. [2024-06-27 20:36:14,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 249 transitions, 2595 flow [2024-06-27 20:36:14,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 249 transitions, 2402 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 20:36:14,928 INFO L231 Difference]: Finished difference. Result has 129 places, 198 transitions, 1839 flow [2024-06-27 20:36:14,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1839, PETRI_PLACES=129, PETRI_TRANSITIONS=198} [2024-06-27 20:36:14,929 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-27 20:36:14,929 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 198 transitions, 1839 flow [2024-06-27 20:36:14,929 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) [2024-06-27 20:36:14,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:14,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:14,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:36:14,929 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:14,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1735151092, now seen corresponding path program 1 times [2024-06-27 20:36:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:14,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146646787] [2024-06-27 20:36:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:14,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:15,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:15,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146646787] [2024-06-27 20:36:15,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146646787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:15,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:15,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:36:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304092057] [2024-06-27 20:36:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:15,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:36:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:36:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:36:15,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:36:15,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 198 transitions, 1839 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:15,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:15,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:36:15,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:18,056 INFO L124 PetriNetUnfolderBase]: 12700/17490 cut-off events. [2024-06-27 20:36:18,056 INFO L125 PetriNetUnfolderBase]: For 445696/445712 co-relation queries the response was YES. [2024-06-27 20:36:18,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109227 conditions, 17490 events. 12700/17490 cut-off events. For 445696/445712 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 93265 event pairs, 4681 based on Foata normal form. 20/17504 useless extension candidates. Maximal degree in co-relation 109176. Up to 17154 conditions per place. [2024-06-27 20:36:18,227 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 207 selfloop transitions, 25 changer transitions 0/237 dead transitions. [2024-06-27 20:36:18,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 237 transitions, 2619 flow [2024-06-27 20:36:18,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:36:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:36:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 20:36:18,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-06-27 20:36:18,230 INFO L175 Difference]: Start difference. First operand has 129 places, 198 transitions, 1839 flow. Second operand 6 states and 140 transitions. [2024-06-27 20:36:18,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 237 transitions, 2619 flow [2024-06-27 20:36:18,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 237 transitions, 2504 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 20:36:18,750 INFO L231 Difference]: Finished difference. Result has 130 places, 206 transitions, 1920 flow [2024-06-27 20:36:18,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1920, PETRI_PLACES=130, PETRI_TRANSITIONS=206} [2024-06-27 20:36:18,751 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-27 20:36:18,751 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 206 transitions, 1920 flow [2024-06-27 20:36:18,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:18,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:18,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:18,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:36:18,751 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:18,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash 176412849, now seen corresponding path program 5 times [2024-06-27 20:36:18,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:18,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549923658] [2024-06-27 20:36:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:20,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:20,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549923658] [2024-06-27 20:36:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549923658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:20,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:20,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339706555] [2024-06-27 20:36:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:20,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:20,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:20,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:36:20,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 206 transitions, 1920 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:20,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:20,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:36:20,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:22,536 INFO L124 PetriNetUnfolderBase]: 12088/16846 cut-off events. [2024-06-27 20:36:22,536 INFO L125 PetriNetUnfolderBase]: For 488672/488772 co-relation queries the response was YES. [2024-06-27 20:36:22,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110658 conditions, 16846 events. 12088/16846 cut-off events. For 488672/488772 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 92837 event pairs, 4467 based on Foata normal form. 81/16878 useless extension candidates. Maximal degree in co-relation 110606. Up to 16024 conditions per place. [2024-06-27 20:36:22,699 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 152 selfloop transitions, 88 changer transitions 0/250 dead transitions. [2024-06-27 20:36:22,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 250 transitions, 2620 flow [2024-06-27 20:36:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:36:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:36:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 20:36:22,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2024-06-27 20:36:22,701 INFO L175 Difference]: Start difference. First operand has 130 places, 206 transitions, 1920 flow. Second operand 8 states and 190 transitions. [2024-06-27 20:36:22,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 250 transitions, 2620 flow [2024-06-27 20:36:23,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 250 transitions, 2550 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 20:36:23,100 INFO L231 Difference]: Finished difference. Result has 136 places, 209 transitions, 2134 flow [2024-06-27 20:36:23,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2134, PETRI_PLACES=136, PETRI_TRANSITIONS=209} [2024-06-27 20:36:23,100 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 20:36:23,101 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 209 transitions, 2134 flow [2024-06-27 20:36:23,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:23,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:23,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:36:23,101 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:23,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash 750351747, now seen corresponding path program 2 times [2024-06-27 20:36:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155538900] [2024-06-27 20:36:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:24,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155538900] [2024-06-27 20:36:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155538900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:24,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:24,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:24,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213905150] [2024-06-27 20:36:24,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:24,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:24,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:24,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:36:24,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 209 transitions, 2134 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) [2024-06-27 20:36:24,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:24,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:36:24,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:26,721 INFO L124 PetriNetUnfolderBase]: 12706/17505 cut-off events. [2024-06-27 20:36:26,721 INFO L125 PetriNetUnfolderBase]: For 529514/529558 co-relation queries the response was YES. [2024-06-27 20:36:26,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115863 conditions, 17505 events. 12706/17505 cut-off events. For 529514/529558 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 93371 event pairs, 4695 based on Foata normal form. 38/17536 useless extension candidates. Maximal degree in co-relation 115809. Up to 17076 conditions per place. [2024-06-27 20:36:26,894 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 216 selfloop transitions, 45 changer transitions 0/266 dead transitions. [2024-06-27 20:36:26,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 266 transitions, 2942 flow [2024-06-27 20:36:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:36:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:36:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 20:36:26,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-06-27 20:36:26,895 INFO L175 Difference]: Start difference. First operand has 136 places, 209 transitions, 2134 flow. Second operand 9 states and 201 transitions. [2024-06-27 20:36:26,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 266 transitions, 2942 flow [2024-06-27 20:36:27,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 266 transitions, 2699 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 20:36:27,487 INFO L231 Difference]: Finished difference. Result has 142 places, 217 transitions, 2143 flow [2024-06-27 20:36:27,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2143, PETRI_PLACES=142, PETRI_TRANSITIONS=217} [2024-06-27 20:36:27,488 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-27 20:36:27,488 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 217 transitions, 2143 flow [2024-06-27 20:36:27,488 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) [2024-06-27 20:36:27,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:27,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:27,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:36:27,489 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:27,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:27,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1206442261, now seen corresponding path program 3 times [2024-06-27 20:36:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:27,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854401241] [2024-06-27 20:36:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854401241] [2024-06-27 20:36:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854401241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:28,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:28,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059782736] [2024-06-27 20:36:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:28,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:28,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:36:28,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 217 transitions, 2143 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) [2024-06-27 20:36:28,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:28,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:36:28,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:31,137 INFO L124 PetriNetUnfolderBase]: 12906/17808 cut-off events. [2024-06-27 20:36:31,138 INFO L125 PetriNetUnfolderBase]: For 591680/591718 co-relation queries the response was YES. [2024-06-27 20:36:31,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120438 conditions, 17808 events. 12906/17808 cut-off events. For 591680/591718 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 95390 event pairs, 4705 based on Foata normal form. 59/17848 useless extension candidates. Maximal degree in co-relation 120381. Up to 16723 conditions per place. [2024-06-27 20:36:31,299 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 174 selfloop transitions, 96 changer transitions 0/275 dead transitions. [2024-06-27 20:36:31,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 275 transitions, 2968 flow [2024-06-27 20:36:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:36:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:36:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 20:36:31,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662309368191721 [2024-06-27 20:36:31,300 INFO L175 Difference]: Start difference. First operand has 142 places, 217 transitions, 2143 flow. Second operand 9 states and 214 transitions. [2024-06-27 20:36:31,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 275 transitions, 2968 flow [2024-06-27 20:36:31,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 275 transitions, 2805 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 20:36:31,803 INFO L231 Difference]: Finished difference. Result has 146 places, 220 transitions, 2285 flow [2024-06-27 20:36:31,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2285, PETRI_PLACES=146, PETRI_TRANSITIONS=220} [2024-06-27 20:36:31,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-27 20:36:31,804 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 220 transitions, 2285 flow [2024-06-27 20:36:31,804 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) [2024-06-27 20:36:31,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:31,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:31,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:36:31,804 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:31,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1198168051, now seen corresponding path program 4 times [2024-06-27 20:36:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:31,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802177966] [2024-06-27 20:36:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:33,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802177966] [2024-06-27 20:36:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802177966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:33,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:33,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980331393] [2024-06-27 20:36:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:33,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:33,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:36:33,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 220 transitions, 2285 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) [2024-06-27 20:36:33,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:33,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:36:33,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:36,080 INFO L124 PetriNetUnfolderBase]: 12942/17860 cut-off events. [2024-06-27 20:36:36,080 INFO L125 PetriNetUnfolderBase]: For 632971/633009 co-relation queries the response was YES. [2024-06-27 20:36:36,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124152 conditions, 17860 events. 12942/17860 cut-off events. For 632971/633009 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 95624 event pairs, 4713 based on Foata normal form. 29/17870 useless extension candidates. Maximal degree in co-relation 124094. Up to 16813 conditions per place. [2024-06-27 20:36:36,225 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 149 selfloop transitions, 119 changer transitions 0/273 dead transitions. [2024-06-27 20:36:36,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 273 transitions, 3086 flow [2024-06-27 20:36:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:36:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:36:36,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 20:36:36,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553376906318083 [2024-06-27 20:36:36,226 INFO L175 Difference]: Start difference. First operand has 146 places, 220 transitions, 2285 flow. Second operand 9 states and 209 transitions. [2024-06-27 20:36:36,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 273 transitions, 3086 flow [2024-06-27 20:36:36,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 273 transitions, 2827 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 20:36:36,761 INFO L231 Difference]: Finished difference. Result has 148 places, 223 transitions, 2380 flow [2024-06-27 20:36:36,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2380, PETRI_PLACES=148, PETRI_TRANSITIONS=223} [2024-06-27 20:36:36,761 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-27 20:36:36,761 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 223 transitions, 2380 flow [2024-06-27 20:36:36,762 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) [2024-06-27 20:36:36,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:36,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:36:36,762 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:36,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1197871381, now seen corresponding path program 5 times [2024-06-27 20:36:36,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816561731] [2024-06-27 20:36:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:37,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816561731] [2024-06-27 20:36:37,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816561731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:37,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:37,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:36:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723172423] [2024-06-27 20:36:37,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:37,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:36:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:36:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:36:37,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:36:37,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 223 transitions, 2380 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) [2024-06-27 20:36:37,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:37,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:36:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:40,492 INFO L124 PetriNetUnfolderBase]: 13160/18194 cut-off events. [2024-06-27 20:36:40,492 INFO L125 PetriNetUnfolderBase]: For 692439/692477 co-relation queries the response was YES. [2024-06-27 20:36:40,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129225 conditions, 18194 events. 13160/18194 cut-off events. For 692439/692477 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 97875 event pairs, 4273 based on Foata normal form. 29/18204 useless extension candidates. Maximal degree in co-relation 129166. Up to 16488 conditions per place. [2024-06-27 20:36:40,797 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 146 selfloop transitions, 135 changer transitions 0/286 dead transitions. [2024-06-27 20:36:40,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 286 transitions, 3483 flow [2024-06-27 20:36:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:36:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:36:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 20:36:40,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47276688453159044 [2024-06-27 20:36:40,798 INFO L175 Difference]: Start difference. First operand has 148 places, 223 transitions, 2380 flow. Second operand 9 states and 217 transitions. [2024-06-27 20:36:40,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 286 transitions, 3483 flow [2024-06-27 20:36:41,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 286 transitions, 3155 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 20:36:41,353 INFO L231 Difference]: Finished difference. Result has 150 places, 228 transitions, 2528 flow [2024-06-27 20:36:41,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2528, PETRI_PLACES=150, PETRI_TRANSITIONS=228} [2024-06-27 20:36:41,354 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-27 20:36:41,354 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 228 transitions, 2528 flow [2024-06-27 20:36:41,354 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) [2024-06-27 20:36:41,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:41,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:36:41,355 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:41,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash -925033828, now seen corresponding path program 2 times [2024-06-27 20:36:41,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774117870] [2024-06-27 20:36:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774117870] [2024-06-27 20:36:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774117870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:36:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030809654] [2024-06-27 20:36:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:41,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:36:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:36:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:36:41,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:36:41,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 228 transitions, 2528 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:41,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:41,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:36:41,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:44,647 INFO L124 PetriNetUnfolderBase]: 13146/18185 cut-off events. [2024-06-27 20:36:44,648 INFO L125 PetriNetUnfolderBase]: For 745649/745693 co-relation queries the response was YES. [2024-06-27 20:36:44,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131859 conditions, 18185 events. 13146/18185 cut-off events. For 745649/745693 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 98063 event pairs, 4712 based on Foata normal form. 36/18214 useless extension candidates. Maximal degree in co-relation 131799. Up to 17822 conditions per place. [2024-06-27 20:36:44,982 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 221 selfloop transitions, 25 changer transitions 0/251 dead transitions. [2024-06-27 20:36:44,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 251 transitions, 3098 flow [2024-06-27 20:36:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:36:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:36:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 20:36:44,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42810457516339867 [2024-06-27 20:36:44,983 INFO L175 Difference]: Start difference. First operand has 150 places, 228 transitions, 2528 flow. Second operand 6 states and 131 transitions. [2024-06-27 20:36:44,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 251 transitions, 3098 flow [2024-06-27 20:36:45,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 251 transitions, 2813 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-27 20:36:45,666 INFO L231 Difference]: Finished difference. Result has 151 places, 228 transitions, 2302 flow [2024-06-27 20:36:45,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2302, PETRI_PLACES=151, PETRI_TRANSITIONS=228} [2024-06-27 20:36:45,667 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-27 20:36:45,667 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 228 transitions, 2302 flow [2024-06-27 20:36:45,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:45,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:45,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:45,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:36:45,667 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:45,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash -930741796, now seen corresponding path program 1 times [2024-06-27 20:36:45,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:45,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611645435] [2024-06-27 20:36:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:46,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611645435] [2024-06-27 20:36:46,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611645435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:46,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:46,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:36:46,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773268270] [2024-06-27 20:36:46,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:46,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:36:46,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:46,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:36:46,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:36:46,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:36:46,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 228 transitions, 2302 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:46,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:46,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:36:46,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:48,645 INFO L124 PetriNetUnfolderBase]: 11509/16337 cut-off events. [2024-06-27 20:36:48,646 INFO L125 PetriNetUnfolderBase]: For 656670/656670 co-relation queries the response was YES. [2024-06-27 20:36:48,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117408 conditions, 16337 events. 11509/16337 cut-off events. For 656670/656670 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 91423 event pairs, 3963 based on Foata normal form. 4/16336 useless extension candidates. Maximal degree in co-relation 117346. Up to 15689 conditions per place. [2024-06-27 20:36:48,821 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 238 selfloop transitions, 21 changer transitions 0/265 dead transitions. [2024-06-27 20:36:48,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 265 transitions, 3178 flow [2024-06-27 20:36:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:36:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:36:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 20:36:48,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2024-06-27 20:36:48,822 INFO L175 Difference]: Start difference. First operand has 151 places, 228 transitions, 2302 flow. Second operand 6 states and 141 transitions. [2024-06-27 20:36:48,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 265 transitions, 3178 flow [2024-06-27 20:36:49,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 265 transitions, 3105 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:36:49,396 INFO L231 Difference]: Finished difference. Result has 153 places, 240 transitions, 2472 flow [2024-06-27 20:36:49,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2472, PETRI_PLACES=153, PETRI_TRANSITIONS=240} [2024-06-27 20:36:49,396 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 20:36:49,396 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 240 transitions, 2472 flow [2024-06-27 20:36:49,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:49,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:49,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:49,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:36:49,397 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:49,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:49,397 INFO L85 PathProgramCache]: Analyzing trace with hash -8954626, now seen corresponding path program 2 times [2024-06-27 20:36:49,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:49,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928073773] [2024-06-27 20:36:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:36:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:36:50,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:36:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928073773] [2024-06-27 20:36:50,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928073773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:36:50,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:36:50,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:36:50,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245955795] [2024-06-27 20:36:50,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:36:50,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:36:50,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:36:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:36:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:36:50,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:36:50,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 240 transitions, 2472 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:50,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:36:50,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:36:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:36:52,404 INFO L124 PetriNetUnfolderBase]: 11495/16330 cut-off events. [2024-06-27 20:36:52,404 INFO L125 PetriNetUnfolderBase]: For 693984/693984 co-relation queries the response was YES. [2024-06-27 20:36:52,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121142 conditions, 16330 events. 11495/16330 cut-off events. For 693984/693984 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 91487 event pairs, 3953 based on Foata normal form. 4/16331 useless extension candidates. Maximal degree in co-relation 121078. Up to 15710 conditions per place. [2024-06-27 20:36:52,558 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 239 selfloop transitions, 14 changer transitions 0/259 dead transitions. [2024-06-27 20:36:52,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 259 transitions, 3038 flow [2024-06-27 20:36:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:36:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:36:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 20:36:52,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434640522875817 [2024-06-27 20:36:52,559 INFO L175 Difference]: Start difference. First operand has 153 places, 240 transitions, 2472 flow. Second operand 6 states and 133 transitions. [2024-06-27 20:36:52,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 259 transitions, 3038 flow [2024-06-27 20:36:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 259 transitions, 2916 flow, removed 60 selfloop flow, removed 1 redundant places. [2024-06-27 20:36:53,393 INFO L231 Difference]: Finished difference. Result has 158 places, 240 transitions, 2387 flow [2024-06-27 20:36:53,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2387, PETRI_PLACES=158, PETRI_TRANSITIONS=240} [2024-06-27 20:36:53,394 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-27 20:36:53,394 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 240 transitions, 2387 flow [2024-06-27 20:36:53,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:36:53,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:36:53,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:36:53,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:36:53,394 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:36:53,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:36:53,395 INFO L85 PathProgramCache]: Analyzing trace with hash 790091973, now seen corresponding path program 1 times [2024-06-27 20:36:53,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:36:53,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067600654] [2024-06-27 20:36:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:36:53,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:36:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat