./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.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/mix041_power.oepc_pso.oepc_rmo.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/mix041_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix041_power.oepc_pso.oepc_rmo.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 20:29:41,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:29:41,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:29:41,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:29:41,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:29:41,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:29:41,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:29:41,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:29:41,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:29:41,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:29:41,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:29:41,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:29:41,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:29:41,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:29:41,737 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:29:41,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:29:41,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:29:41,738 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:29:41,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:29:41,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:29:41,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:29:41,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:29:41,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:29:41,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:29:41,743 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:29:41,743 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:29:41,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:29:41,744 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:29:41,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:29:41,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:29:41,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:29:41,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:29:41,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:29:41,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:29:41,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:29:41,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:29:41,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:29:41,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:29:41,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:29:41,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:29:41,749 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:29:41,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:29:41,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:29:41,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:29:41,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:29:42,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:29:42,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:29:42,007 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:29:42,008 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:29:42,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:29:43,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:29:43,238 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:29:43,239 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:29:43,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb736000/5e6787ffb3ce4c41a5a0d752a6f149fb/FLAG50fbb4c07 [2024-06-27 20:29:43,269 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb736000/5e6787ffb3ce4c41a5a0d752a6f149fb [2024-06-27 20:29:43,271 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:29:43,272 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:29:43,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix041_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 20:29:43,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:29:43,394 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:29:43,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:29:43,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:29:43,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:29:43,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:29:43" (1/2) ... [2024-06-27 20:29:43,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72db65d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:29:43, skipping insertion in model container [2024-06-27 20:29:43,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:29:43" (1/2) ... [2024-06-27 20:29:43,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f853dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:29:43, skipping insertion in model container [2024-06-27 20:29:43,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:29:43" (2/2) ... [2024-06-27 20:29:43,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72db65d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:29:43, skipping insertion in model container [2024-06-27 20:29:43,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:29:43" (2/2) ... [2024-06-27 20:29:43,402 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:29:43,449 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:29:43,450 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || z$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-27 20:29:43,450 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || z$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-27 20:29:43,450 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:29:43,451 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-27 20:29:43,485 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:29:43,779 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:29:43,786 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:29:43,852 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:29:43,877 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:29:43,878 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:29:43 WrapperNode [2024-06-27 20:29:43,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:29:43,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:29:43,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:29:43,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:29:43,884 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,894 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,911 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-27 20:29:43,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:29:43,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:29:43,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:29:43,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:29:43,924 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,924 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,933 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,953 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 20:29:43,955 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,955 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,966 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,971 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,973 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,979 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:29:43,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:29:43,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:29:43,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:29:43,983 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 08:29:43" (1/1) ... [2024-06-27 20:29:43,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:29:43,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:29:44,004 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 20:29:44,006 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 20:29:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:29:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:29:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:29:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:29:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:29:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:29:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:29:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:29:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:29:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:29:44,032 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 20:29:44,127 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:29:44,128 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:29:44,442 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:29:44,442 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:29:44,553 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:29:44,554 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:29:44,554 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:29:44 BoogieIcfgContainer [2024-06-27 20:29:44,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:29:44,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:29:44,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:29:44,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:29:44,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:29:43" (1/4) ... [2024-06-27 20:29:44,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e858f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:29:44, skipping insertion in model container [2024-06-27 20:29:44,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:29:43" (2/4) ... [2024-06-27 20:29:44,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e858f2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:29:44, skipping insertion in model container [2024-06-27 20:29:44,559 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 08:29:43" (3/4) ... [2024-06-27 20:29:44,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e858f2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:29:44, skipping insertion in model container [2024-06-27 20:29:44,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:29:44" (4/4) ... [2024-06-27 20:29:44,564 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:29:44,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:29:44,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:29:44,579 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:29:44,623 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:29:44,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:29:44,675 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 20:29:44,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:29:44,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:29:44,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:29:44,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 20:29:44,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:29:44,694 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;@646a53e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:29:44,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:29:44,697 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:29:44,697 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:29:44,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:29:44,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:44,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:29:44,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:44,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash 332828771, now seen corresponding path program 1 times [2024-06-27 20:29:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:44,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114105269] [2024-06-27 20:29:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:44,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:29:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114105269] [2024-06-27 20:29:45,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114105269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:45,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:45,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:29:45,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099767665] [2024-06-27 20:29:45,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:45,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:29:45,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:29:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:29:45,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 20:29:45,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 20:29:45,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:45,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 20:29:45,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:45,631 INFO L124 PetriNetUnfolderBase]: 189/351 cut-off events. [2024-06-27 20:29:45,631 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 20:29:45,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 351 events. 189/351 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1290 event pairs, 115 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 696. Up to 333 conditions per place. [2024-06-27 20:29:45,637 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 20:29:45,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-27 20:29:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:29:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:29:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-27 20:29:45,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-27 20:29:45,648 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-27 20:29:45,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-27 20:29:45,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:29:45,651 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 20:29:45,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 20:29:45,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 20:29:45,656 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 20:29:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 20:29:45,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:45,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:45,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:29:45,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2020889858, now seen corresponding path program 1 times [2024-06-27 20:29:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420449803] [2024-06-27 20:29:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:45,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:46,090 INFO 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 20:29:46,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:46,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420449803] [2024-06-27 20:29:46,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420449803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:46,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:46,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:29:46,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50281097] [2024-06-27 20:29:46,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:46,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:29:46,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:46,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:29:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:29:46,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 20:29:46,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:29:46,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:46,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 20:29:46,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:46,189 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-27 20:29:46,190 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-27 20:29:46,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 94 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-27 20:29:46,192 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 20:29:46,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-27 20:29:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:29:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:29:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-27 20:29:46,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-27 20:29:46,194 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-27 20:29:46,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-27 20:29:46,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:29:46,195 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 20:29:46,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 20:29:46,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 20:29:46,196 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 20:29:46,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:29:46,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:46,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:46,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:29:46,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:46,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1776923130, now seen corresponding path program 1 times [2024-06-27 20:29:46,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:46,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053260819] [2024-06-27 20:29:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:46,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:46,628 INFO 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 20:29:46,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:46,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053260819] [2024-06-27 20:29:46,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053260819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:46,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:46,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:29:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393858781] [2024-06-27 20:29:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:46,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:29:46,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:29:46,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:29:46,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 20:29:46,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:29:46,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:46,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 20:29:46,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:46,756 INFO L124 PetriNetUnfolderBase]: 187/354 cut-off events. [2024-06-27 20:29:46,757 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-27 20:29:46,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 354 events. 187/354 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1309 event pairs, 67 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 868. Up to 293 conditions per place. [2024-06-27 20:29:46,759 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-27 20:29:46,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 251 flow [2024-06-27 20:29:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:29:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:29:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-27 20:29:46,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-27 20:29:46,761 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 90 transitions. [2024-06-27 20:29:46,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 251 flow [2024-06-27 20:29:46,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:29:46,763 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-27 20:29:46,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-27 20:29:46,764 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 20:29:46,764 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-27 20:29:46,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:29:46,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:46,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:46,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:29:46,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:46,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1414893681, now seen corresponding path program 1 times [2024-06-27 20:29:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388731973] [2024-06-27 20:29:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:47,371 INFO 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 20:29:47,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:47,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388731973] [2024-06-27 20:29:47,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388731973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:47,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:47,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:29:47,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651715844] [2024-06-27 20:29:47,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:47,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:29:47,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:47,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:29:47,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:29:47,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 20:29:47,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 20:29:47,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:47,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 20:29:47,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:47,520 INFO L124 PetriNetUnfolderBase]: 188/356 cut-off events. [2024-06-27 20:29:47,520 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-27 20:29:47,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 356 events. 188/356 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1311 event pairs, 46 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 1042. Up to 282 conditions per place. [2024-06-27 20:29:47,523 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-27 20:29:47,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 336 flow [2024-06-27 20:29:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:29:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:29:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 20:29:47,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-27 20:29:47,524 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 106 transitions. [2024-06-27 20:29:47,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 336 flow [2024-06-27 20:29:47,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 332 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 20:29:47,527 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-27 20:29:47,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 20:29:47,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-27 20:29:47,528 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-27 20:29:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 20:29:47,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:47,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:29:47,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:47,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1773879685, now seen corresponding path program 1 times [2024-06-27 20:29:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130133229] [2024-06-27 20:29:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:47,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:48,242 INFO 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 20:29:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130133229] [2024-06-27 20:29:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130133229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:48,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:48,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:29:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618815299] [2024-06-27 20:29:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:48,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:29:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:29:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:29:48,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 20:29:48,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:48,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:48,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 20:29:48,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:48,512 INFO L124 PetriNetUnfolderBase]: 189/359 cut-off events. [2024-06-27 20:29:48,512 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-27 20:29:48,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 359 events. 189/359 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1327 event pairs, 24 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1172. Up to 259 conditions per place. [2024-06-27 20:29:48,514 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-27 20:29:48,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 382 flow [2024-06-27 20:29:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:29:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:29:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 20:29:48,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391705069124424 [2024-06-27 20:29:48,529 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 117 transitions. [2024-06-27 20:29:48,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 382 flow [2024-06-27 20:29:48,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 20:29:48,532 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-27 20:29:48,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-27 20:29:48,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 20:29:48,533 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-27 20:29:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:48,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:48,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:48,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:29:48,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:48,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1502486617, now seen corresponding path program 1 times [2024-06-27 20:29:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107600743] [2024-06-27 20:29:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:48,922 INFO 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 20:29:48,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107600743] [2024-06-27 20:29:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107600743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:48,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:48,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:29:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567432528] [2024-06-27 20:29:48,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:29:48,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:48,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:29:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:29:48,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:29:48,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:29:48,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:48,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:29:48,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:49,121 INFO L124 PetriNetUnfolderBase]: 187/355 cut-off events. [2024-06-27 20:29:49,122 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-27 20:29:49,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 355 events. 187/355 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1302 event pairs, 47 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1217. Up to 329 conditions per place. [2024-06-27 20:29:49,124 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-27 20:29:49,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 309 flow [2024-06-27 20:29:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:29:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:29:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-27 20:29:49,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 20:29:49,125 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 64 transitions. [2024-06-27 20:29:49,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 309 flow [2024-06-27 20:29:49,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 268 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 20:29:49,127 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-27 20:29:49,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-27 20:29:49,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 20:29:49,128 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-27 20:29:49,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:29:49,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:49,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:49,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:29:49,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:49,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:49,129 INFO L85 PathProgramCache]: Analyzing trace with hash -696182331, now seen corresponding path program 1 times [2024-06-27 20:29:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:49,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181169204] [2024-06-27 20:29:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:29:49,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:49,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181169204] [2024-06-27 20:29:49,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181169204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:49,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:49,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:29:49,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960905398] [2024-06-27 20:29:49,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:49,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:29:49,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:29:49,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:29:49,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:49,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:49,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:49,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:49,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:49,784 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-27 20:29:49,784 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-27 20:29:49,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 382 events. 212/382 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1353 event pairs, 55 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1300. Up to 368 conditions per place. [2024-06-27 20:29:49,786 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-27 20:29:49,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 303 flow [2024-06-27 20:29:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:29:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:29:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 20:29:49,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:29:49,787 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 69 transitions. [2024-06-27 20:29:49,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 303 flow [2024-06-27 20:29:49,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 288 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 20:29:49,790 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-27 20:29:49,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 20:29:49,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-27 20:29:49,791 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-27 20:29:49,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:49,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:49,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:49,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:29:49,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:49,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash -479738274, now seen corresponding path program 1 times [2024-06-27 20:29:49,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:49,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849382135] [2024-06-27 20:29:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:49,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:50,224 INFO 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 20:29:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849382135] [2024-06-27 20:29:50,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849382135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:50,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:50,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:29:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493779267] [2024-06-27 20:29:50,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:50,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:29:50,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:29:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:29:50,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:29:50,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:50,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:50,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:29:50,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:50,409 INFO L124 PetriNetUnfolderBase]: 197/368 cut-off events. [2024-06-27 20:29:50,409 INFO L125 PetriNetUnfolderBase]: For 1312/1312 co-relation queries the response was YES. [2024-06-27 20:29:50,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 368 events. 197/368 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1345 event pairs, 51 based on Foata normal form. 2/368 useless extension candidates. Maximal degree in co-relation 1323. Up to 306 conditions per place. [2024-06-27 20:29:50,412 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-27 20:29:50,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 358 flow [2024-06-27 20:29:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:29:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:29:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-27 20:29:50,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-27 20:29:50,413 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 6 states and 82 transitions. [2024-06-27 20:29:50,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 358 flow [2024-06-27 20:29:50,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:29:50,415 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 242 flow [2024-06-27 20:29:50,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-27 20:29:50,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-27 20:29:50,416 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 242 flow [2024-06-27 20:29:50,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:50,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:50,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:50,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:29:50,417 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:50,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash -450960354, now seen corresponding path program 2 times [2024-06-27 20:29:50,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:50,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096246473] [2024-06-27 20:29:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:50,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:50,815 INFO 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 20:29:50,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:50,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096246473] [2024-06-27 20:29:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096246473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:50,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:50,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:29:50,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801009431] [2024-06-27 20:29:50,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:50,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:29:50,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:29:50,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:29:50,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:29:50,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:50,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:50,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:29:50,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:51,039 INFO L124 PetriNetUnfolderBase]: 192/358 cut-off events. [2024-06-27 20:29:51,039 INFO L125 PetriNetUnfolderBase]: For 1557/1557 co-relation queries the response was YES. [2024-06-27 20:29:51,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 358 events. 192/358 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1298 event pairs, 50 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1344. Up to 327 conditions per place. [2024-06-27 20:29:51,041 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-27 20:29:51,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 344 flow [2024-06-27 20:29:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:29:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:29:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-27 20:29:51,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 20:29:51,043 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 242 flow. Second operand 6 states and 74 transitions. [2024-06-27 20:29:51,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 344 flow [2024-06-27 20:29:51,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 329 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:29:51,045 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 248 flow [2024-06-27 20:29:51,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-27 20:29:51,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-27 20:29:51,046 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 248 flow [2024-06-27 20:29:51,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:51,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:51,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:51,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:29:51,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:51,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash -106814762, now seen corresponding path program 1 times [2024-06-27 20:29:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:51,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809594031] [2024-06-27 20:29:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:51,492 INFO 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 20:29:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809594031] [2024-06-27 20:29:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809594031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:51,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:51,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:29:51,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479142899] [2024-06-27 20:29:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:51,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:29:51,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:29:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:29:51,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:51,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:51,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:51,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:51,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:51,802 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-27 20:29:51,803 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2024-06-27 20:29:51,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 365 events. 202/365 cut-off events. For 1803/1803 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1257 event pairs, 50 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 1384. Up to 342 conditions per place. [2024-06-27 20:29:51,805 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-27 20:29:51,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 380 flow [2024-06-27 20:29:51,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:29:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:29:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 20:29:51,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-27 20:29:51,806 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 248 flow. Second operand 7 states and 80 transitions. [2024-06-27 20:29:51,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 380 flow [2024-06-27 20:29:51,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 346 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:29:51,808 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 253 flow [2024-06-27 20:29:51,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 20:29:51,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-27 20:29:51,809 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 253 flow [2024-06-27 20:29:51,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:51,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:51,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:51,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:29:51,810 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:51,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:51,810 INFO L85 PathProgramCache]: Analyzing trace with hash 806333126, now seen corresponding path program 1 times [2024-06-27 20:29:51,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:51,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200516882] [2024-06-27 20:29:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:51,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:52,326 INFO 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 20:29:52,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:52,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200516882] [2024-06-27 20:29:52,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200516882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:52,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:52,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:29:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286108263] [2024-06-27 20:29:52,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:29:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:29:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:29:52,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:52,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:52,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:52,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:52,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:52,538 INFO L124 PetriNetUnfolderBase]: 208/375 cut-off events. [2024-06-27 20:29:52,539 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2024-06-27 20:29:52,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 375 events. 208/375 cut-off events. For 2062/2062 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1301 event pairs, 50 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 1466. Up to 308 conditions per place. [2024-06-27 20:29:52,541 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-27 20:29:52,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 445 flow [2024-06-27 20:29:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:29:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:29:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 20:29:52,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-27 20:29:52,543 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 253 flow. Second operand 7 states and 89 transitions. [2024-06-27 20:29:52,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 445 flow [2024-06-27 20:29:52,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 422 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:29:52,546 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 298 flow [2024-06-27 20:29:52,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-27 20:29:52,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-27 20:29:52,548 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 298 flow [2024-06-27 20:29:52,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:52,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:52,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:52,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:29:52,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:52,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:52,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1569615836, now seen corresponding path program 2 times [2024-06-27 20:29:52,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:52,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722978862] [2024-06-27 20:29:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:52,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:53,040 INFO 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 20:29:53,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:53,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722978862] [2024-06-27 20:29:53,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722978862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:53,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:53,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:29:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800378815] [2024-06-27 20:29:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:53,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:29:53,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:29:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:29:53,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:53,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:53,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:53,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:53,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:53,246 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-27 20:29:53,246 INFO L125 PetriNetUnfolderBase]: For 2401/2401 co-relation queries the response was YES. [2024-06-27 20:29:53,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 380 events. 211/380 cut-off events. For 2401/2401 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1314 event pairs, 48 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1579. Up to 356 conditions per place. [2024-06-27 20:29:53,248 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-27 20:29:53,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 484 flow [2024-06-27 20:29:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:29:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:29:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 20:29:53,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-27 20:29:53,250 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 298 flow. Second operand 7 states and 81 transitions. [2024-06-27 20:29:53,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 484 flow [2024-06-27 20:29:53,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 464 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 20:29:53,276 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 341 flow [2024-06-27 20:29:53,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-27 20:29:53,278 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-27 20:29:53,278 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 341 flow [2024-06-27 20:29:53,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:53,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:53,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:53,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:29:53,278 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:53,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 983701796, now seen corresponding path program 3 times [2024-06-27 20:29:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:53,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007453388] [2024-06-27 20:29:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:53,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:53,719 INFO 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 20:29:53,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:53,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007453388] [2024-06-27 20:29:53,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007453388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:53,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:53,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:29:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784880749] [2024-06-27 20:29:53,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:53,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:29:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:29:53,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:29:53,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:53,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 341 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:53,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:53,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:53,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:53,961 INFO L124 PetriNetUnfolderBase]: 209/377 cut-off events. [2024-06-27 20:29:53,961 INFO L125 PetriNetUnfolderBase]: For 2832/2832 co-relation queries the response was YES. [2024-06-27 20:29:53,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 377 events. 209/377 cut-off events. For 2832/2832 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1299 event pairs, 48 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1624. Up to 360 conditions per place. [2024-06-27 20:29:53,963 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-27 20:29:53,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 473 flow [2024-06-27 20:29:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:29:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:29:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 20:29:53,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-27 20:29:53,965 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 341 flow. Second operand 7 states and 78 transitions. [2024-06-27 20:29:53,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 473 flow [2024-06-27 20:29:53,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 450 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 20:29:53,968 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 343 flow [2024-06-27 20:29:53,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-27 20:29:53,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-27 20:29:53,969 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 343 flow [2024-06-27 20:29:53,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:53,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:53,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:53,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:29:53,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:53,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:53,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1470764227, now seen corresponding path program 1 times [2024-06-27 20:29:53,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:53,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947858194] [2024-06-27 20:29:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:53,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:54,660 INFO 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 20:29:54,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947858194] [2024-06-27 20:29:54,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947858194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:54,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:29:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855915010] [2024-06-27 20:29:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:54,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:29:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:54,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:29:54,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:29:54,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:29:54,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 20:29:54,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:54,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:29:54,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:54,967 INFO L124 PetriNetUnfolderBase]: 197/364 cut-off events. [2024-06-27 20:29:54,967 INFO L125 PetriNetUnfolderBase]: For 3257/3257 co-relation queries the response was YES. [2024-06-27 20:29:54,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 364 events. 197/364 cut-off events. For 3257/3257 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1277 event pairs, 46 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1598. Up to 282 conditions per place. [2024-06-27 20:29:54,969 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 18 changer transitions 0/69 dead transitions. [2024-06-27 20:29:54,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 511 flow [2024-06-27 20:29:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:29:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:29:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 20:29:54,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-27 20:29:54,970 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 343 flow. Second operand 8 states and 105 transitions. [2024-06-27 20:29:54,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 511 flow [2024-06-27 20:29:54,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 486 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:29:54,973 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 376 flow [2024-06-27 20:29:54,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-06-27 20:29:54,974 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-27 20:29:54,974 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 376 flow [2024-06-27 20:29:54,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 20:29:54,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:54,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:29:54,975 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:54,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash -773481648, now seen corresponding path program 1 times [2024-06-27 20:29:54,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:54,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088069688] [2024-06-27 20:29:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:55,531 INFO 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 20:29:55,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:55,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088069688] [2024-06-27 20:29:55,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088069688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:55,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:55,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:29:55,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872093642] [2024-06-27 20:29:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:55,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:29:55,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:29:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:29:55,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:55,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:55,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:55,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:55,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:55,743 INFO L124 PetriNetUnfolderBase]: 210/379 cut-off events. [2024-06-27 20:29:55,743 INFO L125 PetriNetUnfolderBase]: For 3655/3655 co-relation queries the response was YES. [2024-06-27 20:29:55,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 379 events. 210/379 cut-off events. For 3655/3655 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1312 event pairs, 49 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1747. Up to 310 conditions per place. [2024-06-27 20:29:55,746 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 24 changer transitions 0/71 dead transitions. [2024-06-27 20:29:55,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 590 flow [2024-06-27 20:29:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:29:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:29:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 20:29:55,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-27 20:29:55,747 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 376 flow. Second operand 7 states and 92 transitions. [2024-06-27 20:29:55,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 590 flow [2024-06-27 20:29:55,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 550 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:29:55,751 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 403 flow [2024-06-27 20:29:55,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-06-27 20:29:55,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-27 20:29:55,752 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 403 flow [2024-06-27 20:29:55,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:55,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:55,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:55,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:29:55,752 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:55,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:55,753 INFO L85 PathProgramCache]: Analyzing trace with hash 968034464, now seen corresponding path program 2 times [2024-06-27 20:29:55,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:55,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608349460] [2024-06-27 20:29:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:55,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:56,242 INFO 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 20:29:56,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:56,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608349460] [2024-06-27 20:29:56,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608349460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:56,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:56,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:29:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666301854] [2024-06-27 20:29:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:56,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:29:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:56,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:29:56,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:29:56,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:56,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:56,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:56,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:56,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:56,403 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-27 20:29:56,403 INFO L125 PetriNetUnfolderBase]: For 4182/4182 co-relation queries the response was YES. [2024-06-27 20:29:56,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 384 events. 213/384 cut-off events. For 4182/4182 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1346 event pairs, 49 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 1816. Up to 314 conditions per place. [2024-06-27 20:29:56,417 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 23 changer transitions 0/70 dead transitions. [2024-06-27 20:29:56,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 613 flow [2024-06-27 20:29:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:29:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:29:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 20:29:56,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 20:29:56,426 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 403 flow. Second operand 7 states and 88 transitions. [2024-06-27 20:29:56,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 613 flow [2024-06-27 20:29:56,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 551 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 20:29:56,431 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 411 flow [2024-06-27 20:29:56,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-27 20:29:56,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-27 20:29:56,434 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 411 flow [2024-06-27 20:29:56,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:56,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:56,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:56,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:29:56,436 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:56,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:56,436 INFO L85 PathProgramCache]: Analyzing trace with hash -773475851, now seen corresponding path program 1 times [2024-06-27 20:29:56,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:56,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531621766] [2024-06-27 20:29:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:56,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:57,050 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 20:29:57,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531621766] [2024-06-27 20:29:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531621766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:29:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243724258] [2024-06-27 20:29:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:29:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:29:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:29:57,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:57,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:57,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:57,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:57,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:57,277 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-06-27 20:29:57,277 INFO L125 PetriNetUnfolderBase]: For 5820/5820 co-relation queries the response was YES. [2024-06-27 20:29:57,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 446 events. 251/446 cut-off events. For 5820/5820 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1657 event pairs, 54 based on Foata normal form. 6/450 useless extension candidates. Maximal degree in co-relation 2109. Up to 303 conditions per place. [2024-06-27 20:29:57,280 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2024-06-27 20:29:57,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 687 flow [2024-06-27 20:29:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:29:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:29:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 20:29:57,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-27 20:29:57,281 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 411 flow. Second operand 8 states and 105 transitions. [2024-06-27 20:29:57,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 687 flow [2024-06-27 20:29:57,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 652 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:29:57,286 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 482 flow [2024-06-27 20:29:57,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-27 20:29:57,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-27 20:29:57,286 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 482 flow [2024-06-27 20:29:57,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:57,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:57,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:57,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:29:57,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:57,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash 418828349, now seen corresponding path program 2 times [2024-06-27 20:29:57,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:57,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006102781] [2024-06-27 20:29:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:57,830 INFO 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 20:29:57,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006102781] [2024-06-27 20:29:57,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006102781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:57,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:57,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:29:57,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028821828] [2024-06-27 20:29:57,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:57,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:29:57,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:29:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:29:57,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:57,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 482 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:57,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:57,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:57,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:58,070 INFO L124 PetriNetUnfolderBase]: 260/461 cut-off events. [2024-06-27 20:29:58,070 INFO L125 PetriNetUnfolderBase]: For 6414/6414 co-relation queries the response was YES. [2024-06-27 20:29:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 461 events. 260/461 cut-off events. For 6414/6414 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1700 event pairs, 53 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2343. Up to 410 conditions per place. [2024-06-27 20:29:58,073 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-06-27 20:29:58,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 746 flow [2024-06-27 20:29:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:29:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:29:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 20:29:58,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:29:58,074 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 482 flow. Second operand 8 states and 96 transitions. [2024-06-27 20:29:58,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 746 flow [2024-06-27 20:29:58,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 721 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 20:29:58,080 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 536 flow [2024-06-27 20:29:58,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=536, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-27 20:29:58,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-27 20:29:58,080 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 536 flow [2024-06-27 20:29:58,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:58,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:58,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:58,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:29:58,081 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:58,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1322856655, now seen corresponding path program 3 times [2024-06-27 20:29:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297927324] [2024-06-27 20:29:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:29:58,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297927324] [2024-06-27 20:29:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297927324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:58,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:58,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:29:58,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867267417] [2024-06-27 20:29:58,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:58,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:29:58,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:29:58,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:29:58,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:58,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 536 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:58,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:58,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:58,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:58,844 INFO L124 PetriNetUnfolderBase]: 269/476 cut-off events. [2024-06-27 20:29:58,844 INFO L125 PetriNetUnfolderBase]: For 7341/7341 co-relation queries the response was YES. [2024-06-27 20:29:58,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 476 events. 269/476 cut-off events. For 7341/7341 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1768 event pairs, 53 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2474. Up to 433 conditions per place. [2024-06-27 20:29:58,847 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 15 changer transitions 0/85 dead transitions. [2024-06-27 20:29:58,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 792 flow [2024-06-27 20:29:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:29:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:29:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 20:29:58,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 20:29:58,849 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 536 flow. Second operand 8 states and 94 transitions. [2024-06-27 20:29:58,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 792 flow [2024-06-27 20:29:58,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 764 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 20:29:58,855 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 565 flow [2024-06-27 20:29:58,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=565, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-06-27 20:29:58,856 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-27 20:29:58,856 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 565 flow [2024-06-27 20:29:58,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:58,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:58,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:58,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:29:58,857 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:58,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:58,857 INFO L85 PathProgramCache]: Analyzing trace with hash 430252533, now seen corresponding path program 4 times [2024-06-27 20:29:58,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:58,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431431918] [2024-06-27 20:29:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:58,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:29:59,280 INFO 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 20:29:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:29:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431431918] [2024-06-27 20:29:59,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431431918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:29:59,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:29:59,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:29:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851146157] [2024-06-27 20:29:59,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:29:59,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:29:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:29:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:29:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:29:59,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:29:59,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 565 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:59,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:29:59,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:29:59,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:29:59,579 INFO L124 PetriNetUnfolderBase]: 263/467 cut-off events. [2024-06-27 20:29:59,580 INFO L125 PetriNetUnfolderBase]: For 7354/7354 co-relation queries the response was YES. [2024-06-27 20:29:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 467 events. 263/467 cut-off events. For 7354/7354 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1730 event pairs, 51 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2413. Up to 441 conditions per place. [2024-06-27 20:29:59,584 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2024-06-27 20:29:59,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 749 flow [2024-06-27 20:29:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:29:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:29:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 20:29:59,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-27 20:29:59,585 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 565 flow. Second operand 8 states and 89 transitions. [2024-06-27 20:29:59,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 749 flow [2024-06-27 20:29:59,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 695 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 20:29:59,596 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 540 flow [2024-06-27 20:29:59,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=540, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-06-27 20:29:59,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-27 20:29:59,597 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 540 flow [2024-06-27 20:29:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:29:59,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:29:59,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:29:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:29:59,597 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:29:59,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:29:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1174687904, now seen corresponding path program 3 times [2024-06-27 20:29:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:29:59,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625746463] [2024-06-27 20:29:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:29:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:29:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:00,000 INFO 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 20:30:00,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625746463] [2024-06-27 20:30:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625746463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:00,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:00,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353355472] [2024-06-27 20:30:00,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:00,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:00,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:00,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:00,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:00,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:00,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:00,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:00,206 INFO L124 PetriNetUnfolderBase]: 261/464 cut-off events. [2024-06-27 20:30:00,220 INFO L125 PetriNetUnfolderBase]: For 7171/7171 co-relation queries the response was YES. [2024-06-27 20:30:00,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 464 events. 261/464 cut-off events. For 7171/7171 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1720 event pairs, 52 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2356. Up to 444 conditions per place. [2024-06-27 20:30:00,223 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 66 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-06-27 20:30:00,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 79 transitions, 710 flow [2024-06-27 20:30:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-27 20:30:00,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-27 20:30:00,224 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 540 flow. Second operand 7 states and 79 transitions. [2024-06-27 20:30:00,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 79 transitions, 710 flow [2024-06-27 20:30:00,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 670 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:00,231 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 527 flow [2024-06-27 20:30:00,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-27 20:30:00,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-27 20:30:00,232 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 527 flow [2024-06-27 20:30:00,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:00,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:00,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:00,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:30:00,233 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:00,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1673720617, now seen corresponding path program 1 times [2024-06-27 20:30:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680987096] [2024-06-27 20:30:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:00,958 INFO 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 20:30:00,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:00,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680987096] [2024-06-27 20:30:00,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680987096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:00,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:00,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:00,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518760754] [2024-06-27 20:30:00,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:00,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:00,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:00,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:01,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:30:01,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 527 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 20:30:01,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:01,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:30:01,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:01,191 INFO L124 PetriNetUnfolderBase]: 252/459 cut-off events. [2024-06-27 20:30:01,191 INFO L125 PetriNetUnfolderBase]: For 8199/8199 co-relation queries the response was YES. [2024-06-27 20:30:01,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 459 events. 252/459 cut-off events. For 8199/8199 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1751 event pairs, 30 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 2337. Up to 333 conditions per place. [2024-06-27 20:30:01,194 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 62 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-27 20:30:01,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 779 flow [2024-06-27 20:30:01,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 20:30:01,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 20:30:01,195 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 527 flow. Second operand 8 states and 104 transitions. [2024-06-27 20:30:01,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 779 flow [2024-06-27 20:30:01,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 734 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:01,202 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 532 flow [2024-06-27 20:30:01,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-27 20:30:01,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-27 20:30:01,203 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 532 flow [2024-06-27 20:30:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 20:30:01,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:01,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:30:01,204 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:01,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781191, now seen corresponding path program 1 times [2024-06-27 20:30:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:01,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52260875] [2024-06-27 20:30:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:01,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:01,731 INFO 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 20:30:01,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:01,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52260875] [2024-06-27 20:30:01,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52260875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:01,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:01,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10392161] [2024-06-27 20:30:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:01,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:01,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:01,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:01,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:01,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:01,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:01,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:01,938 INFO L124 PetriNetUnfolderBase]: 271/482 cut-off events. [2024-06-27 20:30:01,938 INFO L125 PetriNetUnfolderBase]: For 8587/8587 co-relation queries the response was YES. [2024-06-27 20:30:01,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 482 events. 271/482 cut-off events. For 8587/8587 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1829 event pairs, 50 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 2477. Up to 378 conditions per place. [2024-06-27 20:30:01,941 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 27 changer transitions 0/94 dead transitions. [2024-06-27 20:30:01,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 94 transitions, 832 flow [2024-06-27 20:30:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 20:30:01,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-27 20:30:01,943 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 532 flow. Second operand 8 states and 101 transitions. [2024-06-27 20:30:01,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 94 transitions, 832 flow [2024-06-27 20:30:01,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 790 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:01,954 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 594 flow [2024-06-27 20:30:01,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-06-27 20:30:01,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-27 20:30:01,955 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 594 flow [2024-06-27 20:30:01,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:01,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:01,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:01,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:30:01,955 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:01,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:01,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781067, now seen corresponding path program 2 times [2024-06-27 20:30:01,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:01,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801138025] [2024-06-27 20:30:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:01,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801138025] [2024-06-27 20:30:02,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801138025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:02,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:02,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:02,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761623067] [2024-06-27 20:30:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:02,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:02,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:02,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:30:02,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 20:30:02,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:02,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:30:02,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:02,962 INFO L124 PetriNetUnfolderBase]: 256/465 cut-off events. [2024-06-27 20:30:02,962 INFO L125 PetriNetUnfolderBase]: For 9355/9355 co-relation queries the response was YES. [2024-06-27 20:30:02,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 465 events. 256/465 cut-off events. For 9355/9355 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1798 event pairs, 45 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2427. Up to 369 conditions per place. [2024-06-27 20:30:02,966 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 62 selfloop transitions, 21 changer transitions 0/95 dead transitions. [2024-06-27 20:30:02,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 798 flow [2024-06-27 20:30:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 20:30:02,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 20:30:02,968 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 594 flow. Second operand 9 states and 115 transitions. [2024-06-27 20:30:02,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 798 flow [2024-06-27 20:30:02,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 751 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:02,978 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 594 flow [2024-06-27 20:30:02,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-27 20:30:02,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-27 20:30:02,979 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 594 flow [2024-06-27 20:30:02,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 20:30:02,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:02,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:02,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:30:02,980 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:02,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1676582351, now seen corresponding path program 2 times [2024-06-27 20:30:02,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:02,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281554787] [2024-06-27 20:30:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:02,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:03,693 INFO 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 20:30:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281554787] [2024-06-27 20:30:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281554787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:03,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:03,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:03,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583291537] [2024-06-27 20:30:03,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:03,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:03,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:03,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:03,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:03,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:03,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:03,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:03,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:03,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:03,885 INFO L124 PetriNetUnfolderBase]: 271/482 cut-off events. [2024-06-27 20:30:03,885 INFO L125 PetriNetUnfolderBase]: For 9632/9632 co-relation queries the response was YES. [2024-06-27 20:30:03,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 482 events. 271/482 cut-off events. For 9632/9632 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1836 event pairs, 49 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 2520. Up to 410 conditions per place. [2024-06-27 20:30:03,888 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-06-27 20:30:03,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 92 transitions, 814 flow [2024-06-27 20:30:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 20:30:03,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 20:30:03,889 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 594 flow. Second operand 8 states and 97 transitions. [2024-06-27 20:30:03,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 92 transitions, 814 flow [2024-06-27 20:30:03,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 767 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:03,897 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 620 flow [2024-06-27 20:30:03,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=620, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-27 20:30:03,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-27 20:30:03,898 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 620 flow [2024-06-27 20:30:03,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:03,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:03,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:03,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:30:03,899 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:03,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1653746717, now seen corresponding path program 3 times [2024-06-27 20:30:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730009808] [2024-06-27 20:30:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:04,581 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 20:30:04,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:04,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730009808] [2024-06-27 20:30:04,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730009808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:04,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:04,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379122495] [2024-06-27 20:30:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:04,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:04,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:04,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:04,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 620 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:04,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:04,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:04,866 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-27 20:30:04,866 INFO L125 PetriNetUnfolderBase]: For 10433/10433 co-relation queries the response was YES. [2024-06-27 20:30:04,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 487 events. 274/487 cut-off events. For 10433/10433 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1841 event pairs, 49 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 2577. Up to 409 conditions per place. [2024-06-27 20:30:04,870 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 29 changer transitions 0/95 dead transitions. [2024-06-27 20:30:04,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 852 flow [2024-06-27 20:30:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 20:30:04,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 20:30:04,871 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 620 flow. Second operand 9 states and 106 transitions. [2024-06-27 20:30:04,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 852 flow [2024-06-27 20:30:04,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 799 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:04,883 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 655 flow [2024-06-27 20:30:04,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=655, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-06-27 20:30:04,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-27 20:30:04,884 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 655 flow [2024-06-27 20:30:04,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:04,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:04,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:04,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:30:04,885 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:04,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1769037887, now seen corresponding path program 4 times [2024-06-27 20:30:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736695763] [2024-06-27 20:30:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:05,530 INFO 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 20:30:05,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736695763] [2024-06-27 20:30:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736695763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136698879] [2024-06-27 20:30:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:05,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:05,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:05,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:05,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:05,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:05,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:05,917 INFO L124 PetriNetUnfolderBase]: 277/492 cut-off events. [2024-06-27 20:30:05,918 INFO L125 PetriNetUnfolderBase]: For 11222/11222 co-relation queries the response was YES. [2024-06-27 20:30:05,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 492 events. 277/492 cut-off events. For 11222/11222 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1871 event pairs, 53 based on Foata normal form. 1/491 useless extension candidates. Maximal degree in co-relation 2654. Up to 400 conditions per place. [2024-06-27 20:30:05,927 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2024-06-27 20:30:05,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 979 flow [2024-06-27 20:30:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 20:30:05,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 20:30:05,929 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 655 flow. Second operand 9 states and 115 transitions. [2024-06-27 20:30:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 979 flow [2024-06-27 20:30:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 901 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:05,940 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 673 flow [2024-06-27 20:30:05,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=673, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-06-27 20:30:05,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-27 20:30:05,941 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 673 flow [2024-06-27 20:30:05,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:05,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:05,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:05,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:30:05,942 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:05,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1769222213, now seen corresponding path program 1 times [2024-06-27 20:30:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865676364] [2024-06-27 20:30:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:05,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:06,497 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 20:30:06,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:06,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865676364] [2024-06-27 20:30:06,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865676364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:06,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:06,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337795411] [2024-06-27 20:30:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:06,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:06,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:06,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 673 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:06,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:06,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:06,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:06,731 INFO L124 PetriNetUnfolderBase]: 301/531 cut-off events. [2024-06-27 20:30:06,731 INFO L125 PetriNetUnfolderBase]: For 12940/12940 co-relation queries the response was YES. [2024-06-27 20:30:06,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2908 conditions, 531 events. 301/531 cut-off events. For 12940/12940 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2066 event pairs, 56 based on Foata normal form. 3/532 useless extension candidates. Maximal degree in co-relation 2860. Up to 353 conditions per place. [2024-06-27 20:30:06,735 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 33 changer transitions 0/108 dead transitions. [2024-06-27 20:30:06,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 1065 flow [2024-06-27 20:30:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 20:30:06,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-06-27 20:30:06,738 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 673 flow. Second operand 8 states and 107 transitions. [2024-06-27 20:30:06,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 1065 flow [2024-06-27 20:30:06,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 108 transitions, 984 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:06,751 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 692 flow [2024-06-27 20:30:06,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=692, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-27 20:30:06,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-27 20:30:06,756 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 692 flow [2024-06-27 20:30:06,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:06,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:06,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:06,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:30:06,757 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:06,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1769215517, now seen corresponding path program 5 times [2024-06-27 20:30:06,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:06,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990563596] [2024-06-27 20:30:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:07,314 INFO 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 20:30:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:07,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990563596] [2024-06-27 20:30:07,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990563596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:07,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246910171] [2024-06-27 20:30:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:07,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:07,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:07,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:07,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 692 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:07,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:07,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:07,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:07,555 INFO L124 PetriNetUnfolderBase]: 304/536 cut-off events. [2024-06-27 20:30:07,555 INFO L125 PetriNetUnfolderBase]: For 13329/13329 co-relation queries the response was YES. [2024-06-27 20:30:07,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 536 events. 304/536 cut-off events. For 13329/13329 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2092 event pairs, 59 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 2940. Up to 464 conditions per place. [2024-06-27 20:30:07,559 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 75 selfloop transitions, 25 changer transitions 0/102 dead transitions. [2024-06-27 20:30:07,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 936 flow [2024-06-27 20:30:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 20:30:07,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:30:07,561 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 692 flow. Second operand 8 states and 96 transitions. [2024-06-27 20:30:07,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 936 flow [2024-06-27 20:30:07,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 891 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:07,575 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 724 flow [2024-06-27 20:30:07,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2024-06-27 20:30:07,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-27 20:30:07,577 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 724 flow [2024-06-27 20:30:07,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:07,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:07,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:07,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:30:07,578 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:07,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1769215703, now seen corresponding path program 2 times [2024-06-27 20:30:07,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:07,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545803102] [2024-06-27 20:30:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:07,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:08,079 INFO 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 20:30:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545803102] [2024-06-27 20:30:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545803102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:08,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:08,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833032836] [2024-06-27 20:30:08,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:08,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:08,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:08,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:08,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:08,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:08,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:08,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:08,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:08,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:08,326 INFO L124 PetriNetUnfolderBase]: 313/551 cut-off events. [2024-06-27 20:30:08,327 INFO L125 PetriNetUnfolderBase]: For 15153/15153 co-relation queries the response was YES. [2024-06-27 20:30:08,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 551 events. 313/551 cut-off events. For 15153/15153 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2169 event pairs, 56 based on Foata normal form. 3/552 useless extension candidates. Maximal degree in co-relation 2992. Up to 366 conditions per place. [2024-06-27 20:30:08,330 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-06-27 20:30:08,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 114 transitions, 1128 flow [2024-06-27 20:30:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 20:30:08,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-27 20:30:08,331 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 724 flow. Second operand 8 states and 110 transitions. [2024-06-27 20:30:08,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 114 transitions, 1128 flow [2024-06-27 20:30:08,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 114 transitions, 1071 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:08,347 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 754 flow [2024-06-27 20:30:08,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2024-06-27 20:30:08,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-27 20:30:08,348 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 754 flow [2024-06-27 20:30:08,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:08,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:08,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:08,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:30:08,349 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:08,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1791873707, now seen corresponding path program 3 times [2024-06-27 20:30:08,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415274587] [2024-06-27 20:30:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:08,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415274587] [2024-06-27 20:30:08,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415274587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:08,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:08,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495230791] [2024-06-27 20:30:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:08,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:08,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 754 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:08,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:08,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:08,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:09,207 INFO L124 PetriNetUnfolderBase]: 307/542 cut-off events. [2024-06-27 20:30:09,207 INFO L125 PetriNetUnfolderBase]: For 15104/15104 co-relation queries the response was YES. [2024-06-27 20:30:09,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 542 events. 307/542 cut-off events. For 15104/15104 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2126 event pairs, 50 based on Foata normal form. 3/543 useless extension candidates. Maximal degree in co-relation 2964. Up to 362 conditions per place. [2024-06-27 20:30:09,210 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 39 changer transitions 0/114 dead transitions. [2024-06-27 20:30:09,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 114 transitions, 1090 flow [2024-06-27 20:30:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 20:30:09,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-27 20:30:09,212 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 754 flow. Second operand 8 states and 110 transitions. [2024-06-27 20:30:09,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 114 transitions, 1090 flow [2024-06-27 20:30:09,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 114 transitions, 1033 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:09,226 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 780 flow [2024-06-27 20:30:09,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=780, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-27 20:30:09,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-27 20:30:09,227 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 780 flow [2024-06-27 20:30:09,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:09,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:09,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:09,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:30:09,228 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:09,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash 105027147, now seen corresponding path program 6 times [2024-06-27 20:30:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125729002] [2024-06-27 20:30:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:09,947 INFO 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 20:30:09,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:09,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125729002] [2024-06-27 20:30:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125729002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740606622] [2024-06-27 20:30:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:09,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:10,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:10,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 780 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:10,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:10,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:10,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:10,209 INFO L124 PetriNetUnfolderBase]: 305/539 cut-off events. [2024-06-27 20:30:10,209 INFO L125 PetriNetUnfolderBase]: For 14779/14779 co-relation queries the response was YES. [2024-06-27 20:30:10,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3033 conditions, 539 events. 305/539 cut-off events. For 14779/14779 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2111 event pairs, 56 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 2981. Up to 516 conditions per place. [2024-06-27 20:30:10,213 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 86 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-27 20:30:10,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 996 flow [2024-06-27 20:30:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 20:30:10,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:30:10,214 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 780 flow. Second operand 8 states and 88 transitions. [2024-06-27 20:30:10,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 996 flow [2024-06-27 20:30:10,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 879 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:10,232 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 694 flow [2024-06-27 20:30:10,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=694, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-27 20:30:10,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-27 20:30:10,232 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 694 flow [2024-06-27 20:30:10,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:10,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:10,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:10,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:30:10,233 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:10,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -630792831, now seen corresponding path program 1 times [2024-06-27 20:30:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710534681] [2024-06-27 20:30:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:10,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:10,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710534681] [2024-06-27 20:30:10,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710534681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:10,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:10,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:10,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619968199] [2024-06-27 20:30:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:10,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:10,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:10,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:10,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 694 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:10,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:10,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:10,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:11,109 INFO L124 PetriNetUnfolderBase]: 301/533 cut-off events. [2024-06-27 20:30:11,110 INFO L125 PetriNetUnfolderBase]: For 14823/14823 co-relation queries the response was YES. [2024-06-27 20:30:11,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 533 events. 301/533 cut-off events. For 14823/14823 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2072 event pairs, 43 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 2816. Up to 502 conditions per place. [2024-06-27 20:30:11,113 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2024-06-27 20:30:11,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 106 transitions, 944 flow [2024-06-27 20:30:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:30:11,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:30:11,114 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 694 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:30:11,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 106 transitions, 944 flow [2024-06-27 20:30:11,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 905 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:11,131 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 710 flow [2024-06-27 20:30:11,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=710, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-06-27 20:30:11,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-27 20:30:11,132 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 710 flow [2024-06-27 20:30:11,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:11,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:11,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:11,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:30:11,133 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:11,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:11,133 INFO L85 PathProgramCache]: Analyzing trace with hash 444646717, now seen corresponding path program 4 times [2024-06-27 20:30:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:11,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459109574] [2024-06-27 20:30:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:11,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459109574] [2024-06-27 20:30:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459109574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:11,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134357824] [2024-06-27 20:30:11,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:11,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:11,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:11,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:11,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:11,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:11,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 710 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:11,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:11,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:11,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:11,891 INFO L124 PetriNetUnfolderBase]: 310/548 cut-off events. [2024-06-27 20:30:11,892 INFO L125 PetriNetUnfolderBase]: For 16209/16209 co-relation queries the response was YES. [2024-06-27 20:30:11,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 548 events. 310/548 cut-off events. For 16209/16209 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2173 event pairs, 47 based on Foata normal form. 3/549 useless extension candidates. Maximal degree in co-relation 2907. Up to 474 conditions per place. [2024-06-27 20:30:11,895 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2024-06-27 20:30:11,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 1046 flow [2024-06-27 20:30:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 20:30:11,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 20:30:11,898 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 710 flow. Second operand 8 states and 98 transitions. [2024-06-27 20:30:11,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 1046 flow [2024-06-27 20:30:11,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 1004 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:11,919 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 725 flow [2024-06-27 20:30:11,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=725, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-27 20:30:11,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-27 20:30:11,920 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 725 flow [2024-06-27 20:30:11,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:11,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:11,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:11,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:30:11,920 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:11,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash -631089749, now seen corresponding path program 5 times [2024-06-27 20:30:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510853521] [2024-06-27 20:30:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:12,281 INFO 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 20:30:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510853521] [2024-06-27 20:30:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510853521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:12,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:12,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716175541] [2024-06-27 20:30:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:12,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:12,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:12,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 725 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:12,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:12,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:12,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:12,511 INFO L124 PetriNetUnfolderBase]: 319/563 cut-off events. [2024-06-27 20:30:12,511 INFO L125 PetriNetUnfolderBase]: For 17319/17319 co-relation queries the response was YES. [2024-06-27 20:30:12,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3056 conditions, 563 events. 319/563 cut-off events. For 17319/17319 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2260 event pairs, 53 based on Foata normal form. 3/564 useless extension candidates. Maximal degree in co-relation 3001. Up to 524 conditions per place. [2024-06-27 20:30:12,515 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 96 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-27 20:30:12,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 111 transitions, 991 flow [2024-06-27 20:30:12,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:12,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 20:30:12,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:30:12,516 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 725 flow. Second operand 8 states and 92 transitions. [2024-06-27 20:30:12,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 111 transitions, 991 flow [2024-06-27 20:30:12,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 914 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:12,538 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 701 flow [2024-06-27 20:30:12,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-06-27 20:30:12,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-27 20:30:12,538 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 701 flow [2024-06-27 20:30:12,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:12,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:12,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:12,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:30:12,539 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:12,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash -639363959, now seen corresponding path program 6 times [2024-06-27 20:30:12,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:12,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101362699] [2024-06-27 20:30:12,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:12,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:13,048 INFO 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 20:30:13,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101362699] [2024-06-27 20:30:13,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101362699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:13,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:13,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60182085] [2024-06-27 20:30:13,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:13,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:13,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:13,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:13,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:13,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:13,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:13,308 INFO L124 PetriNetUnfolderBase]: 313/554 cut-off events. [2024-06-27 20:30:13,308 INFO L125 PetriNetUnfolderBase]: For 16540/16540 co-relation queries the response was YES. [2024-06-27 20:30:13,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 554 events. 313/554 cut-off events. For 16540/16540 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2208 event pairs, 51 based on Foata normal form. 3/555 useless extension candidates. Maximal degree in co-relation 2842. Up to 478 conditions per place. [2024-06-27 20:30:13,311 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-27 20:30:13,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 959 flow [2024-06-27 20:30:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 20:30:13,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 20:30:13,313 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 701 flow. Second operand 8 states and 98 transitions. [2024-06-27 20:30:13,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 959 flow [2024-06-27 20:30:13,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 113 transitions, 930 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:13,331 INFO L231 Difference]: Finished difference. Result has 115 places, 99 transitions, 717 flow [2024-06-27 20:30:13,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=717, PETRI_PLACES=115, PETRI_TRANSITIONS=99} [2024-06-27 20:30:13,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-27 20:30:13,332 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 99 transitions, 717 flow [2024-06-27 20:30:13,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 20:30:13,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:13,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:30:13,333 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:13,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash -630781919, now seen corresponding path program 1 times [2024-06-27 20:30:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318103655] [2024-06-27 20:30:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:14,180 INFO 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 20:30:14,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318103655] [2024-06-27 20:30:14,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318103655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:14,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:14,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243931989] [2024-06-27 20:30:14,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:14,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:14,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:14,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:14,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:14,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:14,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 99 transitions, 717 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:14,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:14,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:14,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:14,571 INFO L124 PetriNetUnfolderBase]: 310/549 cut-off events. [2024-06-27 20:30:14,571 INFO L125 PetriNetUnfolderBase]: For 15761/15761 co-relation queries the response was YES. [2024-06-27 20:30:14,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 549 events. 310/549 cut-off events. For 15761/15761 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2168 event pairs, 48 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 2805. Up to 520 conditions per place. [2024-06-27 20:30:14,575 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 95 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2024-06-27 20:30:14,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 110 transitions, 957 flow [2024-06-27 20:30:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 20:30:14,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:30:14,576 INFO L175 Difference]: Start difference. First operand has 115 places, 99 transitions, 717 flow. Second operand 9 states and 96 transitions. [2024-06-27 20:30:14,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 110 transitions, 957 flow [2024-06-27 20:30:14,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 905 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:14,595 INFO L231 Difference]: Finished difference. Result has 117 places, 99 transitions, 695 flow [2024-06-27 20:30:14,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=695, PETRI_PLACES=117, PETRI_TRANSITIONS=99} [2024-06-27 20:30:14,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-27 20:30:14,596 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 99 transitions, 695 flow [2024-06-27 20:30:14,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:14,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:14,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:14,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:30:14,596 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:14,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:14,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1874456451, now seen corresponding path program 1 times [2024-06-27 20:30:14,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:14,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54238794] [2024-06-27 20:30:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:14,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:15,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:15,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54238794] [2024-06-27 20:30:15,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54238794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:15,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:15,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469443308] [2024-06-27 20:30:15,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:15,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:15,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:15,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:15,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:15,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:15,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 99 transitions, 695 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:15,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:15,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:15,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:15,510 INFO L124 PetriNetUnfolderBase]: 314/557 cut-off events. [2024-06-27 20:30:15,510 INFO L125 PetriNetUnfolderBase]: For 16552/16552 co-relation queries the response was YES. [2024-06-27 20:30:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 557 events. 314/557 cut-off events. For 16552/16552 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2233 event pairs, 36 based on Foata normal form. 2/557 useless extension candidates. Maximal degree in co-relation 2812. Up to 375 conditions per place. [2024-06-27 20:30:15,514 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 37 changer transitions 0/119 dead transitions. [2024-06-27 20:30:15,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 119 transitions, 1053 flow [2024-06-27 20:30:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 20:30:15,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-27 20:30:15,536 INFO L175 Difference]: Start difference. First operand has 117 places, 99 transitions, 695 flow. Second operand 9 states and 109 transitions. [2024-06-27 20:30:15,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 119 transitions, 1053 flow [2024-06-27 20:30:15,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 119 transitions, 1017 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:15,558 INFO L231 Difference]: Finished difference. Result has 118 places, 100 transitions, 745 flow [2024-06-27 20:30:15,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=118, PETRI_TRANSITIONS=100} [2024-06-27 20:30:15,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-27 20:30:15,558 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 100 transitions, 745 flow [2024-06-27 20:30:15,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:15,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:15,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:15,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:30:15,559 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:15,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1874369961, now seen corresponding path program 2 times [2024-06-27 20:30:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578753477] [2024-06-27 20:30:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:16,263 INFO 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 20:30:16,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:16,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578753477] [2024-06-27 20:30:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578753477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:16,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117228631] [2024-06-27 20:30:16,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:16,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:16,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:16,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 100 transitions, 745 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:16,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:16,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:16,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:16,526 INFO L124 PetriNetUnfolderBase]: 329/586 cut-off events. [2024-06-27 20:30:16,526 INFO L125 PetriNetUnfolderBase]: For 18889/18889 co-relation queries the response was YES. [2024-06-27 20:30:16,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 586 events. 329/586 cut-off events. For 18889/18889 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2419 event pairs, 54 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 3058. Up to 456 conditions per place. [2024-06-27 20:30:16,530 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 37 changer transitions 0/121 dead transitions. [2024-06-27 20:30:16,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 1123 flow [2024-06-27 20:30:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 20:30:16,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 20:30:16,531 INFO L175 Difference]: Start difference. First operand has 118 places, 100 transitions, 745 flow. Second operand 9 states and 112 transitions. [2024-06-27 20:30:16,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 121 transitions, 1123 flow [2024-06-27 20:30:16,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 1042 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:16,556 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 774 flow [2024-06-27 20:30:16,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-06-27 20:30:16,556 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-27 20:30:16,557 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 774 flow [2024-06-27 20:30:16,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:16,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:16,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:16,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:30:16,557 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:16,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash -360150116, now seen corresponding path program 1 times [2024-06-27 20:30:16,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:16,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670763848] [2024-06-27 20:30:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:16,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:17,237 INFO 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 20:30:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670763848] [2024-06-27 20:30:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670763848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:17,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:17,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:17,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933149915] [2024-06-27 20:30:17,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:17,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:17,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:17,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:17,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 774 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:17,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:17,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:17,653 INFO L124 PetriNetUnfolderBase]: 348/617 cut-off events. [2024-06-27 20:30:17,653 INFO L125 PetriNetUnfolderBase]: For 22082/22082 co-relation queries the response was YES. [2024-06-27 20:30:17,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 617 events. 348/617 cut-off events. For 22082/22082 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2602 event pairs, 52 based on Foata normal form. 3/618 useless extension candidates. Maximal degree in co-relation 3269. Up to 322 conditions per place. [2024-06-27 20:30:17,658 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 74 selfloop transitions, 58 changer transitions 0/134 dead transitions. [2024-06-27 20:30:17,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 134 transitions, 1214 flow [2024-06-27 20:30:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:30:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:30:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 20:30:17,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-27 20:30:17,659 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 774 flow. Second operand 12 states and 151 transitions. [2024-06-27 20:30:17,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 134 transitions, 1214 flow [2024-06-27 20:30:17,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 1151 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:17,686 INFO L231 Difference]: Finished difference. Result has 129 places, 109 transitions, 902 flow [2024-06-27 20:30:17,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=902, PETRI_PLACES=129, PETRI_TRANSITIONS=109} [2024-06-27 20:30:17,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-27 20:30:17,687 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 109 transitions, 902 flow [2024-06-27 20:30:17,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:17,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:17,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:17,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:30:17,687 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:17,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:17,688 INFO L85 PathProgramCache]: Analyzing trace with hash 347610233, now seen corresponding path program 3 times [2024-06-27 20:30:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:17,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127629320] [2024-06-27 20:30:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:18,413 INFO 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 20:30:18,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127629320] [2024-06-27 20:30:18,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127629320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:18,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:18,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274781621] [2024-06-27 20:30:18,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:18,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:18,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:18,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:18,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 109 transitions, 902 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:18,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:18,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:18,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:18,793 INFO L124 PetriNetUnfolderBase]: 349/620 cut-off events. [2024-06-27 20:30:18,793 INFO L125 PetriNetUnfolderBase]: For 22632/22632 co-relation queries the response was YES. [2024-06-27 20:30:18,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 620 events. 349/620 cut-off events. For 22632/22632 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2595 event pairs, 61 based on Foata normal form. 4/622 useless extension candidates. Maximal degree in co-relation 3445. Up to 499 conditions per place. [2024-06-27 20:30:18,797 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 83 selfloop transitions, 43 changer transitions 0/128 dead transitions. [2024-06-27 20:30:18,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 128 transitions, 1203 flow [2024-06-27 20:30:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:30:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:30:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:30:18,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:30:18,817 INFO L175 Difference]: Start difference. First operand has 129 places, 109 transitions, 902 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:30:18,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 128 transitions, 1203 flow [2024-06-27 20:30:18,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 1117 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:18,848 INFO L231 Difference]: Finished difference. Result has 132 places, 110 transitions, 918 flow [2024-06-27 20:30:18,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=918, PETRI_PLACES=132, PETRI_TRANSITIONS=110} [2024-06-27 20:30:18,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-27 20:30:18,848 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 110 transitions, 918 flow [2024-06-27 20:30:18,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:18,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:18,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:18,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:30:18,849 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:18,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash -433101775, now seen corresponding path program 4 times [2024-06-27 20:30:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140821303] [2024-06-27 20:30:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:19,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:19,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140821303] [2024-06-27 20:30:19,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140821303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:19,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:19,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:19,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722399630] [2024-06-27 20:30:19,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:19,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:19,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:19,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:19,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:19,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 110 transitions, 918 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:19,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:19,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:19,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:19,901 INFO L124 PetriNetUnfolderBase]: 353/628 cut-off events. [2024-06-27 20:30:19,901 INFO L125 PetriNetUnfolderBase]: For 22025/22025 co-relation queries the response was YES. [2024-06-27 20:30:19,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3588 conditions, 628 events. 353/628 cut-off events. For 22025/22025 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2655 event pairs, 61 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 3524. Up to 528 conditions per place. [2024-06-27 20:30:19,906 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 93 selfloop transitions, 30 changer transitions 0/125 dead transitions. [2024-06-27 20:30:19,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 125 transitions, 1205 flow [2024-06-27 20:30:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 20:30:19,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:30:19,908 INFO L175 Difference]: Start difference. First operand has 132 places, 110 transitions, 918 flow. Second operand 9 states and 108 transitions. [2024-06-27 20:30:19,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 125 transitions, 1205 flow [2024-06-27 20:30:19,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 125 transitions, 1122 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:30:19,943 INFO L231 Difference]: Finished difference. Result has 132 places, 111 transitions, 910 flow [2024-06-27 20:30:19,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=132, PETRI_TRANSITIONS=111} [2024-06-27 20:30:19,944 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-27 20:30:19,944 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 111 transitions, 910 flow [2024-06-27 20:30:19,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:19,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:19,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:19,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:30:19,945 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:19,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash -994403207, now seen corresponding path program 5 times [2024-06-27 20:30:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956914861] [2024-06-27 20:30:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956914861] [2024-06-27 20:30:20,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956914861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:20,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:20,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500791523] [2024-06-27 20:30:20,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:20,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:20,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 111 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:20,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:20,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:20,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:20,973 INFO L124 PetriNetUnfolderBase]: 357/636 cut-off events. [2024-06-27 20:30:20,973 INFO L125 PetriNetUnfolderBase]: For 23245/23245 co-relation queries the response was YES. [2024-06-27 20:30:20,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3627 conditions, 636 events. 357/636 cut-off events. For 23245/23245 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2707 event pairs, 42 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 3562. Up to 499 conditions per place. [2024-06-27 20:30:20,978 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 37 changer transitions 0/133 dead transitions. [2024-06-27 20:30:20,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 1315 flow [2024-06-27 20:30:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 20:30:20,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 20:30:20,980 INFO L175 Difference]: Start difference. First operand has 132 places, 111 transitions, 910 flow. Second operand 9 states and 116 transitions. [2024-06-27 20:30:20,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 1315 flow [2024-06-27 20:30:21,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 133 transitions, 1248 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:21,017 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 932 flow [2024-06-27 20:30:21,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=932, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-06-27 20:30:21,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-27 20:30:21,018 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 932 flow [2024-06-27 20:30:21,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:21,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:21,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:21,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:30:21,019 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:21,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash -994399332, now seen corresponding path program 2 times [2024-06-27 20:30:21,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:21,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713843537] [2024-06-27 20:30:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:21,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:21,716 INFO 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 20:30:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713843537] [2024-06-27 20:30:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713843537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815719269] [2024-06-27 20:30:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:21,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:21,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:21,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 932 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:21,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:21,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:21,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:21,991 INFO L124 PetriNetUnfolderBase]: 363/646 cut-off events. [2024-06-27 20:30:21,991 INFO L125 PetriNetUnfolderBase]: For 23469/23469 co-relation queries the response was YES. [2024-06-27 20:30:21,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 646 events. 363/646 cut-off events. For 23469/23469 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2769 event pairs, 58 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 3655. Up to 492 conditions per place. [2024-06-27 20:30:21,996 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 45 changer transitions 0/149 dead transitions. [2024-06-27 20:30:21,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 149 transitions, 1495 flow [2024-06-27 20:30:21,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 20:30:21,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-27 20:30:21,997 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 932 flow. Second operand 9 states and 119 transitions. [2024-06-27 20:30:21,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 149 transitions, 1495 flow [2024-06-27 20:30:22,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 149 transitions, 1375 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:22,040 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 1118 flow [2024-06-27 20:30:22,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1118, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2024-06-27 20:30:22,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-27 20:30:22,041 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 1118 flow [2024-06-27 20:30:22,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:22,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:22,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:22,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:30:22,042 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:22,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash -286638983, now seen corresponding path program 6 times [2024-06-27 20:30:22,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:22,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743853751] [2024-06-27 20:30:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:22,728 INFO 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 20:30:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743853751] [2024-06-27 20:30:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743853751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:22,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:22,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902411053] [2024-06-27 20:30:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:22,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:22,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:22,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 1118 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:22,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:22,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:22,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:23,028 INFO L124 PetriNetUnfolderBase]: 367/654 cut-off events. [2024-06-27 20:30:23,029 INFO L125 PetriNetUnfolderBase]: For 25713/25713 co-relation queries the response was YES. [2024-06-27 20:30:23,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3853 conditions, 654 events. 367/654 cut-off events. For 25713/25713 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2826 event pairs, 57 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 3785. Up to 555 conditions per place. [2024-06-27 20:30:23,033 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-06-27 20:30:23,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 150 transitions, 1469 flow [2024-06-27 20:30:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 20:30:23,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 20:30:23,034 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 1118 flow. Second operand 9 states and 114 transitions. [2024-06-27 20:30:23,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 150 transitions, 1469 flow [2024-06-27 20:30:23,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 150 transitions, 1435 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:23,079 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 1173 flow [2024-06-27 20:30:23,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1173, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2024-06-27 20:30:23,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 20:30:23,080 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 1173 flow [2024-06-27 20:30:23,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:23,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:23,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:23,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:30:23,080 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:23,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:23,081 INFO L85 PathProgramCache]: Analyzing trace with hash -988685412, now seen corresponding path program 3 times [2024-06-27 20:30:23,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:23,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953489928] [2024-06-27 20:30:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:23,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953489928] [2024-06-27 20:30:23,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953489928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:23,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:23,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:23,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917349901] [2024-06-27 20:30:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:23,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:23,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:23,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:23,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 1173 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:23,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:23,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:23,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:23,963 INFO L124 PetriNetUnfolderBase]: 370/659 cut-off events. [2024-06-27 20:30:23,963 INFO L125 PetriNetUnfolderBase]: For 25835/25835 co-relation queries the response was YES. [2024-06-27 20:30:23,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 659 events. 370/659 cut-off events. For 25835/25835 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2857 event pairs, 58 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 3847. Up to 549 conditions per place. [2024-06-27 20:30:23,967 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 36 changer transitions 0/148 dead transitions. [2024-06-27 20:30:23,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 148 transitions, 1528 flow [2024-06-27 20:30:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 20:30:23,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:30:23,968 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 1173 flow. Second operand 9 states and 108 transitions. [2024-06-27 20:30:23,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 148 transitions, 1528 flow [2024-06-27 20:30:24,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 148 transitions, 1458 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:24,007 INFO L231 Difference]: Finished difference. Result has 146 places, 136 transitions, 1219 flow [2024-06-27 20:30:24,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1219, PETRI_PLACES=146, PETRI_TRANSITIONS=136} [2024-06-27 20:30:24,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-27 20:30:24,008 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 136 transitions, 1219 flow [2024-06-27 20:30:24,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:24,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:24,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:24,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:30:24,009 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:24,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash -289057640, now seen corresponding path program 4 times [2024-06-27 20:30:24,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:24,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373436568] [2024-06-27 20:30:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:24,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:24,669 INFO 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 20:30:24,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:24,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373436568] [2024-06-27 20:30:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373436568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:24,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048097271] [2024-06-27 20:30:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:24,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:24,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:24,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:24,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 136 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:24,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:24,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:24,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:24,961 INFO L124 PetriNetUnfolderBase]: 379/674 cut-off events. [2024-06-27 20:30:24,961 INFO L125 PetriNetUnfolderBase]: For 29090/29090 co-relation queries the response was YES. [2024-06-27 20:30:24,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 674 events. 379/674 cut-off events. For 29090/29090 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2942 event pairs, 50 based on Foata normal form. 3/675 useless extension candidates. Maximal degree in co-relation 3965. Up to 474 conditions per place. [2024-06-27 20:30:24,965 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 51 changer transitions 0/158 dead transitions. [2024-06-27 20:30:24,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 158 transitions, 1622 flow [2024-06-27 20:30:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 20:30:24,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-27 20:30:24,967 INFO L175 Difference]: Start difference. First operand has 146 places, 136 transitions, 1219 flow. Second operand 9 states and 119 transitions. [2024-06-27 20:30:24,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 158 transitions, 1622 flow [2024-06-27 20:30:25,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 158 transitions, 1576 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:25,010 INFO L231 Difference]: Finished difference. Result has 151 places, 140 transitions, 1338 flow [2024-06-27 20:30:25,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1338, PETRI_PLACES=151, PETRI_TRANSITIONS=140} [2024-06-27 20:30:25,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-27 20:30:25,011 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 140 transitions, 1338 flow [2024-06-27 20:30:25,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:25,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:25,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:25,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:30:25,012 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:25,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:25,012 INFO L85 PathProgramCache]: Analyzing trace with hash -988892802, now seen corresponding path program 5 times [2024-06-27 20:30:25,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:25,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871781248] [2024-06-27 20:30:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:25,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:25,665 INFO 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 20:30:25,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:25,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871781248] [2024-06-27 20:30:25,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871781248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:25,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:25,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441375206] [2024-06-27 20:30:25,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:25,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:25,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:25,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 140 transitions, 1338 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:25,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:25,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:25,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:26,033 INFO L124 PetriNetUnfolderBase]: 392/695 cut-off events. [2024-06-27 20:30:26,034 INFO L125 PetriNetUnfolderBase]: For 30749/30749 co-relation queries the response was YES. [2024-06-27 20:30:26,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4361 conditions, 695 events. 392/695 cut-off events. For 30749/30749 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3055 event pairs, 50 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 4291. Up to 475 conditions per place. [2024-06-27 20:30:26,039 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 59 changer transitions 0/165 dead transitions. [2024-06-27 20:30:26,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 165 transitions, 1860 flow [2024-06-27 20:30:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 20:30:26,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-27 20:30:26,040 INFO L175 Difference]: Start difference. First operand has 151 places, 140 transitions, 1338 flow. Second operand 10 states and 132 transitions. [2024-06-27 20:30:26,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 165 transitions, 1860 flow [2024-06-27 20:30:26,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 165 transitions, 1744 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:26,089 INFO L231 Difference]: Finished difference. Result has 155 places, 144 transitions, 1422 flow [2024-06-27 20:30:26,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1422, PETRI_PLACES=155, PETRI_TRANSITIONS=144} [2024-06-27 20:30:26,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-27 20:30:26,091 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 144 transitions, 1422 flow [2024-06-27 20:30:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:26,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:26,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:26,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:30:26,091 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:26,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash -286489098, now seen corresponding path program 6 times [2024-06-27 20:30:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:26,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960493221] [2024-06-27 20:30:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960493221] [2024-06-27 20:30:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960493221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:26,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:26,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972842546] [2024-06-27 20:30:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:26,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:26,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:26,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:26,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:26,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 144 transitions, 1422 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:26,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:26,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:26,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:27,095 INFO L124 PetriNetUnfolderBase]: 401/710 cut-off events. [2024-06-27 20:30:27,096 INFO L125 PetriNetUnfolderBase]: For 34521/34521 co-relation queries the response was YES. [2024-06-27 20:30:27,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4541 conditions, 710 events. 401/710 cut-off events. For 34521/34521 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3134 event pairs, 49 based on Foata normal form. 3/711 useless extension candidates. Maximal degree in co-relation 4469. Up to 510 conditions per place. [2024-06-27 20:30:27,100 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 58 changer transitions 0/168 dead transitions. [2024-06-27 20:30:27,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 168 transitions, 1866 flow [2024-06-27 20:30:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 20:30:27,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 20:30:27,101 INFO L175 Difference]: Start difference. First operand has 155 places, 144 transitions, 1422 flow. Second operand 9 states and 120 transitions. [2024-06-27 20:30:27,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 168 transitions, 1866 flow [2024-06-27 20:30:27,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 168 transitions, 1756 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:27,149 INFO L231 Difference]: Finished difference. Result has 157 places, 148 transitions, 1506 flow [2024-06-27 20:30:27,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1506, PETRI_PLACES=157, PETRI_TRANSITIONS=148} [2024-06-27 20:30:27,149 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-27 20:30:27,149 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 148 transitions, 1506 flow [2024-06-27 20:30:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:27,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:27,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:27,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:30:27,150 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:27,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash -281132453, now seen corresponding path program 7 times [2024-06-27 20:30:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:27,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337246249] [2024-06-27 20:30:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337246249] [2024-06-27 20:30:27,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337246249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:27,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845087043] [2024-06-27 20:30:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:27,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:27,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 148 transitions, 1506 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:27,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:27,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:27,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:28,057 INFO L124 PetriNetUnfolderBase]: 405/718 cut-off events. [2024-06-27 20:30:28,058 INFO L125 PetriNetUnfolderBase]: For 34740/34740 co-relation queries the response was YES. [2024-06-27 20:30:28,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 718 events. 405/718 cut-off events. For 34740/34740 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3165 event pairs, 64 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4557. Up to 640 conditions per place. [2024-06-27 20:30:28,062 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 134 selfloop transitions, 26 changer transitions 0/162 dead transitions. [2024-06-27 20:30:28,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 1867 flow [2024-06-27 20:30:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 20:30:28,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:30:28,064 INFO L175 Difference]: Start difference. First operand has 157 places, 148 transitions, 1506 flow. Second operand 9 states and 105 transitions. [2024-06-27 20:30:28,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 1867 flow [2024-06-27 20:30:28,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 162 transitions, 1721 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:28,125 INFO L231 Difference]: Finished difference. Result has 159 places, 149 transitions, 1429 flow [2024-06-27 20:30:28,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1429, PETRI_PLACES=159, PETRI_TRANSITIONS=149} [2024-06-27 20:30:28,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-27 20:30:28,130 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 149 transitions, 1429 flow [2024-06-27 20:30:28,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:28,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:28,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:28,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:30:28,130 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:28,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash -286494833, now seen corresponding path program 8 times [2024-06-27 20:30:28,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:28,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362537489] [2024-06-27 20:30:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:28,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:28,764 INFO 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 20:30:28,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:28,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362537489] [2024-06-27 20:30:28,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362537489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:28,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:28,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:28,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362472933] [2024-06-27 20:30:28,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:28,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:28,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:28,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:28,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 149 transitions, 1429 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:28,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:28,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:28,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:29,050 INFO L124 PetriNetUnfolderBase]: 409/726 cut-off events. [2024-06-27 20:30:29,050 INFO L125 PetriNetUnfolderBase]: For 35964/35964 co-relation queries the response was YES. [2024-06-27 20:30:29,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 726 events. 409/726 cut-off events. For 35964/35964 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3233 event pairs, 62 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 4503. Up to 648 conditions per place. [2024-06-27 20:30:29,055 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 135 selfloop transitions, 29 changer transitions 0/166 dead transitions. [2024-06-27 20:30:29,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 166 transitions, 1808 flow [2024-06-27 20:30:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 20:30:29,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-27 20:30:29,057 INFO L175 Difference]: Start difference. First operand has 159 places, 149 transitions, 1429 flow. Second operand 9 states and 109 transitions. [2024-06-27 20:30:29,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 166 transitions, 1808 flow [2024-06-27 20:30:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 166 transitions, 1750 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:29,119 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 1448 flow [2024-06-27 20:30:29,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1448, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2024-06-27 20:30:29,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-27 20:30:29,120 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 1448 flow [2024-06-27 20:30:29,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:29,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:29,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:30:29,121 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:29,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash -286494678, now seen corresponding path program 7 times [2024-06-27 20:30:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129319790] [2024-06-27 20:30:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:29,833 INFO 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 20:30:29,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:29,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129319790] [2024-06-27 20:30:29,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129319790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:29,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:29,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:29,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99250680] [2024-06-27 20:30:29,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:29,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:29,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:29,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:29,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 150 transitions, 1448 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:29,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:29,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:29,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:30,122 INFO L124 PetriNetUnfolderBase]: 412/731 cut-off events. [2024-06-27 20:30:30,122 INFO L125 PetriNetUnfolderBase]: For 36150/36150 co-relation queries the response was YES. [2024-06-27 20:30:30,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 731 events. 412/731 cut-off events. For 36150/36150 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3265 event pairs, 63 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 4577. Up to 615 conditions per place. [2024-06-27 20:30:30,127 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 44 changer transitions 0/168 dead transitions. [2024-06-27 20:30:30,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 168 transitions, 1858 flow [2024-06-27 20:30:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 20:30:30,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 20:30:30,128 INFO L175 Difference]: Start difference. First operand has 161 places, 150 transitions, 1448 flow. Second operand 9 states and 114 transitions. [2024-06-27 20:30:30,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 168 transitions, 1858 flow [2024-06-27 20:30:30,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 168 transitions, 1776 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:30,193 INFO L231 Difference]: Finished difference. Result has 162 places, 153 transitions, 1505 flow [2024-06-27 20:30:30,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1505, PETRI_PLACES=162, PETRI_TRANSITIONS=153} [2024-06-27 20:30:30,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-27 20:30:30,194 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 153 transitions, 1505 flow [2024-06-27 20:30:30,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:30,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:30,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:30,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:30:30,194 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:30,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1911055094, now seen corresponding path program 8 times [2024-06-27 20:30:30,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:30,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793015123] [2024-06-27 20:30:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:30,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793015123] [2024-06-27 20:30:30,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793015123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:30,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:30,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:30,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035042566] [2024-06-27 20:30:30,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:30,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:30,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:30,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:30,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:30,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:30,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 153 transitions, 1505 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:30,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:30,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:30,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:31,007 INFO L124 PetriNetUnfolderBase]: 421/746 cut-off events. [2024-06-27 20:30:31,008 INFO L125 PetriNetUnfolderBase]: For 40404/40404 co-relation queries the response was YES. [2024-06-27 20:30:31,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 746 events. 421/746 cut-off events. For 40404/40404 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3347 event pairs, 57 based on Foata normal form. 3/747 useless extension candidates. Maximal degree in co-relation 4735. Up to 696 conditions per place. [2024-06-27 20:30:31,012 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2024-06-27 20:30:31,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 171 transitions, 1959 flow [2024-06-27 20:30:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 20:30:31,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 20:30:31,033 INFO L175 Difference]: Start difference. First operand has 162 places, 153 transitions, 1505 flow. Second operand 9 states and 103 transitions. [2024-06-27 20:30:31,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 171 transitions, 1959 flow [2024-06-27 20:30:31,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 171 transitions, 1856 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:31,099 INFO L231 Difference]: Finished difference. Result has 166 places, 157 transitions, 1534 flow [2024-06-27 20:30:31,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1534, PETRI_PLACES=166, PETRI_TRANSITIONS=157} [2024-06-27 20:30:31,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-27 20:30:31,100 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 157 transitions, 1534 flow [2024-06-27 20:30:31,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:31,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:31,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:31,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:30:31,101 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:31,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:31,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347194, now seen corresponding path program 9 times [2024-06-27 20:30:31,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:31,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375797698] [2024-06-27 20:30:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:31,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:31,566 INFO 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 20:30:31,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:31,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375797698] [2024-06-27 20:30:31,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375797698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:31,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:31,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:31,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000850643] [2024-06-27 20:30:31,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:31,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:31,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:31,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:31,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 157 transitions, 1534 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:31,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:31,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:31,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:31,857 INFO L124 PetriNetUnfolderBase]: 424/751 cut-off events. [2024-06-27 20:30:31,858 INFO L125 PetriNetUnfolderBase]: For 39262/39262 co-relation queries the response was YES. [2024-06-27 20:30:31,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4840 conditions, 751 events. 424/751 cut-off events. For 39262/39262 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3370 event pairs, 63 based on Foata normal form. 1/750 useless extension candidates. Maximal degree in co-relation 4763. Up to 698 conditions per place. [2024-06-27 20:30:31,863 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 25 changer transitions 0/169 dead transitions. [2024-06-27 20:30:31,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 169 transitions, 2038 flow [2024-06-27 20:30:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 20:30:31,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:30:31,864 INFO L175 Difference]: Start difference. First operand has 166 places, 157 transitions, 1534 flow. Second operand 9 states and 102 transitions. [2024-06-27 20:30:31,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 169 transitions, 2038 flow [2024-06-27 20:30:31,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 169 transitions, 1958 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:31,936 INFO L231 Difference]: Finished difference. Result has 168 places, 159 transitions, 1553 flow [2024-06-27 20:30:31,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1553, PETRI_PLACES=168, PETRI_TRANSITIONS=159} [2024-06-27 20:30:31,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-27 20:30:31,936 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 159 transitions, 1553 flow [2024-06-27 20:30:31,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:31,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:31,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:31,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:30:31,937 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:31,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347039, now seen corresponding path program 9 times [2024-06-27 20:30:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:31,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78040699] [2024-06-27 20:30:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:31,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:32,480 INFO 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 20:30:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78040699] [2024-06-27 20:30:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78040699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:32,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:32,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266311969] [2024-06-27 20:30:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:32,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:32,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:32,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 159 transitions, 1553 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:32,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:32,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:32,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:32,772 INFO L124 PetriNetUnfolderBase]: 421/746 cut-off events. [2024-06-27 20:30:32,772 INFO L125 PetriNetUnfolderBase]: For 39187/39187 co-relation queries the response was YES. [2024-06-27 20:30:32,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4704 conditions, 746 events. 421/746 cut-off events. For 39187/39187 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3349 event pairs, 60 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4626. Up to 717 conditions per place. [2024-06-27 20:30:32,777 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 153 selfloop transitions, 14 changer transitions 0/169 dead transitions. [2024-06-27 20:30:32,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 169 transitions, 1909 flow [2024-06-27 20:30:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:30:32,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:30:32,778 INFO L175 Difference]: Start difference. First operand has 168 places, 159 transitions, 1553 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:30:32,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 169 transitions, 1909 flow [2024-06-27 20:30:32,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 169 transitions, 1835 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:32,849 INFO L231 Difference]: Finished difference. Result has 172 places, 159 transitions, 1511 flow [2024-06-27 20:30:32,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1511, PETRI_PLACES=172, PETRI_TRANSITIONS=159} [2024-06-27 20:30:32,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-27 20:30:32,850 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 159 transitions, 1511 flow [2024-06-27 20:30:32,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:32,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:32,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:32,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:30:32,851 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:32,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1911322221, now seen corresponding path program 1 times [2024-06-27 20:30:32,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:32,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779573865] [2024-06-27 20:30:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:32,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:33,469 INFO 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 20:30:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779573865] [2024-06-27 20:30:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779573865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:33,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:33,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:33,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493987416] [2024-06-27 20:30:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:33,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:33,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:33,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 159 transitions, 1511 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:33,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:33,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:33,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:33,812 INFO L124 PetriNetUnfolderBase]: 417/740 cut-off events. [2024-06-27 20:30:33,812 INFO L125 PetriNetUnfolderBase]: For 37407/37407 co-relation queries the response was YES. [2024-06-27 20:30:33,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 740 events. 417/740 cut-off events. For 37407/37407 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3313 event pairs, 57 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4468. Up to 701 conditions per place. [2024-06-27 20:30:33,817 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 15 changer transitions 0/173 dead transitions. [2024-06-27 20:30:33,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 173 transitions, 1893 flow [2024-06-27 20:30:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:30:33,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:30:33,818 INFO L175 Difference]: Start difference. First operand has 172 places, 159 transitions, 1511 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:30:33,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 173 transitions, 1893 flow [2024-06-27 20:30:33,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 173 transitions, 1815 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:30:33,873 INFO L231 Difference]: Finished difference. Result has 172 places, 161 transitions, 1486 flow [2024-06-27 20:30:33,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1486, PETRI_PLACES=172, PETRI_TRANSITIONS=161} [2024-06-27 20:30:33,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-27 20:30:33,874 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 161 transitions, 1486 flow [2024-06-27 20:30:33,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:33,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:33,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:33,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:30:33,874 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:33,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:33,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1039119140, now seen corresponding path program 10 times [2024-06-27 20:30:33,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:33,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144293593] [2024-06-27 20:30:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:34,453 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 20:30:34,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:34,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144293593] [2024-06-27 20:30:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144293593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:34,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:34,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:34,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22834677] [2024-06-27 20:30:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:34,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:34,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:34,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:34,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:34,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:34,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 161 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:34,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:34,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:34,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:34,749 INFO L124 PetriNetUnfolderBase]: 420/745 cut-off events. [2024-06-27 20:30:34,750 INFO L125 PetriNetUnfolderBase]: For 37178/37178 co-relation queries the response was YES. [2024-06-27 20:30:34,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 745 events. 420/745 cut-off events. For 37178/37178 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3333 event pairs, 61 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 4513. Up to 704 conditions per place. [2024-06-27 20:30:34,755 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 21 changer transitions 0/173 dead transitions. [2024-06-27 20:30:34,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 173 transitions, 1900 flow [2024-06-27 20:30:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:30:34,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:30:34,756 INFO L175 Difference]: Start difference. First operand has 172 places, 161 transitions, 1486 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:30:34,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 173 transitions, 1900 flow [2024-06-27 20:30:34,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 1863 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:34,819 INFO L231 Difference]: Finished difference. Result has 174 places, 164 transitions, 1552 flow [2024-06-27 20:30:34,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1552, PETRI_PLACES=174, PETRI_TRANSITIONS=164} [2024-06-27 20:30:34,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-27 20:30:34,820 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 164 transitions, 1552 flow [2024-06-27 20:30:34,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:34,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:34,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:34,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:30:34,820 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:34,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1038917330, now seen corresponding path program 11 times [2024-06-27 20:30:34,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:34,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022104531] [2024-06-27 20:30:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:34,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:35,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:35,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022104531] [2024-06-27 20:30:35,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022104531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:35,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:35,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105433782] [2024-06-27 20:30:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:35,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:35,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:35,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:35,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 164 transitions, 1552 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:35,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:35,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:35,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:35,702 INFO L124 PetriNetUnfolderBase]: 418/742 cut-off events. [2024-06-27 20:30:35,703 INFO L125 PetriNetUnfolderBase]: For 37016/37016 co-relation queries the response was YES. [2024-06-27 20:30:35,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4544 conditions, 742 events. 418/742 cut-off events. For 37016/37016 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3346 event pairs, 57 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 4463. Up to 701 conditions per place. [2024-06-27 20:30:35,709 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2024-06-27 20:30:35,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 175 transitions, 1934 flow [2024-06-27 20:30:35,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 20:30:35,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 20:30:35,710 INFO L175 Difference]: Start difference. First operand has 174 places, 164 transitions, 1552 flow. Second operand 9 states and 101 transitions. [2024-06-27 20:30:35,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 175 transitions, 1934 flow [2024-06-27 20:30:35,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 1839 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:35,777 INFO L231 Difference]: Finished difference. Result has 177 places, 166 transitions, 1522 flow [2024-06-27 20:30:35,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1522, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2024-06-27 20:30:35,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-27 20:30:35,778 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 1522 flow [2024-06-27 20:30:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:35,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:35,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:30:35,778 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:35,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2127775880, now seen corresponding path program 1 times [2024-06-27 20:30:35,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820497702] [2024-06-27 20:30:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:36,472 INFO 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 20:30:36,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:36,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820497702] [2024-06-27 20:30:36,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820497702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:36,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:36,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562556201] [2024-06-27 20:30:36,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:36,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:36,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 1522 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:36,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:36,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:36,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:36,771 INFO L124 PetriNetUnfolderBase]: 422/750 cut-off events. [2024-06-27 20:30:36,772 INFO L125 PetriNetUnfolderBase]: For 39642/39642 co-relation queries the response was YES. [2024-06-27 20:30:36,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 750 events. 422/750 cut-off events. For 39642/39642 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3393 event pairs, 43 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 4465. Up to 378 conditions per place. [2024-06-27 20:30:36,776 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 66 changer transitions 0/189 dead transitions. [2024-06-27 20:30:36,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 189 transitions, 2071 flow [2024-06-27 20:30:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:30:36,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:30:36,778 INFO L175 Difference]: Start difference. First operand has 177 places, 166 transitions, 1522 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:30:36,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 189 transitions, 2071 flow [2024-06-27 20:30:36,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 189 transitions, 2037 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:36,857 INFO L231 Difference]: Finished difference. Result has 184 places, 168 transitions, 1684 flow [2024-06-27 20:30:36,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1684, PETRI_PLACES=184, PETRI_TRANSITIONS=168} [2024-06-27 20:30:36,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-27 20:30:36,858 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 168 transitions, 1684 flow [2024-06-27 20:30:36,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:36,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:36,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:36,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:30:36,858 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:36,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1720129186, now seen corresponding path program 2 times [2024-06-27 20:30:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:36,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640732719] [2024-06-27 20:30:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:36,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:37,613 INFO 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 20:30:37,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:37,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640732719] [2024-06-27 20:30:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640732719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:37,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:37,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:37,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30920295] [2024-06-27 20:30:37,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:37,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:37,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:37,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:37,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:37,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 168 transitions, 1684 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:37,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:37,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:37,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:38,041 INFO L124 PetriNetUnfolderBase]: 476/856 cut-off events. [2024-06-27 20:30:38,041 INFO L125 PetriNetUnfolderBase]: For 68139/68139 co-relation queries the response was YES. [2024-06-27 20:30:38,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 856 events. 476/856 cut-off events. For 68139/68139 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4043 event pairs, 57 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5956. Up to 371 conditions per place. [2024-06-27 20:30:38,048 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 95 changer transitions 0/203 dead transitions. [2024-06-27 20:30:38,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 203 transitions, 2448 flow [2024-06-27 20:30:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:30:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:30:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 20:30:38,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44868035190615835 [2024-06-27 20:30:38,057 INFO L175 Difference]: Start difference. First operand has 184 places, 168 transitions, 1684 flow. Second operand 11 states and 153 transitions. [2024-06-27 20:30:38,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 203 transitions, 2448 flow [2024-06-27 20:30:38,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 203 transitions, 2312 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:38,173 INFO L231 Difference]: Finished difference. Result has 189 places, 171 transitions, 1796 flow [2024-06-27 20:30:38,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1796, PETRI_PLACES=189, PETRI_TRANSITIONS=171} [2024-06-27 20:30:38,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-27 20:30:38,175 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 171 transitions, 1796 flow [2024-06-27 20:30:38,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:38,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:38,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:30:38,175 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:38,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2108978810, now seen corresponding path program 1 times [2024-06-27 20:30:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:38,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560297155] [2024-06-27 20:30:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:39,047 INFO 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 20:30:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:39,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560297155] [2024-06-27 20:30:39,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560297155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:39,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:39,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:39,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563772489] [2024-06-27 20:30:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:39,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:39,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:39,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 171 transitions, 1796 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:39,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:39,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:39,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:39,539 INFO L124 PetriNetUnfolderBase]: 492/882 cut-off events. [2024-06-27 20:30:39,539 INFO L125 PetriNetUnfolderBase]: For 74244/74244 co-relation queries the response was YES. [2024-06-27 20:30:39,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6371 conditions, 882 events. 492/882 cut-off events. For 74244/74244 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4158 event pairs, 71 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 6286. Up to 524 conditions per place. [2024-06-27 20:30:39,545 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 109 selfloop transitions, 90 changer transitions 0/201 dead transitions. [2024-06-27 20:30:39,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 201 transitions, 2414 flow [2024-06-27 20:30:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:30:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:30:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 168 transitions. [2024-06-27 20:30:39,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:30:39,546 INFO L175 Difference]: Start difference. First operand has 189 places, 171 transitions, 1796 flow. Second operand 14 states and 168 transitions. [2024-06-27 20:30:39,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 201 transitions, 2414 flow [2024-06-27 20:30:39,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 2284 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:39,668 INFO L231 Difference]: Finished difference. Result has 197 places, 176 transitions, 1910 flow [2024-06-27 20:30:39,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1910, PETRI_PLACES=197, PETRI_TRANSITIONS=176} [2024-06-27 20:30:39,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-27 20:30:39,669 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 176 transitions, 1910 flow [2024-06-27 20:30:39,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:39,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:39,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:39,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:30:39,670 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:39,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2108978996, now seen corresponding path program 3 times [2024-06-27 20:30:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:39,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554884267] [2024-06-27 20:30:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:39,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:40,449 INFO 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 20:30:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554884267] [2024-06-27 20:30:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554884267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573752633] [2024-06-27 20:30:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:40,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:40,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:40,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 176 transitions, 1910 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:40,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:40,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:40,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:40,836 INFO L124 PetriNetUnfolderBase]: 499/895 cut-off events. [2024-06-27 20:30:40,836 INFO L125 PetriNetUnfolderBase]: For 76386/76386 co-relation queries the response was YES. [2024-06-27 20:30:40,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6657 conditions, 895 events. 499/895 cut-off events. For 76386/76386 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4266 event pairs, 91 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 6569. Up to 703 conditions per place. [2024-06-27 20:30:40,842 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 68 changer transitions 0/196 dead transitions. [2024-06-27 20:30:40,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 196 transitions, 2369 flow [2024-06-27 20:30:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:30:40,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:30:40,843 INFO L175 Difference]: Start difference. First operand has 197 places, 176 transitions, 1910 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:30:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 196 transitions, 2369 flow [2024-06-27 20:30:40,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 2178 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 20:30:40,976 INFO L231 Difference]: Finished difference. Result has 197 places, 179 transitions, 1892 flow [2024-06-27 20:30:40,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1892, PETRI_PLACES=197, PETRI_TRANSITIONS=179} [2024-06-27 20:30:40,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-27 20:30:40,977 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 179 transitions, 1892 flow [2024-06-27 20:30:40,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:40,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:40,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:40,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:30:40,977 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:40,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:40,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2108983646, now seen corresponding path program 4 times [2024-06-27 20:30:40,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:40,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950250313] [2024-06-27 20:30:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:41,647 INFO 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 20:30:41,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:41,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950250313] [2024-06-27 20:30:41,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950250313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:41,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:41,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:41,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451315232] [2024-06-27 20:30:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:41,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:41,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:41,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:41,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:41,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:41,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 179 transitions, 1892 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:41,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:41,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:41,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:41,977 INFO L124 PetriNetUnfolderBase]: 503/903 cut-off events. [2024-06-27 20:30:41,978 INFO L125 PetriNetUnfolderBase]: For 78783/78783 co-relation queries the response was YES. [2024-06-27 20:30:41,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6678 conditions, 903 events. 503/903 cut-off events. For 78783/78783 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4327 event pairs, 89 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6589. Up to 697 conditions per place. [2024-06-27 20:30:41,987 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 69 changer transitions 0/198 dead transitions. [2024-06-27 20:30:41,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 198 transitions, 2336 flow [2024-06-27 20:30:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:30:41,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:30:41,997 INFO L175 Difference]: Start difference. First operand has 197 places, 179 transitions, 1892 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:30:41,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 198 transitions, 2336 flow [2024-06-27 20:30:42,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 198 transitions, 2247 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:42,156 INFO L231 Difference]: Finished difference. Result has 201 places, 180 transitions, 1957 flow [2024-06-27 20:30:42,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1957, PETRI_PLACES=201, PETRI_TRANSITIONS=180} [2024-06-27 20:30:42,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-27 20:30:42,157 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 180 transitions, 1957 flow [2024-06-27 20:30:42,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:42,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:42,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:42,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:30:42,157 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:42,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash 583108744, now seen corresponding path program 5 times [2024-06-27 20:30:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529014081] [2024-06-27 20:30:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:42,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529014081] [2024-06-27 20:30:42,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529014081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:42,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:42,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:42,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100904672] [2024-06-27 20:30:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:42,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:42,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:43,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:43,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 180 transitions, 1957 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:43,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:43,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:43,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:43,369 INFO L124 PetriNetUnfolderBase]: 510/916 cut-off events. [2024-06-27 20:30:43,370 INFO L125 PetriNetUnfolderBase]: For 81596/81596 co-relation queries the response was YES. [2024-06-27 20:30:43,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 916 events. 510/916 cut-off events. For 81596/81596 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4413 event pairs, 89 based on Foata normal form. 2/916 useless extension candidates. Maximal degree in co-relation 6744. Up to 800 conditions per place. [2024-06-27 20:30:43,376 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 155 selfloop transitions, 40 changer transitions 0/197 dead transitions. [2024-06-27 20:30:43,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 197 transitions, 2416 flow [2024-06-27 20:30:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:30:43,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 20:30:43,377 INFO L175 Difference]: Start difference. First operand has 201 places, 180 transitions, 1957 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:30:43,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 197 transitions, 2416 flow [2024-06-27 20:30:43,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 2276 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:43,552 INFO L231 Difference]: Finished difference. Result has 205 places, 183 transitions, 1947 flow [2024-06-27 20:30:43,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1947, PETRI_PLACES=205, PETRI_TRANSITIONS=183} [2024-06-27 20:30:43,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-27 20:30:43,552 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 183 transitions, 1947 flow [2024-06-27 20:30:43,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:43,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:43,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:43,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:30:43,553 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:43,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:43,554 INFO L85 PathProgramCache]: Analyzing trace with hash 582935764, now seen corresponding path program 6 times [2024-06-27 20:30:43,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:43,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153853342] [2024-06-27 20:30:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:43,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:44,350 INFO 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 20:30:44,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:44,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153853342] [2024-06-27 20:30:44,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153853342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:44,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:44,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423775260] [2024-06-27 20:30:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:44,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:44,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:44,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 183 transitions, 1947 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:44,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:44,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:44,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:44,720 INFO L124 PetriNetUnfolderBase]: 517/929 cut-off events. [2024-06-27 20:30:44,720 INFO L125 PetriNetUnfolderBase]: For 84117/84117 co-relation queries the response was YES. [2024-06-27 20:30:44,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6899 conditions, 929 events. 517/929 cut-off events. For 84117/84117 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4512 event pairs, 91 based on Foata normal form. 2/929 useless extension candidates. Maximal degree in co-relation 6807. Up to 807 conditions per place. [2024-06-27 20:30:44,727 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 155 selfloop transitions, 43 changer transitions 0/200 dead transitions. [2024-06-27 20:30:44,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 200 transitions, 2414 flow [2024-06-27 20:30:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 20:30:44,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 20:30:44,729 INFO L175 Difference]: Start difference. First operand has 205 places, 183 transitions, 1947 flow. Second operand 10 states and 119 transitions. [2024-06-27 20:30:44,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 200 transitions, 2414 flow [2024-06-27 20:30:44,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 200 transitions, 2355 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:44,865 INFO L231 Difference]: Finished difference. Result has 209 places, 186 transitions, 2026 flow [2024-06-27 20:30:44,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2026, PETRI_PLACES=209, PETRI_TRANSITIONS=186} [2024-06-27 20:30:44,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-27 20:30:44,866 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 186 transitions, 2026 flow [2024-06-27 20:30:44,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:44,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:44,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:44,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:30:44,870 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:44,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash -290809566, now seen corresponding path program 7 times [2024-06-27 20:30:44,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:44,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010924070] [2024-06-27 20:30:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:45,614 INFO 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 20:30:45,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:45,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010924070] [2024-06-27 20:30:45,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010924070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:45,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:45,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:45,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568209834] [2024-06-27 20:30:45,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:45,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:45,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:45,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:45,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 186 transitions, 2026 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:45,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:45,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:45,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:45,993 INFO L124 PetriNetUnfolderBase]: 525/945 cut-off events. [2024-06-27 20:30:45,993 INFO L125 PetriNetUnfolderBase]: For 86924/86924 co-relation queries the response was YES. [2024-06-27 20:30:45,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7025 conditions, 945 events. 525/945 cut-off events. For 86924/86924 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4638 event pairs, 91 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 6932. Up to 803 conditions per place. [2024-06-27 20:30:46,000 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 156 selfloop transitions, 45 changer transitions 0/203 dead transitions. [2024-06-27 20:30:46,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 203 transitions, 2482 flow [2024-06-27 20:30:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:30:46,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:30:46,002 INFO L175 Difference]: Start difference. First operand has 209 places, 186 transitions, 2026 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:30:46,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 203 transitions, 2482 flow [2024-06-27 20:30:46,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 203 transitions, 2389 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:46,159 INFO L231 Difference]: Finished difference. Result has 213 places, 188 transitions, 2057 flow [2024-06-27 20:30:46,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2057, PETRI_PLACES=213, PETRI_TRANSITIONS=188} [2024-06-27 20:30:46,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-27 20:30:46,159 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 188 transitions, 2057 flow [2024-06-27 20:30:46,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:46,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:46,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:46,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:30:46,160 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:46,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 578462464, now seen corresponding path program 8 times [2024-06-27 20:30:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:46,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199427536] [2024-06-27 20:30:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:46,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:46,903 INFO 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 20:30:46,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:46,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199427536] [2024-06-27 20:30:46,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199427536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:46,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:46,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:46,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238737390] [2024-06-27 20:30:46,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:46,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:46,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 188 transitions, 2057 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:46,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:46,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:46,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:47,269 INFO L124 PetriNetUnfolderBase]: 529/953 cut-off events. [2024-06-27 20:30:47,269 INFO L125 PetriNetUnfolderBase]: For 89781/89781 co-relation queries the response was YES. [2024-06-27 20:30:47,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7135 conditions, 953 events. 529/953 cut-off events. For 89781/89781 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4678 event pairs, 95 based on Foata normal form. 2/953 useless extension candidates. Maximal degree in co-relation 7040. Up to 805 conditions per place. [2024-06-27 20:30:47,277 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 155 selfloop transitions, 48 changer transitions 0/205 dead transitions. [2024-06-27 20:30:47,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 205 transitions, 2647 flow [2024-06-27 20:30:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:30:47,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:30:47,278 INFO L175 Difference]: Start difference. First operand has 213 places, 188 transitions, 2057 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:30:47,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 205 transitions, 2647 flow [2024-06-27 20:30:47,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 205 transitions, 2555 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:47,459 INFO L231 Difference]: Finished difference. Result has 216 places, 189 transitions, 2083 flow [2024-06-27 20:30:47,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2083, PETRI_PLACES=216, PETRI_TRANSITIONS=189} [2024-06-27 20:30:47,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-27 20:30:47,459 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 189 transitions, 2083 flow [2024-06-27 20:30:47,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:47,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:47,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:47,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:30:47,460 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:47,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 578467114, now seen corresponding path program 9 times [2024-06-27 20:30:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:47,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691365738] [2024-06-27 20:30:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:47,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:48,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691365738] [2024-06-27 20:30:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691365738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:48,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:48,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112784471] [2024-06-27 20:30:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:48,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:48,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 189 transitions, 2083 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:48,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:48,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:48,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:48,676 INFO L124 PetriNetUnfolderBase]: 526/948 cut-off events. [2024-06-27 20:30:48,676 INFO L125 PetriNetUnfolderBase]: For 88208/88208 co-relation queries the response was YES. [2024-06-27 20:30:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7014 conditions, 948 events. 526/948 cut-off events. For 88208/88208 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4655 event pairs, 96 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6918. Up to 817 conditions per place. [2024-06-27 20:30:48,684 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 47 changer transitions 0/203 dead transitions. [2024-06-27 20:30:48,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 203 transitions, 2517 flow [2024-06-27 20:30:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:48,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:30:48,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:30:48,686 INFO L175 Difference]: Start difference. First operand has 216 places, 189 transitions, 2083 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:30:48,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 203 transitions, 2517 flow [2024-06-27 20:30:48,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 203 transitions, 2337 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 20:30:48,854 INFO L231 Difference]: Finished difference. Result has 216 places, 189 transitions, 2001 flow [2024-06-27 20:30:48,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=216, PETRI_TRANSITIONS=189} [2024-06-27 20:30:48,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-27 20:30:48,854 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 189 transitions, 2001 flow [2024-06-27 20:30:48,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:48,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:48,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:48,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:30:48,855 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:48,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:48,855 INFO L85 PathProgramCache]: Analyzing trace with hash -761727326, now seen corresponding path program 10 times [2024-06-27 20:30:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:48,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255501578] [2024-06-27 20:30:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:49,590 INFO 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 20:30:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255501578] [2024-06-27 20:30:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255501578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:49,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:49,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120292109] [2024-06-27 20:30:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:49,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:49,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 189 transitions, 2001 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:49,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:49,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:49,976 INFO L124 PetriNetUnfolderBase]: 530/956 cut-off events. [2024-06-27 20:30:49,976 INFO L125 PetriNetUnfolderBase]: For 90448/90448 co-relation queries the response was YES. [2024-06-27 20:30:49,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 956 events. 530/956 cut-off events. For 90448/90448 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4709 event pairs, 74 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6877. Up to 688 conditions per place. [2024-06-27 20:30:49,986 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 139 selfloop transitions, 72 changer transitions 0/213 dead transitions. [2024-06-27 20:30:49,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 213 transitions, 2618 flow [2024-06-27 20:30:49,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 20:30:49,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 20:30:49,989 INFO L175 Difference]: Start difference. First operand has 216 places, 189 transitions, 2001 flow. Second operand 10 states and 130 transitions. [2024-06-27 20:30:49,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 213 transitions, 2618 flow [2024-06-27 20:30:50,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 213 transitions, 2503 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:30:50,162 INFO L231 Difference]: Finished difference. Result has 216 places, 190 transitions, 2041 flow [2024-06-27 20:30:50,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2041, PETRI_PLACES=216, PETRI_TRANSITIONS=190} [2024-06-27 20:30:50,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-27 20:30:50,162 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 190 transitions, 2041 flow [2024-06-27 20:30:50,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:50,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:50,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:50,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:30:50,163 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:50,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash -761612006, now seen corresponding path program 11 times [2024-06-27 20:30:50,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:50,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363930527] [2024-06-27 20:30:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:50,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:50,831 INFO 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 20:30:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:50,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363930527] [2024-06-27 20:30:50,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363930527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:50,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:50,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:50,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397706399] [2024-06-27 20:30:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:50,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:50,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 190 transitions, 2041 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:50,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:50,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:50,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:51,186 INFO L124 PetriNetUnfolderBase]: 541/977 cut-off events. [2024-06-27 20:30:51,186 INFO L125 PetriNetUnfolderBase]: For 97875/97875 co-relation queries the response was YES. [2024-06-27 20:30:51,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7273 conditions, 977 events. 541/977 cut-off events. For 97875/97875 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4872 event pairs, 93 based on Foata normal form. 2/977 useless extension candidates. Maximal degree in co-relation 7179. Up to 793 conditions per place. [2024-06-27 20:30:51,193 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 71 changer transitions 0/214 dead transitions. [2024-06-27 20:30:51,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 214 transitions, 2671 flow [2024-06-27 20:30:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 20:30:51,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 20:30:51,195 INFO L175 Difference]: Start difference. First operand has 216 places, 190 transitions, 2041 flow. Second operand 10 states and 130 transitions. [2024-06-27 20:30:51,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 214 transitions, 2671 flow [2024-06-27 20:30:51,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 214 transitions, 2439 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:30:51,416 INFO L231 Difference]: Finished difference. Result has 217 places, 192 transitions, 1975 flow [2024-06-27 20:30:51,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1975, PETRI_PLACES=217, PETRI_TRANSITIONS=192} [2024-06-27 20:30:51,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-27 20:30:51,417 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 192 transitions, 1975 flow [2024-06-27 20:30:51,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:51,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:51,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:51,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:30:51,418 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:51,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash -761607356, now seen corresponding path program 12 times [2024-06-27 20:30:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:51,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595501416] [2024-06-27 20:30:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:52,266 INFO 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 20:30:52,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595501416] [2024-06-27 20:30:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595501416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:52,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:52,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321126933] [2024-06-27 20:30:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:52,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:52,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:52,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:52,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 192 transitions, 1975 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:52,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:52,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:52,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:52,834 INFO L124 PetriNetUnfolderBase]: 562/1024 cut-off events. [2024-06-27 20:30:52,834 INFO L125 PetriNetUnfolderBase]: For 129098/129098 co-relation queries the response was YES. [2024-06-27 20:30:52,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7112 conditions, 1024 events. 562/1024 cut-off events. For 129098/129098 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5171 event pairs, 84 based on Foata normal form. 16/1038 useless extension candidates. Maximal degree in co-relation 7018. Up to 665 conditions per place. [2024-06-27 20:30:52,842 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 91 changer transitions 12/226 dead transitions. [2024-06-27 20:30:52,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 226 transitions, 2662 flow [2024-06-27 20:30:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:30:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:30:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 20:30:52,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2024-06-27 20:30:52,843 INFO L175 Difference]: Start difference. First operand has 217 places, 192 transitions, 1975 flow. Second operand 12 states and 161 transitions. [2024-06-27 20:30:52,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 226 transitions, 2662 flow [2024-06-27 20:30:53,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 226 transitions, 2563 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:53,029 INFO L231 Difference]: Finished difference. Result has 223 places, 188 transitions, 2030 flow [2024-06-27 20:30:53,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2030, PETRI_PLACES=223, PETRI_TRANSITIONS=188} [2024-06-27 20:30:53,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-27 20:30:53,029 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 188 transitions, 2030 flow [2024-06-27 20:30:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:53,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:53,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:53,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:30:53,030 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash -761607170, now seen corresponding path program 2 times [2024-06-27 20:30:53,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:53,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021022498] [2024-06-27 20:30:53,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:53,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:53,810 INFO 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 20:30:53,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:53,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021022498] [2024-06-27 20:30:53,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021022498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:53,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:53,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:53,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675628910] [2024-06-27 20:30:53,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:53,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:53,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:53,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:53,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:53,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:53,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 188 transitions, 2030 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:53,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:53,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:53,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:54,198 INFO L124 PetriNetUnfolderBase]: 534/968 cut-off events. [2024-06-27 20:30:54,198 INFO L125 PetriNetUnfolderBase]: For 98960/98960 co-relation queries the response was YES. [2024-06-27 20:30:54,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 968 events. 534/968 cut-off events. For 98960/98960 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4831 event pairs, 78 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 7047. Up to 658 conditions per place. [2024-06-27 20:30:54,206 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 131 selfloop transitions, 81 changer transitions 0/214 dead transitions. [2024-06-27 20:30:54,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 214 transitions, 2672 flow [2024-06-27 20:30:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 20:30:54,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 20:30:54,207 INFO L175 Difference]: Start difference. First operand has 223 places, 188 transitions, 2030 flow. Second operand 10 states and 135 transitions. [2024-06-27 20:30:54,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 214 transitions, 2672 flow [2024-06-27 20:30:54,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 214 transitions, 2475 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 20:30:54,393 INFO L231 Difference]: Finished difference. Result has 221 places, 190 transitions, 2022 flow [2024-06-27 20:30:54,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2022, PETRI_PLACES=221, PETRI_TRANSITIONS=190} [2024-06-27 20:30:54,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-27 20:30:54,393 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 190 transitions, 2022 flow [2024-06-27 20:30:54,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:54,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:54,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:54,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:30:54,394 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:54,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash -584469140, now seen corresponding path program 3 times [2024-06-27 20:30:54,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:54,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190474641] [2024-06-27 20:30:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:55,171 INFO 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 20:30:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:55,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190474641] [2024-06-27 20:30:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190474641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:55,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748600773] [2024-06-27 20:30:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:55,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:55,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:55,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:55,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 190 transitions, 2022 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:55,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:55,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:55,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:55,565 INFO L124 PetriNetUnfolderBase]: 546/988 cut-off events. [2024-06-27 20:30:55,565 INFO L125 PetriNetUnfolderBase]: For 102242/102242 co-relation queries the response was YES. [2024-06-27 20:30:55,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7291 conditions, 988 events. 546/988 cut-off events. For 102242/102242 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4981 event pairs, 82 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 7194. Up to 793 conditions per place. [2024-06-27 20:30:55,572 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 51 changer transitions 0/212 dead transitions. [2024-06-27 20:30:55,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 212 transitions, 2540 flow [2024-06-27 20:30:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 20:30:55,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 20:30:55,574 INFO L175 Difference]: Start difference. First operand has 221 places, 190 transitions, 2022 flow. Second operand 10 states and 125 transitions. [2024-06-27 20:30:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 212 transitions, 2540 flow [2024-06-27 20:30:55,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 212 transitions, 2356 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:55,777 INFO L231 Difference]: Finished difference. Result has 223 places, 194 transitions, 2007 flow [2024-06-27 20:30:55,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2007, PETRI_PLACES=223, PETRI_TRANSITIONS=194} [2024-06-27 20:30:55,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-27 20:30:55,777 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 194 transitions, 2007 flow [2024-06-27 20:30:55,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:55,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:55,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:55,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:30:55,778 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:55,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:55,778 INFO L85 PathProgramCache]: Analyzing trace with hash -584475650, now seen corresponding path program 4 times [2024-06-27 20:30:55,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:55,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118126248] [2024-06-27 20:30:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:55,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:56,581 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 20:30:56,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:56,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118126248] [2024-06-27 20:30:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118126248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:56,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:56,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513892739] [2024-06-27 20:30:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:56,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:56,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:56,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 194 transitions, 2007 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:56,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:56,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:56,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:57,065 INFO L124 PetriNetUnfolderBase]: 552/998 cut-off events. [2024-06-27 20:30:57,065 INFO L125 PetriNetUnfolderBase]: For 104474/104474 co-relation queries the response was YES. [2024-06-27 20:30:57,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 998 events. 552/998 cut-off events. For 104474/104474 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4988 event pairs, 71 based on Foata normal form. 2/998 useless extension candidates. Maximal degree in co-relation 7178. Up to 761 conditions per place. [2024-06-27 20:30:57,073 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 60 changer transitions 0/216 dead transitions. [2024-06-27 20:30:57,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 216 transitions, 2645 flow [2024-06-27 20:30:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 20:30:57,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 20:30:57,082 INFO L175 Difference]: Start difference. First operand has 223 places, 194 transitions, 2007 flow. Second operand 10 states and 129 transitions. [2024-06-27 20:30:57,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 216 transitions, 2645 flow [2024-06-27 20:30:57,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 216 transitions, 2530 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:57,299 INFO L231 Difference]: Finished difference. Result has 226 places, 196 transitions, 2043 flow [2024-06-27 20:30:57,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2043, PETRI_PLACES=226, PETRI_TRANSITIONS=196} [2024-06-27 20:30:57,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-27 20:30:57,300 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 196 transitions, 2043 flow [2024-06-27 20:30:57,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:57,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:57,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:57,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:30:57,300 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:57,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash -291226396, now seen corresponding path program 5 times [2024-06-27 20:30:57,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:57,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258439635] [2024-06-27 20:30:57,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:57,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:58,125 INFO 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 20:30:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258439635] [2024-06-27 20:30:58,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258439635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:58,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:58,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133296445] [2024-06-27 20:30:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:58,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:58,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 196 transitions, 2043 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:58,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:58,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:58,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:58,545 INFO L124 PetriNetUnfolderBase]: 558/1008 cut-off events. [2024-06-27 20:30:58,545 INFO L125 PetriNetUnfolderBase]: For 107462/107462 co-relation queries the response was YES. [2024-06-27 20:30:58,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7387 conditions, 1008 events. 558/1008 cut-off events. For 107462/107462 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5081 event pairs, 67 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 7288. Up to 790 conditions per place. [2024-06-27 20:30:58,554 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 63 changer transitions 0/218 dead transitions. [2024-06-27 20:30:58,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 218 transitions, 2547 flow [2024-06-27 20:30:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 20:30:58,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 20:30:58,556 INFO L175 Difference]: Start difference. First operand has 226 places, 196 transitions, 2043 flow. Second operand 10 states and 127 transitions. [2024-06-27 20:30:58,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 218 transitions, 2547 flow [2024-06-27 20:30:58,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 218 transitions, 2411 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:58,773 INFO L231 Difference]: Finished difference. Result has 228 places, 198 transitions, 2068 flow [2024-06-27 20:30:58,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2068, PETRI_PLACES=228, PETRI_TRANSITIONS=198} [2024-06-27 20:30:58,788 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-27 20:30:58,788 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 198 transitions, 2068 flow [2024-06-27 20:30:58,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:58,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:58,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:58,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:30:58,789 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash -118736692, now seen corresponding path program 13 times [2024-06-27 20:30:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300185514] [2024-06-27 20:30:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300185514] [2024-06-27 20:30:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300185514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:59,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686577746] [2024-06-27 20:30:59,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:59,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:59,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:59,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 198 transitions, 2068 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:59,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:59,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:59,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:00,107 INFO L124 PetriNetUnfolderBase]: 562/1016 cut-off events. [2024-06-27 20:31:00,107 INFO L125 PetriNetUnfolderBase]: For 110338/110338 co-relation queries the response was YES. [2024-06-27 20:31:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7447 conditions, 1016 events. 562/1016 cut-off events. For 110338/110338 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5147 event pairs, 96 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 7347. Up to 900 conditions per place. [2024-06-27 20:31:00,116 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 170 selfloop transitions, 41 changer transitions 0/213 dead transitions. [2024-06-27 20:31:00,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 213 transitions, 2531 flow [2024-06-27 20:31:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 20:31:00,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 20:31:00,118 INFO L175 Difference]: Start difference. First operand has 228 places, 198 transitions, 2068 flow. Second operand 10 states and 117 transitions. [2024-06-27 20:31:00,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 213 transitions, 2531 flow [2024-06-27 20:31:00,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 213 transitions, 2390 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:00,325 INFO L231 Difference]: Finished difference. Result has 230 places, 199 transitions, 2024 flow [2024-06-27 20:31:00,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2024, PETRI_PLACES=230, PETRI_TRANSITIONS=199} [2024-06-27 20:31:00,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-27 20:31:00,326 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 199 transitions, 2024 flow [2024-06-27 20:31:00,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:00,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:00,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:00,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:31:00,326 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:00,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash -124992616, now seen corresponding path program 6 times [2024-06-27 20:31:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:00,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962487478] [2024-06-27 20:31:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:01,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:01,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962487478] [2024-06-27 20:31:01,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962487478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:01,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:01,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125183081] [2024-06-27 20:31:01,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:01,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:01,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:01,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 199 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:01,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:01,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:01,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:01,530 INFO L124 PetriNetUnfolderBase]: 568/1026 cut-off events. [2024-06-27 20:31:01,531 INFO L125 PetriNetUnfolderBase]: For 113189/113189 co-relation queries the response was YES. [2024-06-27 20:31:01,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7459 conditions, 1026 events. 568/1026 cut-off events. For 113189/113189 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5197 event pairs, 69 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 7358. Up to 800 conditions per place. [2024-06-27 20:31:01,539 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 57 changer transitions 0/221 dead transitions. [2024-06-27 20:31:01,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 221 transitions, 2536 flow [2024-06-27 20:31:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 20:31:01,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-27 20:31:01,540 INFO L175 Difference]: Start difference. First operand has 230 places, 199 transitions, 2024 flow. Second operand 10 states and 131 transitions. [2024-06-27 20:31:01,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 221 transitions, 2536 flow [2024-06-27 20:31:01,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 221 transitions, 2450 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:01,772 INFO L231 Difference]: Finished difference. Result has 232 places, 201 transitions, 2091 flow [2024-06-27 20:31:01,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2091, PETRI_PLACES=232, PETRI_TRANSITIONS=201} [2024-06-27 20:31:01,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 20:31:01,773 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 201 transitions, 2091 flow [2024-06-27 20:31:01,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:01,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:01,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:01,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:31:01,774 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:01,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:01,774 INFO L85 PathProgramCache]: Analyzing trace with hash 212856974, now seen corresponding path program 7 times [2024-06-27 20:31:01,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:01,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765698084] [2024-06-27 20:31:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:01,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:02,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765698084] [2024-06-27 20:31:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765698084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:02,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:02,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439978171] [2024-06-27 20:31:02,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:02,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:02,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 201 transitions, 2091 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:02,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:02,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:02,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:02,909 INFO L124 PetriNetUnfolderBase]: 574/1036 cut-off events. [2024-06-27 20:31:02,909 INFO L125 PetriNetUnfolderBase]: For 116519/116519 co-relation queries the response was YES. [2024-06-27 20:31:02,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 1036 events. 574/1036 cut-off events. For 116519/116519 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5253 event pairs, 67 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 7519. Up to 806 conditions per place. [2024-06-27 20:31:02,919 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 68 changer transitions 0/225 dead transitions. [2024-06-27 20:31:02,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 225 transitions, 2621 flow [2024-06-27 20:31:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 20:31:02,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 20:31:02,920 INFO L175 Difference]: Start difference. First operand has 232 places, 201 transitions, 2091 flow. Second operand 11 states and 139 transitions. [2024-06-27 20:31:02,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 225 transitions, 2621 flow [2024-06-27 20:31:03,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 225 transitions, 2488 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:03,149 INFO L231 Difference]: Finished difference. Result has 235 places, 203 transitions, 2137 flow [2024-06-27 20:31:03,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2137, PETRI_PLACES=235, PETRI_TRANSITIONS=203} [2024-06-27 20:31:03,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-27 20:31:03,150 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 203 transitions, 2137 flow [2024-06-27 20:31:03,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:03,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:03,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:03,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:31:03,150 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:03,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:03,151 INFO L85 PathProgramCache]: Analyzing trace with hash 212852138, now seen corresponding path program 14 times [2024-06-27 20:31:03,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:03,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789644033] [2024-06-27 20:31:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:03,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:03,838 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 20:31:03,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:03,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789644033] [2024-06-27 20:31:03,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789644033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:03,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:03,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812821025] [2024-06-27 20:31:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:03,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:03,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:03,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:03,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 203 transitions, 2137 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:03,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:03,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:03,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:04,231 INFO L124 PetriNetUnfolderBase]: 578/1044 cut-off events. [2024-06-27 20:31:04,231 INFO L125 PetriNetUnfolderBase]: For 119517/119517 co-relation queries the response was YES. [2024-06-27 20:31:04,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7706 conditions, 1044 events. 578/1044 cut-off events. For 119517/119517 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5315 event pairs, 96 based on Foata normal form. 2/1044 useless extension candidates. Maximal degree in co-relation 7603. Up to 906 conditions per place. [2024-06-27 20:31:04,239 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 49 changer transitions 0/222 dead transitions. [2024-06-27 20:31:04,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 222 transitions, 2630 flow [2024-06-27 20:31:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:31:04,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:31:04,241 INFO L175 Difference]: Start difference. First operand has 235 places, 203 transitions, 2137 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:31:04,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 222 transitions, 2630 flow [2024-06-27 20:31:04,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 222 transitions, 2471 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:04,458 INFO L231 Difference]: Finished difference. Result has 236 places, 204 transitions, 2093 flow [2024-06-27 20:31:04,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2093, PETRI_PLACES=236, PETRI_TRANSITIONS=204} [2024-06-27 20:31:04,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-27 20:31:04,459 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 204 transitions, 2093 flow [2024-06-27 20:31:04,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:04,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:04,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:04,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:31:04,460 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:04,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash -118490428, now seen corresponding path program 1 times [2024-06-27 20:31:04,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:04,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112396920] [2024-06-27 20:31:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:04,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:05,467 INFO 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 20:31:05,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:05,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112396920] [2024-06-27 20:31:05,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112396920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821047299] [2024-06-27 20:31:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:05,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:05,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:05,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:05,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:05,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 204 transitions, 2093 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:05,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:05,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:05,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:05,823 INFO L124 PetriNetUnfolderBase]: 572/1034 cut-off events. [2024-06-27 20:31:05,823 INFO L125 PetriNetUnfolderBase]: For 116734/116734 co-relation queries the response was YES. [2024-06-27 20:31:05,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7309 conditions, 1034 events. 572/1034 cut-off events. For 116734/116734 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5281 event pairs, 82 based on Foata normal form. 4/1036 useless extension candidates. Maximal degree in co-relation 7205. Up to 835 conditions per place. [2024-06-27 20:31:05,832 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 48 changer transitions 0/221 dead transitions. [2024-06-27 20:31:05,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 221 transitions, 2573 flow [2024-06-27 20:31:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:31:05,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:31:05,833 INFO L175 Difference]: Start difference. First operand has 236 places, 204 transitions, 2093 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:31:05,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 221 transitions, 2573 flow [2024-06-27 20:31:06,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 221 transitions, 2472 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:06,053 INFO L231 Difference]: Finished difference. Result has 239 places, 205 transitions, 2101 flow [2024-06-27 20:31:06,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2101, PETRI_PLACES=239, PETRI_TRANSITIONS=205} [2024-06-27 20:31:06,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-27 20:31:06,054 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 205 transitions, 2101 flow [2024-06-27 20:31:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:06,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:06,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:31:06,055 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:06,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -590731946, now seen corresponding path program 15 times [2024-06-27 20:31:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225826707] [2024-06-27 20:31:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225826707] [2024-06-27 20:31:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225826707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:06,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:06,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:06,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632504341] [2024-06-27 20:31:06,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:06,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:06,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:06,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 205 transitions, 2101 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:06,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:06,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:06,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:07,335 INFO L124 PetriNetUnfolderBase]: 576/1042 cut-off events. [2024-06-27 20:31:07,335 INFO L125 PetriNetUnfolderBase]: For 113059/113059 co-relation queries the response was YES. [2024-06-27 20:31:07,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 1042 events. 576/1042 cut-off events. For 113059/113059 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5322 event pairs, 98 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7294. Up to 926 conditions per place. [2024-06-27 20:31:07,342 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 40 changer transitions 0/220 dead transitions. [2024-06-27 20:31:07,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 220 transitions, 2582 flow [2024-06-27 20:31:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:31:07,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 20:31:07,343 INFO L175 Difference]: Start difference. First operand has 239 places, 205 transitions, 2101 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:31:07,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 220 transitions, 2582 flow [2024-06-27 20:31:07,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 220 transitions, 2455 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:07,537 INFO L231 Difference]: Finished difference. Result has 240 places, 206 transitions, 2073 flow [2024-06-27 20:31:07,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2073, PETRI_PLACES=240, PETRI_TRANSITIONS=206} [2024-06-27 20:31:07,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 20:31:07,538 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 206 transitions, 2073 flow [2024-06-27 20:31:07,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:07,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:07,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:07,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:31:07,538 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:07,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash -590909576, now seen corresponding path program 16 times [2024-06-27 20:31:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495449219] [2024-06-27 20:31:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:08,350 INFO 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 20:31:08,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495449219] [2024-06-27 20:31:08,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495449219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:08,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:08,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372126595] [2024-06-27 20:31:08,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:08,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:08,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:08,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 206 transitions, 2073 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:08,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:08,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:08,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:08,676 INFO L124 PetriNetUnfolderBase]: 587/1063 cut-off events. [2024-06-27 20:31:08,676 INFO L125 PetriNetUnfolderBase]: For 122364/122364 co-relation queries the response was YES. [2024-06-27 20:31:08,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7620 conditions, 1063 events. 587/1063 cut-off events. For 122364/122364 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5464 event pairs, 95 based on Foata normal form. 2/1063 useless extension candidates. Maximal degree in co-relation 7514. Up to 909 conditions per place. [2024-06-27 20:31:08,685 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 48 changer transitions 0/224 dead transitions. [2024-06-27 20:31:08,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 224 transitions, 2743 flow [2024-06-27 20:31:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:31:08,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:31:08,686 INFO L175 Difference]: Start difference. First operand has 240 places, 206 transitions, 2073 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:31:08,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 224 transitions, 2743 flow [2024-06-27 20:31:08,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 224 transitions, 2649 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:31:08,892 INFO L231 Difference]: Finished difference. Result has 244 places, 208 transitions, 2111 flow [2024-06-27 20:31:08,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2111, PETRI_PLACES=244, PETRI_TRANSITIONS=208} [2024-06-27 20:31:08,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-27 20:31:08,898 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 208 transitions, 2111 flow [2024-06-27 20:31:08,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:08,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:08,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:08,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:31:08,899 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:08,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash -590904740, now seen corresponding path program 8 times [2024-06-27 20:31:08,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:08,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707614984] [2024-06-27 20:31:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:08,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707614984] [2024-06-27 20:31:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707614984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:09,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591154498] [2024-06-27 20:31:09,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:09,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:09,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:09,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 208 transitions, 2111 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:09,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:09,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:09,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:10,181 INFO L124 PetriNetUnfolderBase]: 593/1073 cut-off events. [2024-06-27 20:31:10,182 INFO L125 PetriNetUnfolderBase]: For 125727/125727 co-relation queries the response was YES. [2024-06-27 20:31:10,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7734 conditions, 1073 events. 593/1073 cut-off events. For 125727/125727 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5514 event pairs, 72 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 7627. Up to 807 conditions per place. [2024-06-27 20:31:10,192 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 69 changer transitions 0/231 dead transitions. [2024-06-27 20:31:10,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 231 transitions, 2815 flow [2024-06-27 20:31:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 20:31:10,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 20:31:10,193 INFO L175 Difference]: Start difference. First operand has 244 places, 208 transitions, 2111 flow. Second operand 11 states and 139 transitions. [2024-06-27 20:31:10,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 231 transitions, 2815 flow [2024-06-27 20:31:10,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 231 transitions, 2719 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 20:31:10,414 INFO L231 Difference]: Finished difference. Result has 249 places, 210 transitions, 2200 flow [2024-06-27 20:31:10,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2200, PETRI_PLACES=249, PETRI_TRANSITIONS=210} [2024-06-27 20:31:10,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 20:31:10,414 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 210 transitions, 2200 flow [2024-06-27 20:31:10,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:10,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:10,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:31:10,415 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:10,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash -125165782, now seen corresponding path program 17 times [2024-06-27 20:31:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52174189] [2024-06-27 20:31:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:11,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:11,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52174189] [2024-06-27 20:31:11,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52174189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:11,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:11,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:11,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159160572] [2024-06-27 20:31:11,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:11,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:11,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:11,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:11,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:11,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 210 transitions, 2200 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:11,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:11,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:11,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:11,565 INFO L124 PetriNetUnfolderBase]: 590/1068 cut-off events. [2024-06-27 20:31:11,565 INFO L125 PetriNetUnfolderBase]: For 122265/122265 co-relation queries the response was YES. [2024-06-27 20:31:11,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7702 conditions, 1068 events. 590/1068 cut-off events. For 122265/122265 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5492 event pairs, 98 based on Foata normal form. 2/1068 useless extension candidates. Maximal degree in co-relation 7593. Up to 943 conditions per place. [2024-06-27 20:31:11,575 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 45 changer transitions 0/224 dead transitions. [2024-06-27 20:31:11,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 224 transitions, 2676 flow [2024-06-27 20:31:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 20:31:11,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 20:31:11,586 INFO L175 Difference]: Start difference. First operand has 249 places, 210 transitions, 2200 flow. Second operand 10 states and 119 transitions. [2024-06-27 20:31:11,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 224 transitions, 2676 flow [2024-06-27 20:31:11,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 224 transitions, 2485 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:11,883 INFO L231 Difference]: Finished difference. Result has 249 places, 210 transitions, 2103 flow [2024-06-27 20:31:11,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2103, PETRI_PLACES=249, PETRI_TRANSITIONS=210} [2024-06-27 20:31:11,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 20:31:11,884 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 210 transitions, 2103 flow [2024-06-27 20:31:11,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:11,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:11,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:11,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:31:11,885 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:11,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash -118499356, now seen corresponding path program 9 times [2024-06-27 20:31:11,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:11,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821884893] [2024-06-27 20:31:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821884893] [2024-06-27 20:31:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821884893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:12,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810409266] [2024-06-27 20:31:12,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:12,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:12,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:12,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 210 transitions, 2103 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:12,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:12,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:12,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:13,194 INFO L124 PetriNetUnfolderBase]: 586/1062 cut-off events. [2024-06-27 20:31:13,195 INFO L125 PetriNetUnfolderBase]: For 118208/118208 co-relation queries the response was YES. [2024-06-27 20:31:13,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7387 conditions, 1062 events. 586/1062 cut-off events. For 118208/118208 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5495 event pairs, 83 based on Foata normal form. 2/1062 useless extension candidates. Maximal degree in co-relation 7277. Up to 867 conditions per place. [2024-06-27 20:31:13,204 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 52 changer transitions 0/227 dead transitions. [2024-06-27 20:31:13,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 227 transitions, 2591 flow [2024-06-27 20:31:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:31:13,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:31:13,205 INFO L175 Difference]: Start difference. First operand has 249 places, 210 transitions, 2103 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:31:13,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 227 transitions, 2591 flow [2024-06-27 20:31:13,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 227 transitions, 2479 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:13,473 INFO L231 Difference]: Finished difference. Result has 250 places, 210 transitions, 2100 flow [2024-06-27 20:31:13,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2100, PETRI_PLACES=250, PETRI_TRANSITIONS=210} [2024-06-27 20:31:13,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 20:31:13,474 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 210 transitions, 2100 flow [2024-06-27 20:31:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:13,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:13,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:13,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:31:13,475 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:13,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash -217841374, now seen corresponding path program 2 times [2024-06-27 20:31:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410062494] [2024-06-27 20:31:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:13,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:14,350 INFO 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 20:31:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:14,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410062494] [2024-06-27 20:31:14,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410062494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:14,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:14,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933075500] [2024-06-27 20:31:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:14,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:14,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:14,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 210 transitions, 2100 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:14,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:14,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:14,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:14,817 INFO L124 PetriNetUnfolderBase]: 593/1075 cut-off events. [2024-06-27 20:31:14,818 INFO L125 PetriNetUnfolderBase]: For 120928/120928 co-relation queries the response was YES. [2024-06-27 20:31:14,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7490 conditions, 1075 events. 593/1075 cut-off events. For 120928/120928 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5546 event pairs, 88 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 7379. Up to 1007 conditions per place. [2024-06-27 20:31:14,855 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 199 selfloop transitions, 27 changer transitions 0/228 dead transitions. [2024-06-27 20:31:14,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 228 transitions, 2614 flow [2024-06-27 20:31:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:31:14,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:31:14,857 INFO L175 Difference]: Start difference. First operand has 250 places, 210 transitions, 2100 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:31:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 228 transitions, 2614 flow [2024-06-27 20:31:15,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 228 transitions, 2501 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:15,067 INFO L231 Difference]: Finished difference. Result has 254 places, 215 transitions, 2110 flow [2024-06-27 20:31:15,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2110, PETRI_PLACES=254, PETRI_TRANSITIONS=215} [2024-06-27 20:31:15,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-27 20:31:15,068 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 215 transitions, 2110 flow [2024-06-27 20:31:15,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:15,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:15,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:15,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:31:15,068 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:15,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:15,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1756933954, now seen corresponding path program 10 times [2024-06-27 20:31:15,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:15,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523109430] [2024-06-27 20:31:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:15,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:15,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:15,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523109430] [2024-06-27 20:31:15,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523109430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:15,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:15,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:15,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825630722] [2024-06-27 20:31:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:15,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:15,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:15,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:16,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:16,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 215 transitions, 2110 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:16,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:16,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:16,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:16,417 INFO L124 PetriNetUnfolderBase]: 589/1069 cut-off events. [2024-06-27 20:31:16,417 INFO L125 PetriNetUnfolderBase]: For 116594/116594 co-relation queries the response was YES. [2024-06-27 20:31:16,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1069 events. 589/1069 cut-off events. For 116594/116594 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5514 event pairs, 88 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 7247. Up to 1019 conditions per place. [2024-06-27 20:31:16,427 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 22 changer transitions 0/231 dead transitions. [2024-06-27 20:31:16,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 231 transitions, 2635 flow [2024-06-27 20:31:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:31:16,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:31:16,428 INFO L175 Difference]: Start difference. First operand has 254 places, 215 transitions, 2110 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:31:16,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 231 transitions, 2635 flow [2024-06-27 20:31:16,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 231 transitions, 2514 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:16,667 INFO L231 Difference]: Finished difference. Result has 257 places, 219 transitions, 2082 flow [2024-06-27 20:31:16,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2082, PETRI_PLACES=257, PETRI_TRANSITIONS=219} [2024-06-27 20:31:16,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 20:31:16,668 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 219 transitions, 2082 flow [2024-06-27 20:31:16,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:16,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:16,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:16,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:31:16,669 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:16,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1499313040, now seen corresponding path program 3 times [2024-06-27 20:31:16,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:16,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005950501] [2024-06-27 20:31:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:17,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:17,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005950501] [2024-06-27 20:31:17,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005950501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:17,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:17,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:17,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118457542] [2024-06-27 20:31:17,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:17,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:17,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:17,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 219 transitions, 2082 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:17,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:17,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:17,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:17,884 INFO L124 PetriNetUnfolderBase]: 593/1077 cut-off events. [2024-06-27 20:31:17,885 INFO L125 PetriNetUnfolderBase]: For 119019/119019 co-relation queries the response was YES. [2024-06-27 20:31:17,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7400 conditions, 1077 events. 593/1077 cut-off events. For 119019/119019 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5569 event pairs, 85 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 7284. Up to 1033 conditions per place. [2024-06-27 20:31:17,894 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 210 selfloop transitions, 20 changer transitions 0/232 dead transitions. [2024-06-27 20:31:17,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 232 transitions, 2590 flow [2024-06-27 20:31:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:31:17,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:31:17,905 INFO L175 Difference]: Start difference. First operand has 257 places, 219 transitions, 2082 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:31:17,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 232 transitions, 2590 flow [2024-06-27 20:31:18,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 232 transitions, 2540 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:18,147 INFO L231 Difference]: Finished difference. Result has 260 places, 220 transitions, 2096 flow [2024-06-27 20:31:18,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2096, PETRI_PLACES=260, PETRI_TRANSITIONS=220} [2024-06-27 20:31:18,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-27 20:31:18,148 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 220 transitions, 2096 flow [2024-06-27 20:31:18,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:18,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:18,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:18,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:31:18,149 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:18,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1767062212, now seen corresponding path program 4 times [2024-06-27 20:31:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87976415] [2024-06-27 20:31:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87976415] [2024-06-27 20:31:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87976415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515800554] [2024-06-27 20:31:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:18,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:19,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:19,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 220 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:19,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:19,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:19,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:19,488 INFO L124 PetriNetUnfolderBase]: 597/1085 cut-off events. [2024-06-27 20:31:19,488 INFO L125 PetriNetUnfolderBase]: For 122022/122022 co-relation queries the response was YES. [2024-06-27 20:31:19,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 1085 events. 597/1085 cut-off events. For 122022/122022 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5649 event pairs, 87 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 7356. Up to 1045 conditions per place. [2024-06-27 20:31:19,500 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 211 selfloop transitions, 19 changer transitions 0/232 dead transitions. [2024-06-27 20:31:19,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 232 transitions, 2602 flow [2024-06-27 20:31:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:31:19,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:31:19,501 INFO L175 Difference]: Start difference. First operand has 260 places, 220 transitions, 2096 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:31:19,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 232 transitions, 2602 flow [2024-06-27 20:31:19,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 232 transitions, 2542 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:19,779 INFO L231 Difference]: Finished difference. Result has 262 places, 221 transitions, 2101 flow [2024-06-27 20:31:19,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2101, PETRI_PLACES=262, PETRI_TRANSITIONS=221} [2024-06-27 20:31:19,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-27 20:31:19,779 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 221 transitions, 2101 flow [2024-06-27 20:31:19,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:19,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:19,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:19,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:31:19,780 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:19,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash -437463710, now seen corresponding path program 11 times [2024-06-27 20:31:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:19,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952918405] [2024-06-27 20:31:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:20,513 INFO 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 20:31:20,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952918405] [2024-06-27 20:31:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952918405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:20,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:20,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:20,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902200533] [2024-06-27 20:31:20,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:20,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:20,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:20,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:20,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 221 transitions, 2101 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:20,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:20,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:20,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:20,920 INFO L124 PetriNetUnfolderBase]: 609/1105 cut-off events. [2024-06-27 20:31:20,921 INFO L125 PetriNetUnfolderBase]: For 124960/124960 co-relation queries the response was YES. [2024-06-27 20:31:20,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 1105 events. 609/1105 cut-off events. For 124960/124960 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5781 event pairs, 90 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 7484. Up to 1017 conditions per place. [2024-06-27 20:31:20,931 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 207 selfloop transitions, 30 changer transitions 0/239 dead transitions. [2024-06-27 20:31:20,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 239 transitions, 2671 flow [2024-06-27 20:31:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:31:20,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 20:31:20,933 INFO L175 Difference]: Start difference. First operand has 262 places, 221 transitions, 2101 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:31:20,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 239 transitions, 2671 flow [2024-06-27 20:31:21,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 239 transitions, 2618 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:21,190 INFO L231 Difference]: Finished difference. Result has 264 places, 225 transitions, 2173 flow [2024-06-27 20:31:21,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2173, PETRI_PLACES=264, PETRI_TRANSITIONS=225} [2024-06-27 20:31:21,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 20:31:21,191 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 225 transitions, 2173 flow [2024-06-27 20:31:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:21,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:21,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:31:21,192 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:21,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:21,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1729300180, now seen corresponding path program 5 times [2024-06-27 20:31:21,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:21,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624670711] [2024-06-27 20:31:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:21,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624670711] [2024-06-27 20:31:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624670711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:22,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:22,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:22,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814262665] [2024-06-27 20:31:22,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:22,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:22,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:22,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:22,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 225 transitions, 2173 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:22,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:22,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:22,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:22,727 INFO L124 PetriNetUnfolderBase]: 613/1113 cut-off events. [2024-06-27 20:31:22,728 INFO L125 PetriNetUnfolderBase]: For 127681/127681 co-relation queries the response was YES. [2024-06-27 20:31:22,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 1113 events. 613/1113 cut-off events. For 127681/127681 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5808 event pairs, 91 based on Foata normal form. 2/1113 useless extension candidates. Maximal degree in co-relation 7583. Up to 1076 conditions per place. [2024-06-27 20:31:22,738 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 219 selfloop transitions, 16 changer transitions 0/237 dead transitions. [2024-06-27 20:31:22,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 237 transitions, 2689 flow [2024-06-27 20:31:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:31:22,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:31:22,739 INFO L175 Difference]: Start difference. First operand has 264 places, 225 transitions, 2173 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:31:22,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 237 transitions, 2689 flow [2024-06-27 20:31:22,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 237 transitions, 2604 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:22,999 INFO L231 Difference]: Finished difference. Result has 267 places, 226 transitions, 2148 flow [2024-06-27 20:31:22,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=267, PETRI_TRANSITIONS=226} [2024-06-27 20:31:23,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-27 20:31:23,000 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 226 transitions, 2148 flow [2024-06-27 20:31:23,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:23,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:23,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:23,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:31:23,000 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:23,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1471843012, now seen corresponding path program 6 times [2024-06-27 20:31:23,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:23,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308640577] [2024-06-27 20:31:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:23,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:23,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308640577] [2024-06-27 20:31:23,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308640577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:23,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:23,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937778237] [2024-06-27 20:31:23,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:23,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:23,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:23,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:23,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 226 transitions, 2148 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:23,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:23,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:23,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:24,343 INFO L124 PetriNetUnfolderBase]: 610/1108 cut-off events. [2024-06-27 20:31:24,343 INFO L125 PetriNetUnfolderBase]: For 122286/122286 co-relation queries the response was YES. [2024-06-27 20:31:24,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 1108 events. 610/1108 cut-off events. For 122286/122286 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5809 event pairs, 94 based on Foata normal form. 2/1108 useless extension candidates. Maximal degree in co-relation 7333. Up to 1067 conditions per place. [2024-06-27 20:31:24,354 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 217 selfloop transitions, 19 changer transitions 0/238 dead transitions. [2024-06-27 20:31:24,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 238 transitions, 2650 flow [2024-06-27 20:31:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:24,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:31:24,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:31:24,355 INFO L175 Difference]: Start difference. First operand has 267 places, 226 transitions, 2148 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:31:24,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 238 transitions, 2650 flow [2024-06-27 20:31:24,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 238 transitions, 2600 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:24,680 INFO L231 Difference]: Finished difference. Result has 269 places, 226 transitions, 2140 flow [2024-06-27 20:31:24,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2140, PETRI_PLACES=269, PETRI_TRANSITIONS=226} [2024-06-27 20:31:24,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-27 20:31:24,681 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 226 transitions, 2140 flow [2024-06-27 20:31:24,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:24,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:24,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:24,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:31:24,681 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:24,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash -443904146, now seen corresponding path program 18 times [2024-06-27 20:31:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751779142] [2024-06-27 20:31:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:25,334 INFO 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 20:31:25,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:25,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751779142] [2024-06-27 20:31:25,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751779142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:25,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:25,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:25,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227073774] [2024-06-27 20:31:25,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:25,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:25,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:25,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:25,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:25,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:25,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 226 transitions, 2140 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:25,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:25,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:25,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:25,851 INFO L124 PetriNetUnfolderBase]: 614/1116 cut-off events. [2024-06-27 20:31:25,851 INFO L125 PetriNetUnfolderBase]: For 124954/124954 co-relation queries the response was YES. [2024-06-27 20:31:25,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 1116 events. 614/1116 cut-off events. For 124954/124954 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5851 event pairs, 91 based on Foata normal form. 2/1116 useless extension candidates. Maximal degree in co-relation 7381. Up to 1034 conditions per place. [2024-06-27 20:31:25,862 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 204 selfloop transitions, 33 changer transitions 0/239 dead transitions. [2024-06-27 20:31:25,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 239 transitions, 2839 flow [2024-06-27 20:31:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:31:25,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:31:25,863 INFO L175 Difference]: Start difference. First operand has 269 places, 226 transitions, 2140 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:31:25,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 239 transitions, 2839 flow [2024-06-27 20:31:26,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 239 transitions, 2700 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 20:31:26,140 INFO L231 Difference]: Finished difference. Result has 268 places, 227 transitions, 2088 flow [2024-06-27 20:31:26,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2088, PETRI_PLACES=268, PETRI_TRANSITIONS=227} [2024-06-27 20:31:26,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-27 20:31:26,141 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 227 transitions, 2088 flow [2024-06-27 20:31:26,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:26,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:26,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:26,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:31:26,141 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:26,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:26,142 INFO L85 PathProgramCache]: Analyzing trace with hash -254843674, now seen corresponding path program 19 times [2024-06-27 20:31:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:26,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001172332] [2024-06-27 20:31:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:26,921 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 20:31:26,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:26,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001172332] [2024-06-27 20:31:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001172332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:26,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:26,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790705771] [2024-06-27 20:31:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:26,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:26,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:26,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:27,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:27,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 227 transitions, 2088 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:27,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:27,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:27,345 INFO L124 PetriNetUnfolderBase]: 589/1065 cut-off events. [2024-06-27 20:31:27,346 INFO L125 PetriNetUnfolderBase]: For 85832/85832 co-relation queries the response was YES. [2024-06-27 20:31:27,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 1065 events. 589/1065 cut-off events. For 85832/85832 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5568 event pairs, 76 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 6206. Up to 1006 conditions per place. [2024-06-27 20:31:27,356 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 204 selfloop transitions, 32 changer transitions 0/238 dead transitions. [2024-06-27 20:31:27,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 238 transitions, 2601 flow [2024-06-27 20:31:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:31:27,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:31:27,358 INFO L175 Difference]: Start difference. First operand has 268 places, 227 transitions, 2088 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:31:27,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 238 transitions, 2601 flow [2024-06-27 20:31:27,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 238 transitions, 2425 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:27,585 INFO L231 Difference]: Finished difference. Result has 268 places, 228 transitions, 2001 flow [2024-06-27 20:31:27,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=268, PETRI_TRANSITIONS=228} [2024-06-27 20:31:27,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-27 20:31:27,586 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 228 transitions, 2001 flow [2024-06-27 20:31:27,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:27,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:27,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:27,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:31:27,586 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:27,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash -248177248, now seen corresponding path program 12 times [2024-06-27 20:31:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973152926] [2024-06-27 20:31:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:28,373 INFO 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 20:31:28,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973152926] [2024-06-27 20:31:28,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973152926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:28,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:28,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:28,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546690192] [2024-06-27 20:31:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:28,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:28,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:28,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:28,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 228 transitions, 2001 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:28,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:28,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:28,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:28,843 INFO L124 PetriNetUnfolderBase]: 595/1075 cut-off events. [2024-06-27 20:31:28,844 INFO L125 PetriNetUnfolderBase]: For 87761/87761 co-relation queries the response was YES. [2024-06-27 20:31:28,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6197 conditions, 1075 events. 595/1075 cut-off events. For 87761/87761 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5639 event pairs, 66 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 6079. Up to 987 conditions per place. [2024-06-27 20:31:28,853 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 31 changer transitions 0/243 dead transitions. [2024-06-27 20:31:28,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 243 transitions, 2563 flow [2024-06-27 20:31:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 20:31:28,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 20:31:28,855 INFO L175 Difference]: Start difference. First operand has 268 places, 228 transitions, 2001 flow. Second operand 10 states and 116 transitions. [2024-06-27 20:31:28,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 243 transitions, 2563 flow [2024-06-27 20:31:29,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 243 transitions, 2491 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:29,077 INFO L231 Difference]: Finished difference. Result has 270 places, 230 transitions, 2044 flow [2024-06-27 20:31:29,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=270, PETRI_TRANSITIONS=230} [2024-06-27 20:31:29,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 20:31:29,078 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 230 transitions, 2044 flow [2024-06-27 20:31:29,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:29,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:29,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:29,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:31:29,079 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:29,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2146873098, now seen corresponding path program 13 times [2024-06-27 20:31:29,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:29,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024807064] [2024-06-27 20:31:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:29,853 INFO 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 20:31:29,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024807064] [2024-06-27 20:31:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024807064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845333059] [2024-06-27 20:31:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:29,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:29,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:29,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:29,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 230 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:29,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:29,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:29,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:30,300 INFO L124 PetriNetUnfolderBase]: 601/1085 cut-off events. [2024-06-27 20:31:30,301 INFO L125 PetriNetUnfolderBase]: For 89782/89782 co-relation queries the response was YES. [2024-06-27 20:31:30,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6299 conditions, 1085 events. 601/1085 cut-off events. For 89782/89782 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5710 event pairs, 65 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 6180. Up to 903 conditions per place. [2024-06-27 20:31:30,311 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 58 changer transitions 0/247 dead transitions. [2024-06-27 20:31:30,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 247 transitions, 2804 flow [2024-06-27 20:31:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:31:30,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:31:30,313 INFO L175 Difference]: Start difference. First operand has 270 places, 230 transitions, 2044 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:31:30,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 247 transitions, 2804 flow [2024-06-27 20:31:30,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 247 transitions, 2715 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:30,536 INFO L231 Difference]: Finished difference. Result has 274 places, 232 transitions, 2118 flow [2024-06-27 20:31:30,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2118, PETRI_PLACES=274, PETRI_TRANSITIONS=232} [2024-06-27 20:31:30,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-27 20:31:30,537 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 232 transitions, 2118 flow [2024-06-27 20:31:30,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:30,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:30,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:30,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:31:30,538 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:30,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash -254663998, now seen corresponding path program 14 times [2024-06-27 20:31:30,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934387127] [2024-06-27 20:31:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934387127] [2024-06-27 20:31:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934387127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:31,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488939863] [2024-06-27 20:31:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:31,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:31,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 232 transitions, 2118 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:31,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:31,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:31,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:31,673 INFO L124 PetriNetUnfolderBase]: 597/1079 cut-off events. [2024-06-27 20:31:31,673 INFO L125 PetriNetUnfolderBase]: For 82662/82662 co-relation queries the response was YES. [2024-06-27 20:31:31,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 1079 events. 597/1079 cut-off events. For 82662/82662 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5666 event pairs, 65 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 5992. Up to 991 conditions per place. [2024-06-27 20:31:31,683 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 211 selfloop transitions, 32 changer transitions 0/245 dead transitions. [2024-06-27 20:31:31,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 245 transitions, 2640 flow [2024-06-27 20:31:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:31:31,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:31:31,685 INFO L175 Difference]: Start difference. First operand has 274 places, 232 transitions, 2118 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:31:31,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 245 transitions, 2640 flow [2024-06-27 20:31:31,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 245 transitions, 2493 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:31,872 INFO L231 Difference]: Finished difference. Result has 275 places, 232 transitions, 2040 flow [2024-06-27 20:31:31,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2040, PETRI_PLACES=275, PETRI_TRANSITIONS=232} [2024-06-27 20:31:31,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-27 20:31:31,873 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 232 transitions, 2040 flow [2024-06-27 20:31:31,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:31,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:31,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:31,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:31:31,874 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:31,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash -886833366, now seen corresponding path program 20 times [2024-06-27 20:31:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:31,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901417567] [2024-06-27 20:31:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:31,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:32,511 INFO 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 20:31:32,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:32,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901417567] [2024-06-27 20:31:32,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901417567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:32,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:32,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:32,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636510617] [2024-06-27 20:31:32,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:32,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:32,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:32,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:32,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:32,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 232 transitions, 2040 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:32,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:32,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:32,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:32,942 INFO L124 PetriNetUnfolderBase]: 601/1087 cut-off events. [2024-06-27 20:31:32,942 INFO L125 PetriNetUnfolderBase]: For 84020/84020 co-relation queries the response was YES. [2024-06-27 20:31:32,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6043 conditions, 1087 events. 601/1087 cut-off events. For 84020/84020 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5742 event pairs, 79 based on Foata normal form. 2/1087 useless extension candidates. Maximal degree in co-relation 5923. Up to 1055 conditions per place. [2024-06-27 20:31:32,952 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 224 selfloop transitions, 17 changer transitions 0/243 dead transitions. [2024-06-27 20:31:32,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 243 transitions, 2559 flow [2024-06-27 20:31:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:31:32,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:31:32,954 INFO L175 Difference]: Start difference. First operand has 275 places, 232 transitions, 2040 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:31:32,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 243 transitions, 2559 flow [2024-06-27 20:31:33,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 243 transitions, 2393 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-27 20:31:33,202 INFO L231 Difference]: Finished difference. Result has 274 places, 233 transitions, 1929 flow [2024-06-27 20:31:33,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1929, PETRI_PLACES=274, PETRI_TRANSITIONS=233} [2024-06-27 20:31:33,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-27 20:31:33,202 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 233 transitions, 1929 flow [2024-06-27 20:31:33,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:33,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:33,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:33,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:31:33,203 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:33,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash -254670694, now seen corresponding path program 21 times [2024-06-27 20:31:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611575121] [2024-06-27 20:31:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611575121] [2024-06-27 20:31:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611575121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72827700] [2024-06-27 20:31:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:33,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:33,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:33,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:33,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:33,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:33,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 233 transitions, 1929 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:33,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:33,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:33,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:34,252 INFO L124 PetriNetUnfolderBase]: 605/1095 cut-off events. [2024-06-27 20:31:34,252 INFO L125 PetriNetUnfolderBase]: For 85679/85679 co-relation queries the response was YES. [2024-06-27 20:31:34,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5929 conditions, 1095 events. 605/1095 cut-off events. For 85679/85679 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5798 event pairs, 79 based on Foata normal form. 2/1095 useless extension candidates. Maximal degree in co-relation 5809. Up to 1048 conditions per place. [2024-06-27 20:31:34,262 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 25 changer transitions 0/244 dead transitions. [2024-06-27 20:31:34,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 244 transitions, 2452 flow [2024-06-27 20:31:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:31:34,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:31:34,263 INFO L175 Difference]: Start difference. First operand has 274 places, 233 transitions, 1929 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:31:34,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 244 transitions, 2452 flow [2024-06-27 20:31:34,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 244 transitions, 2369 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 20:31:34,469 INFO L231 Difference]: Finished difference. Result has 273 places, 234 transitions, 1919 flow [2024-06-27 20:31:34,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1919, PETRI_PLACES=273, PETRI_TRANSITIONS=234} [2024-06-27 20:31:34,477 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-27 20:31:34,477 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 234 transitions, 1919 flow [2024-06-27 20:31:34,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:34,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:34,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:31:34,478 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:34,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash -254670508, now seen corresponding path program 15 times [2024-06-27 20:31:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337637273] [2024-06-27 20:31:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:35,221 INFO 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 20:31:35,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:35,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337637273] [2024-06-27 20:31:35,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337637273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:35,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:35,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203303315] [2024-06-27 20:31:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:35,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:35,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:35,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 234 transitions, 1919 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:35,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:35,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:35,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:35,665 INFO L124 PetriNetUnfolderBase]: 611/1105 cut-off events. [2024-06-27 20:31:35,665 INFO L125 PetriNetUnfolderBase]: For 85957/85957 co-relation queries the response was YES. [2024-06-27 20:31:35,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5983 conditions, 1105 events. 611/1105 cut-off events. For 85957/85957 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5869 event pairs, 65 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 5863. Up to 983 conditions per place. [2024-06-27 20:31:35,678 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 43 changer transitions 0/250 dead transitions. [2024-06-27 20:31:35,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 250 transitions, 2499 flow [2024-06-27 20:31:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:31:35,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:31:35,680 INFO L175 Difference]: Start difference. First operand has 273 places, 234 transitions, 1919 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:31:35,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 250 transitions, 2499 flow [2024-06-27 20:31:35,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 250 transitions, 2437 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:35,912 INFO L231 Difference]: Finished difference. Result has 275 places, 236 transitions, 1996 flow [2024-06-27 20:31:35,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=275, PETRI_TRANSITIONS=236} [2024-06-27 20:31:35,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-27 20:31:35,913 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 236 transitions, 1996 flow [2024-06-27 20:31:35,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:35,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:35,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:35,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:31:35,913 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:35,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -886833180, now seen corresponding path program 16 times [2024-06-27 20:31:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718715033] [2024-06-27 20:31:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:36,623 INFO 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 20:31:36,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:36,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718715033] [2024-06-27 20:31:36,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718715033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:36,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:36,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:36,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426274982] [2024-06-27 20:31:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:36,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:36,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:36,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:36,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 236 transitions, 1996 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:36,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:36,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:36,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:37,063 INFO L124 PetriNetUnfolderBase]: 617/1115 cut-off events. [2024-06-27 20:31:37,064 INFO L125 PetriNetUnfolderBase]: For 88092/88092 co-relation queries the response was YES. [2024-06-27 20:31:37,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6127 conditions, 1115 events. 617/1115 cut-off events. For 88092/88092 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5907 event pairs, 73 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 6006. Up to 1026 conditions per place. [2024-06-27 20:31:37,074 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 217 selfloop transitions, 32 changer transitions 0/251 dead transitions. [2024-06-27 20:31:37,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 251 transitions, 2578 flow [2024-06-27 20:31:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:31:37,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:31:37,075 INFO L175 Difference]: Start difference. First operand has 275 places, 236 transitions, 1996 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:31:37,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 251 transitions, 2578 flow [2024-06-27 20:31:37,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 251 transitions, 2461 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:37,280 INFO L231 Difference]: Finished difference. Result has 277 places, 238 transitions, 2000 flow [2024-06-27 20:31:37,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=277, PETRI_TRANSITIONS=238} [2024-06-27 20:31:37,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-27 20:31:37,281 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 238 transitions, 2000 flow [2024-06-27 20:31:37,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:37,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:37,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:37,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:31:37,282 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:37,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash -248414584, now seen corresponding path program 22 times [2024-06-27 20:31:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775084111] [2024-06-27 20:31:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:38,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775084111] [2024-06-27 20:31:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775084111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:38,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:38,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:38,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145587884] [2024-06-27 20:31:38,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:38,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:38,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:38,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:38,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:38,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:38,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 238 transitions, 2000 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:38,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:38,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:38,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:38,418 INFO L124 PetriNetUnfolderBase]: 614/1110 cut-off events. [2024-06-27 20:31:38,419 INFO L125 PetriNetUnfolderBase]: For 79796/79796 co-relation queries the response was YES. [2024-06-27 20:31:38,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 1110 events. 614/1110 cut-off events. For 79796/79796 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5878 event pairs, 74 based on Foata normal form. 2/1110 useless extension candidates. Maximal degree in co-relation 5737. Up to 1063 conditions per place. [2024-06-27 20:31:38,429 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 222 selfloop transitions, 24 changer transitions 0/248 dead transitions. [2024-06-27 20:31:38,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 248 transitions, 2514 flow [2024-06-27 20:31:38,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:31:38,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:31:38,430 INFO L175 Difference]: Start difference. First operand has 277 places, 238 transitions, 2000 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:31:38,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 248 transitions, 2514 flow [2024-06-27 20:31:38,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 248 transitions, 2405 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:38,622 INFO L231 Difference]: Finished difference. Result has 279 places, 238 transitions, 1943 flow [2024-06-27 20:31:38,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1943, PETRI_PLACES=279, PETRI_TRANSITIONS=238} [2024-06-27 20:31:38,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 20:31:38,622 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 238 transitions, 1943 flow [2024-06-27 20:31:38,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:38,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:38,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:38,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:31:38,623 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:38,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash -248414398, now seen corresponding path program 17 times [2024-06-27 20:31:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:38,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711754507] [2024-06-27 20:31:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:39,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:39,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711754507] [2024-06-27 20:31:39,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711754507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:39,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:39,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:39,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717983149] [2024-06-27 20:31:39,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:39,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:39,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:39,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 238 transitions, 1943 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:39,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:39,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:39,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:39,646 INFO L124 PetriNetUnfolderBase]: 610/1104 cut-off events. [2024-06-27 20:31:39,646 INFO L125 PetriNetUnfolderBase]: For 70837/70837 co-relation queries the response was YES. [2024-06-27 20:31:39,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 1104 events. 610/1104 cut-off events. For 70837/70837 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5871 event pairs, 67 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 5406. Up to 974 conditions per place. [2024-06-27 20:31:39,656 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 209 selfloop transitions, 41 changer transitions 0/252 dead transitions. [2024-06-27 20:31:39,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 252 transitions, 2483 flow [2024-06-27 20:31:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:31:39,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:31:39,657 INFO L175 Difference]: Start difference. First operand has 279 places, 238 transitions, 1943 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:31:39,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 252 transitions, 2483 flow [2024-06-27 20:31:39,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 252 transitions, 2319 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:39,849 INFO L231 Difference]: Finished difference. Result has 279 places, 238 transitions, 1866 flow [2024-06-27 20:31:39,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1866, PETRI_PLACES=279, PETRI_TRANSITIONS=238} [2024-06-27 20:31:39,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 20:31:39,849 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 238 transitions, 1866 flow [2024-06-27 20:31:39,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:39,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:39,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:39,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:31:39,850 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:39,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1536543890, now seen corresponding path program 1 times [2024-06-27 20:31:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034627888] [2024-06-27 20:31:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:39,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:40,866 INFO 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 20:31:40,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:40,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034627888] [2024-06-27 20:31:40,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034627888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:40,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:40,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:40,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427636255] [2024-06-27 20:31:40,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:40,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:40,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:40,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 238 transitions, 1866 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:40,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:40,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:40,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:41,394 INFO L124 PetriNetUnfolderBase]: 661/1209 cut-off events. [2024-06-27 20:31:41,395 INFO L125 PetriNetUnfolderBase]: For 152551/152551 co-relation queries the response was YES. [2024-06-27 20:31:41,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6806 conditions, 1209 events. 661/1209 cut-off events. For 152551/152551 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6494 event pairs, 71 based on Foata normal form. 8/1215 useless extension candidates. Maximal degree in co-relation 6682. Up to 604 conditions per place. [2024-06-27 20:31:41,406 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 144 selfloop transitions, 110 changer transitions 18/274 dead transitions. [2024-06-27 20:31:41,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 274 transitions, 2757 flow [2024-06-27 20:31:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 20:31:41,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-27 20:31:41,408 INFO L175 Difference]: Start difference. First operand has 279 places, 238 transitions, 1866 flow. Second operand 11 states and 142 transitions. [2024-06-27 20:31:41,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 274 transitions, 2757 flow [2024-06-27 20:31:41,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 274 transitions, 2565 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:41,712 INFO L231 Difference]: Finished difference. Result has 283 places, 239 transitions, 2127 flow [2024-06-27 20:31:41,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2127, PETRI_PLACES=283, PETRI_TRANSITIONS=239} [2024-06-27 20:31:41,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-27 20:31:41,713 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 239 transitions, 2127 flow [2024-06-27 20:31:41,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:41,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:41,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:41,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:31:41,714 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:41,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash -957557456, now seen corresponding path program 2 times [2024-06-27 20:31:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234436722] [2024-06-27 20:31:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:42,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:42,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234436722] [2024-06-27 20:31:42,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234436722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:42,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363867222] [2024-06-27 20:31:42,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:42,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:42,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:42,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:42,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:42,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 239 transitions, 2127 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:42,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:42,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:42,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:43,365 INFO L124 PetriNetUnfolderBase]: 674/1240 cut-off events. [2024-06-27 20:31:43,365 INFO L125 PetriNetUnfolderBase]: For 207774/207774 co-relation queries the response was YES. [2024-06-27 20:31:43,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8345 conditions, 1240 events. 674/1240 cut-off events. For 207774/207774 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6646 event pairs, 82 based on Foata normal form. 8/1246 useless extension candidates. Maximal degree in co-relation 8217. Up to 558 conditions per place. [2024-06-27 20:31:43,376 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 136 selfloop transitions, 115 changer transitions 19/272 dead transitions. [2024-06-27 20:31:43,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 272 transitions, 2991 flow [2024-06-27 20:31:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:31:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:31:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-27 20:31:43,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4381720430107527 [2024-06-27 20:31:43,377 INFO L175 Difference]: Start difference. First operand has 283 places, 239 transitions, 2127 flow. Second operand 12 states and 163 transitions. [2024-06-27 20:31:43,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 272 transitions, 2991 flow [2024-06-27 20:31:43,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 272 transitions, 2961 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:43,906 INFO L231 Difference]: Finished difference. Result has 281 places, 232 transitions, 2288 flow [2024-06-27 20:31:43,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2288, PETRI_PLACES=281, PETRI_TRANSITIONS=232} [2024-06-27 20:31:43,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-27 20:31:43,907 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 232 transitions, 2288 flow [2024-06-27 20:31:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:43,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:43,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:31:43,907 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:43,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1788117334, now seen corresponding path program 3 times [2024-06-27 20:31:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354122423] [2024-06-27 20:31:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:44,853 INFO 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 20:31:44,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:44,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354122423] [2024-06-27 20:31:44,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354122423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:44,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:44,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:44,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302124333] [2024-06-27 20:31:44,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:44,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:44,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:44,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:44,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:44,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 232 transitions, 2288 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:44,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:44,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:44,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:45,292 INFO L124 PetriNetUnfolderBase]: 685/1265 cut-off events. [2024-06-27 20:31:45,292 INFO L125 PetriNetUnfolderBase]: For 244821/244821 co-relation queries the response was YES. [2024-06-27 20:31:45,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9633 conditions, 1265 events. 685/1265 cut-off events. For 244821/244821 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6835 event pairs, 100 based on Foata normal form. 8/1271 useless extension candidates. Maximal degree in co-relation 9508. Up to 750 conditions per place. [2024-06-27 20:31:45,304 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 104 changer transitions 10/263 dead transitions. [2024-06-27 20:31:45,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 263 transitions, 3144 flow [2024-06-27 20:31:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 20:31:45,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-27 20:31:45,305 INFO L175 Difference]: Start difference. First operand has 281 places, 232 transitions, 2288 flow. Second operand 11 states and 141 transitions. [2024-06-27 20:31:45,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 263 transitions, 3144 flow [2024-06-27 20:31:45,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 263 transitions, 2865 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-27 20:31:45,784 INFO L231 Difference]: Finished difference. Result has 270 places, 232 transitions, 2240 flow [2024-06-27 20:31:45,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2240, PETRI_PLACES=270, PETRI_TRANSITIONS=232} [2024-06-27 20:31:45,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 20:31:45,784 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 232 transitions, 2240 flow [2024-06-27 20:31:45,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:45,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:45,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:31:45,785 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1674478208, now seen corresponding path program 4 times [2024-06-27 20:31:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108747151] [2024-06-27 20:31:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:46,570 INFO 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 20:31:46,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:46,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108747151] [2024-06-27 20:31:46,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108747151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:46,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:46,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:46,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561884616] [2024-06-27 20:31:46,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:46,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:46,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:46,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:46,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:46,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:46,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 232 transitions, 2240 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:46,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:46,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:46,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:47,185 INFO L124 PetriNetUnfolderBase]: 641/1181 cut-off events. [2024-06-27 20:31:47,185 INFO L125 PetriNetUnfolderBase]: For 189769/189769 co-relation queries the response was YES. [2024-06-27 20:31:47,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7259 conditions, 1181 events. 641/1181 cut-off events. For 189769/189769 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6334 event pairs, 72 based on Foata normal form. 20/1199 useless extension candidates. Maximal degree in co-relation 7138. Up to 673 conditions per place. [2024-06-27 20:31:47,196 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 129 selfloop transitions, 113 changer transitions 18/262 dead transitions. [2024-06-27 20:31:47,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 262 transitions, 2862 flow [2024-06-27 20:31:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 20:31:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 20:31:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 181 transitions. [2024-06-27 20:31:47,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38924731182795697 [2024-06-27 20:31:47,198 INFO L175 Difference]: Start difference. First operand has 270 places, 232 transitions, 2240 flow. Second operand 15 states and 181 transitions. [2024-06-27 20:31:47,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 262 transitions, 2862 flow [2024-06-27 20:31:47,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 262 transitions, 2735 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:47,452 INFO L231 Difference]: Finished difference. Result has 275 places, 223 transitions, 2264 flow [2024-06-27 20:31:47,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2264, PETRI_PLACES=275, PETRI_TRANSITIONS=223} [2024-06-27 20:31:47,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-27 20:31:47,453 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 223 transitions, 2264 flow [2024-06-27 20:31:47,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:47,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:47,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:47,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:31:47,454 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:47,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:47,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1787973184, now seen corresponding path program 5 times [2024-06-27 20:31:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:47,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339811047] [2024-06-27 20:31:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:47,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:48,240 INFO 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 20:31:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339811047] [2024-06-27 20:31:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339811047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:48,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271836038] [2024-06-27 20:31:48,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:48,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:48,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:48,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:48,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 223 transitions, 2264 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:48,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:48,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:48,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:48,833 INFO L124 PetriNetUnfolderBase]: 644/1198 cut-off events. [2024-06-27 20:31:48,833 INFO L125 PetriNetUnfolderBase]: For 202588/202588 co-relation queries the response was YES. [2024-06-27 20:31:48,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8809 conditions, 1198 events. 644/1198 cut-off events. For 202588/202588 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6397 event pairs, 88 based on Foata normal form. 8/1204 useless extension candidates. Maximal degree in co-relation 8689. Up to 579 conditions per place. [2024-06-27 20:31:48,844 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 103 changer transitions 24/256 dead transitions. [2024-06-27 20:31:48,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 256 transitions, 3080 flow [2024-06-27 20:31:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:31:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:31:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-27 20:31:48,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143920595533499 [2024-06-27 20:31:48,846 INFO L175 Difference]: Start difference. First operand has 275 places, 223 transitions, 2264 flow. Second operand 13 states and 167 transitions. [2024-06-27 20:31:48,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 256 transitions, 3080 flow [2024-06-27 20:31:49,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 2693 flow, removed 4 selfloop flow, removed 18 redundant places. [2024-06-27 20:31:49,292 INFO L231 Difference]: Finished difference. Result has 266 places, 212 transitions, 2021 flow [2024-06-27 20:31:49,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2021, PETRI_PLACES=266, PETRI_TRANSITIONS=212} [2024-06-27 20:31:49,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 20:31:49,293 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 212 transitions, 2021 flow [2024-06-27 20:31:49,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:49,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:49,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:49,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:31:49,294 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:49,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -656301256, now seen corresponding path program 6 times [2024-06-27 20:31:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:49,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482494892] [2024-06-27 20:31:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:49,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:50,332 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 20:31:50,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:50,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482494892] [2024-06-27 20:31:50,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482494892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:50,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871333386] [2024-06-27 20:31:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:50,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:50,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 212 transitions, 2021 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:50,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:50,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:50,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:50,878 INFO L124 PetriNetUnfolderBase]: 694/1280 cut-off events. [2024-06-27 20:31:50,878 INFO L125 PetriNetUnfolderBase]: For 207635/207635 co-relation queries the response was YES. [2024-06-27 20:31:50,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9078 conditions, 1280 events. 694/1280 cut-off events. For 207635/207635 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6859 event pairs, 131 based on Foata normal form. 10/1288 useless extension candidates. Maximal degree in co-relation 8960. Up to 1045 conditions per place. [2024-06-27 20:31:50,888 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 203 selfloop transitions, 49 changer transitions 11/265 dead transitions. [2024-06-27 20:31:50,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 265 transitions, 2971 flow [2024-06-27 20:31:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:31:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:31:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 20:31:50,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:31:50,889 INFO L175 Difference]: Start difference. First operand has 266 places, 212 transitions, 2021 flow. Second operand 12 states and 140 transitions. [2024-06-27 20:31:50,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 265 transitions, 2971 flow [2024-06-27 20:31:51,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 265 transitions, 2695 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-27 20:31:51,193 INFO L231 Difference]: Finished difference. Result has 257 places, 237 transitions, 2250 flow [2024-06-27 20:31:51,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2250, PETRI_PLACES=257, PETRI_TRANSITIONS=237} [2024-06-27 20:31:51,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 20:31:51,194 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 237 transitions, 2250 flow [2024-06-27 20:31:51,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:51,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:51,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:51,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:31:51,195 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:51,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash -419654374, now seen corresponding path program 7 times [2024-06-27 20:31:51,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:51,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382914592] [2024-06-27 20:31:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:51,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:52,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:52,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382914592] [2024-06-27 20:31:52,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382914592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:52,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:52,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:52,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014319916] [2024-06-27 20:31:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:52,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:52,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 237 transitions, 2250 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:52,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:52,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:52,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:52,788 INFO L124 PetriNetUnfolderBase]: 680/1258 cut-off events. [2024-06-27 20:31:52,789 INFO L125 PetriNetUnfolderBase]: For 178278/178278 co-relation queries the response was YES. [2024-06-27 20:31:52,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8746 conditions, 1258 events. 680/1258 cut-off events. For 178278/178278 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6727 event pairs, 103 based on Foata normal form. 8/1264 useless extension candidates. Maximal degree in co-relation 8627. Up to 821 conditions per place. [2024-06-27 20:31:52,800 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 73 changer transitions 12/263 dead transitions. [2024-06-27 20:31:52,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 263 transitions, 3048 flow [2024-06-27 20:31:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 20:31:52,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-27 20:31:52,802 INFO L175 Difference]: Start difference. First operand has 257 places, 237 transitions, 2250 flow. Second operand 11 states and 140 transitions. [2024-06-27 20:31:52,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 263 transitions, 3048 flow [2024-06-27 20:31:53,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 263 transitions, 2995 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:31:53,153 INFO L231 Difference]: Finished difference. Result has 260 places, 233 transitions, 2310 flow [2024-06-27 20:31:53,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2310, PETRI_PLACES=260, PETRI_TRANSITIONS=233} [2024-06-27 20:31:53,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-27 20:31:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 233 transitions, 2310 flow [2024-06-27 20:31:53,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:53,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:53,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:53,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:31:53,154 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:53,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -661871026, now seen corresponding path program 8 times [2024-06-27 20:31:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:53,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957087016] [2024-06-27 20:31:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:53,920 INFO 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 20:31:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:53,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957087016] [2024-06-27 20:31:53,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957087016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:53,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:53,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423509332] [2024-06-27 20:31:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:53,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:53,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:54,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:54,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 233 transitions, 2310 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:54,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:54,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:54,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:54,437 INFO L124 PetriNetUnfolderBase]: 671/1243 cut-off events. [2024-06-27 20:31:54,437 INFO L125 PetriNetUnfolderBase]: For 178731/178731 co-relation queries the response was YES. [2024-06-27 20:31:54,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8778 conditions, 1243 events. 671/1243 cut-off events. For 178731/178731 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6627 event pairs, 101 based on Foata normal form. 8/1249 useless extension candidates. Maximal degree in co-relation 8660. Up to 895 conditions per place. [2024-06-27 20:31:54,448 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 77 changer transitions 16/255 dead transitions. [2024-06-27 20:31:54,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 255 transitions, 2886 flow [2024-06-27 20:31:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:31:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:31:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 20:31:54,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-27 20:31:54,450 INFO L175 Difference]: Start difference. First operand has 260 places, 233 transitions, 2310 flow. Second operand 12 states and 143 transitions. [2024-06-27 20:31:54,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 255 transitions, 2886 flow [2024-06-27 20:31:54,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 255 transitions, 2736 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:31:54,737 INFO L231 Difference]: Finished difference. Result has 258 places, 228 transitions, 2275 flow [2024-06-27 20:31:54,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2275, PETRI_PLACES=258, PETRI_TRANSITIONS=228} [2024-06-27 20:31:54,737 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-27 20:31:54,737 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 228 transitions, 2275 flow [2024-06-27 20:31:54,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:54,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:54,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:54,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:31:54,738 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:54,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash 752612400, now seen corresponding path program 9 times [2024-06-27 20:31:54,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653955895] [2024-06-27 20:31:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:54,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:55,563 INFO 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 20:31:55,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:55,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653955895] [2024-06-27 20:31:55,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653955895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:55,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:55,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115457471] [2024-06-27 20:31:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:55,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:55,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:55,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 228 transitions, 2275 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:55,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:55,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:55,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:56,135 INFO L124 PetriNetUnfolderBase]: 661/1225 cut-off events. [2024-06-27 20:31:56,136 INFO L125 PetriNetUnfolderBase]: For 174974/174974 co-relation queries the response was YES. [2024-06-27 20:31:56,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8667 conditions, 1225 events. 661/1225 cut-off events. For 174974/174974 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6506 event pairs, 101 based on Foata normal form. 8/1231 useless extension candidates. Maximal degree in co-relation 8550. Up to 782 conditions per place. [2024-06-27 20:31:56,147 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 69 changer transitions 16/256 dead transitions. [2024-06-27 20:31:56,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 256 transitions, 3061 flow [2024-06-27 20:31:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:31:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:31:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-27 20:31:56,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-27 20:31:56,148 INFO L175 Difference]: Start difference. First operand has 258 places, 228 transitions, 2275 flow. Second operand 13 states and 155 transitions. [2024-06-27 20:31:56,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 256 transitions, 3061 flow [2024-06-27 20:31:56,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 256 transitions, 2899 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:56,444 INFO L231 Difference]: Finished difference. Result has 255 places, 222 transitions, 2211 flow [2024-06-27 20:31:56,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2211, PETRI_PLACES=255, PETRI_TRANSITIONS=222} [2024-06-27 20:31:56,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 20:31:56,444 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 222 transitions, 2211 flow [2024-06-27 20:31:56,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:56,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:56,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:56,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:31:56,445 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:56,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -585698000, now seen corresponding path program 10 times [2024-06-27 20:31:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397909907] [2024-06-27 20:31:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:57,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397909907] [2024-06-27 20:31:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397909907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:57,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464201716] [2024-06-27 20:31:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:57,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:57,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:57,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 222 transitions, 2211 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:57,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:57,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:57,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:57,931 INFO L124 PetriNetUnfolderBase]: 650/1203 cut-off events. [2024-06-27 20:31:57,931 INFO L125 PetriNetUnfolderBase]: For 170650/170652 co-relation queries the response was YES. [2024-06-27 20:31:57,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8531 conditions, 1203 events. 650/1203 cut-off events. For 170650/170652 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6325 event pairs, 83 based on Foata normal form. 10/1211 useless extension candidates. Maximal degree in co-relation 8415. Up to 355 conditions per place. [2024-06-27 20:31:57,943 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 110 selfloop transitions, 125 changer transitions 19/256 dead transitions. [2024-06-27 20:31:57,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 256 transitions, 3015 flow [2024-06-27 20:31:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 20:31:57,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 20:31:57,945 INFO L175 Difference]: Start difference. First operand has 255 places, 222 transitions, 2211 flow. Second operand 11 states and 147 transitions. [2024-06-27 20:31:57,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 256 transitions, 3015 flow [2024-06-27 20:31:58,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 256 transitions, 2857 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 20:31:58,255 INFO L231 Difference]: Finished difference. Result has 246 places, 218 transitions, 2291 flow [2024-06-27 20:31:58,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2291, PETRI_PLACES=246, PETRI_TRANSITIONS=218} [2024-06-27 20:31:58,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-27 20:31:58,255 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 218 transitions, 2291 flow [2024-06-27 20:31:58,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:58,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:58,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:58,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:31:58,256 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:58,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1742585886, now seen corresponding path program 11 times [2024-06-27 20:31:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950849959] [2024-06-27 20:31:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:58,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:59,018 INFO 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 20:31:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950849959] [2024-06-27 20:31:59,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950849959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:59,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:59,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:59,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377249005] [2024-06-27 20:31:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:59,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:59,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:59,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:31:59,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 218 transitions, 2291 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:59,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:59,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:31:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:59,576 INFO L124 PetriNetUnfolderBase]: 617/1134 cut-off events. [2024-06-27 20:31:59,577 INFO L125 PetriNetUnfolderBase]: For 146159/146161 co-relation queries the response was YES. [2024-06-27 20:31:59,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7840 conditions, 1134 events. 617/1134 cut-off events. For 146159/146161 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5880 event pairs, 79 based on Foata normal form. 12/1144 useless extension candidates. Maximal degree in co-relation 7727. Up to 591 conditions per place. [2024-06-27 20:31:59,586 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 95 selfloop transitions, 132 changer transitions 14/243 dead transitions. [2024-06-27 20:31:59,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 243 transitions, 2861 flow [2024-06-27 20:31:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 20:31:59,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-27 20:31:59,588 INFO L175 Difference]: Start difference. First operand has 246 places, 218 transitions, 2291 flow. Second operand 11 states and 142 transitions. [2024-06-27 20:31:59,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 243 transitions, 2861 flow [2024-06-27 20:31:59,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 243 transitions, 2652 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:59,844 INFO L231 Difference]: Finished difference. Result has 241 places, 215 transitions, 2322 flow [2024-06-27 20:31:59,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2322, PETRI_PLACES=241, PETRI_TRANSITIONS=215} [2024-06-27 20:31:59,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-27 20:31:59,844 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 215 transitions, 2322 flow [2024-06-27 20:31:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:59,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:59,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:31:59,845 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:59,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1742580306, now seen corresponding path program 12 times [2024-06-27 20:31:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337587855] [2024-06-27 20:31:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:00,632 INFO 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 20:32:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337587855] [2024-06-27 20:32:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337587855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:00,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21622388] [2024-06-27 20:32:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:00,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:00,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:00,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 215 transitions, 2322 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:00,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:00,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:00,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:01,170 INFO L124 PetriNetUnfolderBase]: 634/1173 cut-off events. [2024-06-27 20:32:01,170 INFO L125 PetriNetUnfolderBase]: For 161042/161044 co-relation queries the response was YES. [2024-06-27 20:32:01,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8800 conditions, 1173 events. 634/1173 cut-off events. For 161042/161044 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6169 event pairs, 90 based on Foata normal form. 10/1181 useless extension candidates. Maximal degree in co-relation 8690. Up to 594 conditions per place. [2024-06-27 20:32:01,180 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 117 changer transitions 14/247 dead transitions. [2024-06-27 20:32:01,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 247 transitions, 3088 flow [2024-06-27 20:32:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:32:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:32:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-27 20:32:01,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40198511166253104 [2024-06-27 20:32:01,181 INFO L175 Difference]: Start difference. First operand has 241 places, 215 transitions, 2322 flow. Second operand 13 states and 162 transitions. [2024-06-27 20:32:01,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 247 transitions, 3088 flow [2024-06-27 20:32:01,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 247 transitions, 2816 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:01,468 INFO L231 Difference]: Finished difference. Result has 241 places, 209 transitions, 2236 flow [2024-06-27 20:32:01,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2236, PETRI_PLACES=241, PETRI_TRANSITIONS=209} [2024-06-27 20:32:01,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-27 20:32:01,468 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 209 transitions, 2236 flow [2024-06-27 20:32:01,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:01,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:01,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:01,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:32:01,469 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:01,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2135134656, now seen corresponding path program 13 times [2024-06-27 20:32:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:01,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131872021] [2024-06-27 20:32:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:02,310 INFO 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 20:32:02,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:02,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131872021] [2024-06-27 20:32:02,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131872021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:02,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:02,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419671650] [2024-06-27 20:32:02,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:02,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:02,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:02,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 209 transitions, 2236 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:02,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:02,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:02,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:02,879 INFO L124 PetriNetUnfolderBase]: 619/1148 cut-off events. [2024-06-27 20:32:02,879 INFO L125 PetriNetUnfolderBase]: For 156990/156992 co-relation queries the response was YES. [2024-06-27 20:32:02,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8617 conditions, 1148 events. 619/1148 cut-off events. For 156990/156992 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6016 event pairs, 84 based on Foata normal form. 10/1156 useless extension candidates. Maximal degree in co-relation 8508. Up to 558 conditions per place. [2024-06-27 20:32:02,890 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 110 selfloop transitions, 110 changer transitions 19/241 dead transitions. [2024-06-27 20:32:02,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 241 transitions, 2988 flow [2024-06-27 20:32:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-27 20:32:02,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:32:02,891 INFO L175 Difference]: Start difference. First operand has 241 places, 209 transitions, 2236 flow. Second operand 12 states and 155 transitions. [2024-06-27 20:32:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 241 transitions, 2988 flow [2024-06-27 20:32:03,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 241 transitions, 2742 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-27 20:32:03,214 INFO L231 Difference]: Finished difference. Result has 235 places, 200 transitions, 2145 flow [2024-06-27 20:32:03,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2145, PETRI_PLACES=235, PETRI_TRANSITIONS=200} [2024-06-27 20:32:03,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-27 20:32:03,215 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 200 transitions, 2145 flow [2024-06-27 20:32:03,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:03,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:03,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:03,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:32:03,215 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:03,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash 420406810, now seen corresponding path program 1 times [2024-06-27 20:32:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:03,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165314841] [2024-06-27 20:32:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:03,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165314841] [2024-06-27 20:32:04,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165314841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:04,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:04,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:04,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682591496] [2024-06-27 20:32:04,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:04,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:04,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:04,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:04,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:04,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:04,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 200 transitions, 2145 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:04,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:04,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:04,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:04,507 INFO L124 PetriNetUnfolderBase]: 580/1073 cut-off events. [2024-06-27 20:32:04,508 INFO L125 PetriNetUnfolderBase]: For 132042/132042 co-relation queries the response was YES. [2024-06-27 20:32:04,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8219 conditions, 1073 events. 580/1073 cut-off events. For 132042/132042 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5547 event pairs, 90 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 8112. Up to 797 conditions per place. [2024-06-27 20:32:04,518 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 64 changer transitions 0/215 dead transitions. [2024-06-27 20:32:04,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 215 transitions, 2619 flow [2024-06-27 20:32:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:32:04,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:32:04,519 INFO L175 Difference]: Start difference. First operand has 235 places, 200 transitions, 2145 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:32:04,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 215 transitions, 2619 flow [2024-06-27 20:32:04,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 215 transitions, 2389 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-27 20:32:04,722 INFO L231 Difference]: Finished difference. Result has 223 places, 201 transitions, 2060 flow [2024-06-27 20:32:04,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2060, PETRI_PLACES=223, PETRI_TRANSITIONS=201} [2024-06-27 20:32:04,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-27 20:32:04,723 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 201 transitions, 2060 flow [2024-06-27 20:32:04,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:04,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:04,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:04,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:32:04,724 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:04,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -438082820, now seen corresponding path program 14 times [2024-06-27 20:32:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:04,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909021834] [2024-06-27 20:32:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:04,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:05,626 INFO 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 20:32:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909021834] [2024-06-27 20:32:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909021834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:05,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144151078] [2024-06-27 20:32:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:05,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:05,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 201 transitions, 2060 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:05,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:05,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:05,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:06,076 INFO L124 PetriNetUnfolderBase]: 596/1108 cut-off events. [2024-06-27 20:32:06,076 INFO L125 PetriNetUnfolderBase]: For 135838/135840 co-relation queries the response was YES. [2024-06-27 20:32:06,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 1108 events. 596/1108 cut-off events. For 135838/135840 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5800 event pairs, 92 based on Foata normal form. 12/1118 useless extension candidates. Maximal degree in co-relation 7883. Up to 762 conditions per place. [2024-06-27 20:32:06,085 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 78 changer transitions 16/223 dead transitions. [2024-06-27 20:32:06,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 223 transitions, 2576 flow [2024-06-27 20:32:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 20:32:06,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 20:32:06,086 INFO L175 Difference]: Start difference. First operand has 223 places, 201 transitions, 2060 flow. Second operand 12 states and 141 transitions. [2024-06-27 20:32:06,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 223 transitions, 2576 flow [2024-06-27 20:32:06,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 223 transitions, 2423 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:06,269 INFO L231 Difference]: Finished difference. Result has 226 places, 195 transitions, 2003 flow [2024-06-27 20:32:06,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2003, PETRI_PLACES=226, PETRI_TRANSITIONS=195} [2024-06-27 20:32:06,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-27 20:32:06,270 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 195 transitions, 2003 flow [2024-06-27 20:32:06,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:06,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:06,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:06,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:32:06,271 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:06,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1996456776, now seen corresponding path program 15 times [2024-06-27 20:32:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214681628] [2024-06-27 20:32:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:06,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214681628] [2024-06-27 20:32:06,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214681628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:06,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:06,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209137897] [2024-06-27 20:32:06,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:06,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:07,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:07,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 195 transitions, 2003 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:07,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:07,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:07,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:07,362 INFO L124 PetriNetUnfolderBase]: 554/1026 cut-off events. [2024-06-27 20:32:07,363 INFO L125 PetriNetUnfolderBase]: For 112939/112941 co-relation queries the response was YES. [2024-06-27 20:32:07,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 1026 events. 554/1026 cut-off events. For 112939/112941 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5218 event pairs, 73 based on Foata normal form. 12/1036 useless extension candidates. Maximal degree in co-relation 6901. Up to 683 conditions per place. [2024-06-27 20:32:07,371 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 122 selfloop transitions, 72 changer transitions 21/217 dead transitions. [2024-06-27 20:32:07,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 217 transitions, 2507 flow [2024-06-27 20:32:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 20:32:07,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:32:07,373 INFO L175 Difference]: Start difference. First operand has 226 places, 195 transitions, 2003 flow. Second operand 12 states and 140 transitions. [2024-06-27 20:32:07,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 217 transitions, 2507 flow [2024-06-27 20:32:07,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 217 transitions, 2343 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:07,531 INFO L231 Difference]: Finished difference. Result has 220 places, 185 transitions, 1887 flow [2024-06-27 20:32:07,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1839, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1887, PETRI_PLACES=220, PETRI_TRANSITIONS=185} [2024-06-27 20:32:07,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-27 20:32:07,532 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 185 transitions, 1887 flow [2024-06-27 20:32:07,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:07,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:07,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:32:07,532 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:07,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1138182472, now seen corresponding path program 16 times [2024-06-27 20:32:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080759204] [2024-06-27 20:32:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:08,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:08,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080759204] [2024-06-27 20:32:08,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080759204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:08,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:08,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710816289] [2024-06-27 20:32:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:08,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:08,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:08,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:08,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 185 transitions, 1887 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:08,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:08,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:08,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:08,800 INFO L124 PetriNetUnfolderBase]: 561/1044 cut-off events. [2024-06-27 20:32:08,800 INFO L125 PetriNetUnfolderBase]: For 123243/123243 co-relation queries the response was YES. [2024-06-27 20:32:08,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1044 events. 561/1044 cut-off events. For 123243/123243 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5371 event pairs, 81 based on Foata normal form. 8/1050 useless extension candidates. Maximal degree in co-relation 7462. Up to 595 conditions per place. [2024-06-27 20:32:08,809 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 81 changer transitions 7/211 dead transitions. [2024-06-27 20:32:08,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 211 transitions, 2541 flow [2024-06-27 20:32:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:32:08,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 20:32:08,810 INFO L175 Difference]: Start difference. First operand has 220 places, 185 transitions, 1887 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:32:08,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 211 transitions, 2541 flow [2024-06-27 20:32:08,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 211 transitions, 2368 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 20:32:08,969 INFO L231 Difference]: Finished difference. Result has 209 places, 183 transitions, 1872 flow [2024-06-27 20:32:08,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1872, PETRI_PLACES=209, PETRI_TRANSITIONS=183} [2024-06-27 20:32:08,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-27 20:32:08,970 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 183 transitions, 1872 flow [2024-06-27 20:32:08,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:08,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:08,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:08,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:32:08,971 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:08,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash 614130894, now seen corresponding path program 17 times [2024-06-27 20:32:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530681173] [2024-06-27 20:32:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:09,893 INFO 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 20:32:09,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:09,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530681173] [2024-06-27 20:32:09,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530681173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:09,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:09,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:09,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125273183] [2024-06-27 20:32:09,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:09,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:09,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:10,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:10,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 183 transitions, 1872 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:10,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:10,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:10,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:10,399 INFO L124 PetriNetUnfolderBase]: 606/1139 cut-off events. [2024-06-27 20:32:10,399 INFO L125 PetriNetUnfolderBase]: For 148537/148537 co-relation queries the response was YES. [2024-06-27 20:32:10,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8858 conditions, 1139 events. 606/1139 cut-off events. For 148537/148537 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6055 event pairs, 120 based on Foata normal form. 8/1145 useless extension candidates. Maximal degree in co-relation 8762. Up to 687 conditions per place. [2024-06-27 20:32:10,408 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 63 changer transitions 7/208 dead transitions. [2024-06-27 20:32:10,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 208 transitions, 2518 flow [2024-06-27 20:32:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 20:32:10,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-27 20:32:10,409 INFO L175 Difference]: Start difference. First operand has 209 places, 183 transitions, 1872 flow. Second operand 11 states and 137 transitions. [2024-06-27 20:32:10,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 208 transitions, 2518 flow [2024-06-27 20:32:10,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 208 transitions, 2350 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:10,578 INFO L231 Difference]: Finished difference. Result has 207 places, 181 transitions, 1820 flow [2024-06-27 20:32:10,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1820, PETRI_PLACES=207, PETRI_TRANSITIONS=181} [2024-06-27 20:32:10,578 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 20:32:10,578 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 181 transitions, 1820 flow [2024-06-27 20:32:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:10,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:10,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:10,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:32:10,579 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:10,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:10,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1138326622, now seen corresponding path program 18 times [2024-06-27 20:32:10,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:10,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343785913] [2024-06-27 20:32:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:10,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:11,388 INFO 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 20:32:11,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343785913] [2024-06-27 20:32:11,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343785913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:11,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:11,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:11,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504772346] [2024-06-27 20:32:11,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:11,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:11,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:11,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:11,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:11,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:11,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 181 transitions, 1820 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:11,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:11,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:11,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:11,932 INFO L124 PetriNetUnfolderBase]: 629/1188 cut-off events. [2024-06-27 20:32:11,932 INFO L125 PetriNetUnfolderBase]: For 164677/164677 co-relation queries the response was YES. [2024-06-27 20:32:11,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 1188 events. 629/1188 cut-off events. For 164677/164677 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6379 event pairs, 117 based on Foata normal form. 8/1194 useless extension candidates. Maximal degree in co-relation 9454. Up to 573 conditions per place. [2024-06-27 20:32:11,941 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 78 changer transitions 10/207 dead transitions. [2024-06-27 20:32:11,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 207 transitions, 2454 flow [2024-06-27 20:32:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:32:11,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-27 20:32:11,942 INFO L175 Difference]: Start difference. First operand has 207 places, 181 transitions, 1820 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:32:11,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 207 transitions, 2454 flow [2024-06-27 20:32:12,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 207 transitions, 2330 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:12,125 INFO L231 Difference]: Finished difference. Result has 207 places, 178 transitions, 1838 flow [2024-06-27 20:32:12,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1838, PETRI_PLACES=207, PETRI_TRANSITIONS=178} [2024-06-27 20:32:12,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 20:32:12,126 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 178 transitions, 1838 flow [2024-06-27 20:32:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:12,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:12,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:12,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:32:12,126 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:12,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash -938875102, now seen corresponding path program 19 times [2024-06-27 20:32:12,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:12,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240254612] [2024-06-27 20:32:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:12,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:12,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240254612] [2024-06-27 20:32:12,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240254612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:12,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:12,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:12,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557799556] [2024-06-27 20:32:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:12,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:12,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:12,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:13,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:13,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 178 transitions, 1838 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:13,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:13,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:13,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:13,465 INFO L124 PetriNetUnfolderBase]: 623/1178 cut-off events. [2024-06-27 20:32:13,465 INFO L125 PetriNetUnfolderBase]: For 163890/163890 co-relation queries the response was YES. [2024-06-27 20:32:13,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 1178 events. 623/1178 cut-off events. For 163890/163890 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6366 event pairs, 132 based on Foata normal form. 10/1186 useless extension candidates. Maximal degree in co-relation 9408. Up to 827 conditions per place. [2024-06-27 20:32:13,475 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 116 selfloop transitions, 68 changer transitions 13/199 dead transitions. [2024-06-27 20:32:13,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 199 transitions, 2304 flow [2024-06-27 20:32:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 20:32:13,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-27 20:32:13,476 INFO L175 Difference]: Start difference. First operand has 207 places, 178 transitions, 1838 flow. Second operand 12 states and 143 transitions. [2024-06-27 20:32:13,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 199 transitions, 2304 flow [2024-06-27 20:32:13,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 199 transitions, 2155 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:13,657 INFO L231 Difference]: Finished difference. Result has 204 places, 173 transitions, 1769 flow [2024-06-27 20:32:13,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1769, PETRI_PLACES=204, PETRI_TRANSITIONS=173} [2024-06-27 20:32:13,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-27 20:32:13,658 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 173 transitions, 1769 flow [2024-06-27 20:32:13,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:13,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:13,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:13,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:32:13,658 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:13,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:13,659 INFO L85 PathProgramCache]: Analyzing trace with hash 614346220, now seen corresponding path program 2 times [2024-06-27 20:32:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:13,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111912174] [2024-06-27 20:32:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:13,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:14,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111912174] [2024-06-27 20:32:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111912174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:14,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:14,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829717106] [2024-06-27 20:32:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:14,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:14,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:14,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:14,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 173 transitions, 1769 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:14,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:14,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:14,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:14,957 INFO L124 PetriNetUnfolderBase]: 600/1133 cut-off events. [2024-06-27 20:32:14,958 INFO L125 PetriNetUnfolderBase]: For 138939/138939 co-relation queries the response was YES. [2024-06-27 20:32:14,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9192 conditions, 1133 events. 600/1133 cut-off events. For 138939/138939 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6031 event pairs, 133 based on Foata normal form. 2/1133 useless extension candidates. Maximal degree in co-relation 9100. Up to 877 conditions per place. [2024-06-27 20:32:14,966 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 57 changer transitions 0/188 dead transitions. [2024-06-27 20:32:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 188 transitions, 2191 flow [2024-06-27 20:32:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 20:32:14,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 20:32:14,968 INFO L175 Difference]: Start difference. First operand has 204 places, 173 transitions, 1769 flow. Second operand 10 states and 119 transitions. [2024-06-27 20:32:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 188 transitions, 2191 flow [2024-06-27 20:32:15,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 188 transitions, 2049 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 20:32:15,158 INFO L231 Difference]: Finished difference. Result has 198 places, 174 transitions, 1760 flow [2024-06-27 20:32:15,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1760, PETRI_PLACES=198, PETRI_TRANSITIONS=174} [2024-06-27 20:32:15,158 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 20:32:15,159 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 174 transitions, 1760 flow [2024-06-27 20:32:15,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:15,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:15,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:32:15,159 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:15,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash 614338284, now seen corresponding path program 20 times [2024-06-27 20:32:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99114864] [2024-06-27 20:32:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:16,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:16,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99114864] [2024-06-27 20:32:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99114864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:16,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:16,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:16,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430770921] [2024-06-27 20:32:16,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:16,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:16,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:16,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:16,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 174 transitions, 1760 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:16,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:16,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:16,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:16,742 INFO L124 PetriNetUnfolderBase]: 624/1189 cut-off events. [2024-06-27 20:32:16,743 INFO L125 PetriNetUnfolderBase]: For 154678/154678 co-relation queries the response was YES. [2024-06-27 20:32:16,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9198 conditions, 1189 events. 624/1189 cut-off events. For 154678/154678 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6470 event pairs, 140 based on Foata normal form. 16/1203 useless extension candidates. Maximal degree in co-relation 9108. Up to 838 conditions per place. [2024-06-27 20:32:16,752 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 52 changer transitions 21/194 dead transitions. [2024-06-27 20:32:16,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 194 transitions, 2214 flow [2024-06-27 20:32:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:32:16,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 20:32:16,753 INFO L175 Difference]: Start difference. First operand has 198 places, 174 transitions, 1760 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:32:16,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 194 transitions, 2214 flow [2024-06-27 20:32:16,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 194 transitions, 2095 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:16,936 INFO L231 Difference]: Finished difference. Result has 201 places, 163 transitions, 1626 flow [2024-06-27 20:32:16,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1626, PETRI_PLACES=201, PETRI_TRANSITIONS=163} [2024-06-27 20:32:16,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-27 20:32:16,937 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 163 transitions, 1626 flow [2024-06-27 20:32:16,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:16,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:16,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:16,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:32:16,938 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:16,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 621755530, now seen corresponding path program 3 times [2024-06-27 20:32:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:16,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050537210] [2024-06-27 20:32:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:16,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:17,702 INFO 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 20:32:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050537210] [2024-06-27 20:32:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050537210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:17,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:17,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650221636] [2024-06-27 20:32:17,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:17,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:17,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:17,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:17,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 163 transitions, 1626 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:17,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:17,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:17,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:18,099 INFO L124 PetriNetUnfolderBase]: 567/1078 cut-off events. [2024-06-27 20:32:18,099 INFO L125 PetriNetUnfolderBase]: For 130499/130499 co-relation queries the response was YES. [2024-06-27 20:32:18,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 1078 events. 567/1078 cut-off events. For 130499/130499 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5697 event pairs, 126 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 8578. Up to 842 conditions per place. [2024-06-27 20:32:18,107 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 53 changer transitions 0/177 dead transitions. [2024-06-27 20:32:18,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 177 transitions, 2024 flow [2024-06-27 20:32:18,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 20:32:18,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 20:32:18,109 INFO L175 Difference]: Start difference. First operand has 201 places, 163 transitions, 1626 flow. Second operand 10 states and 116 transitions. [2024-06-27 20:32:18,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 177 transitions, 2024 flow [2024-06-27 20:32:18,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 177 transitions, 1936 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:18,264 INFO L231 Difference]: Finished difference. Result has 195 places, 164 transitions, 1665 flow [2024-06-27 20:32:18,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1665, PETRI_PLACES=195, PETRI_TRANSITIONS=164} [2024-06-27 20:32:18,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-27 20:32:18,265 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 164 transitions, 1665 flow [2024-06-27 20:32:18,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:18,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:18,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:32:18,266 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:18,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:18,266 INFO L85 PathProgramCache]: Analyzing trace with hash 621764830, now seen corresponding path program 4 times [2024-06-27 20:32:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:18,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961497475] [2024-06-27 20:32:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:18,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:19,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:19,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961497475] [2024-06-27 20:32:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961497475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:19,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:19,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953112537] [2024-06-27 20:32:19,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:19,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:19,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:19,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:19,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 164 transitions, 1665 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:19,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:19,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:19,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:19,408 INFO L124 PetriNetUnfolderBase]: 571/1086 cut-off events. [2024-06-27 20:32:19,409 INFO L125 PetriNetUnfolderBase]: For 122460/122460 co-relation queries the response was YES. [2024-06-27 20:32:19,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8592 conditions, 1086 events. 571/1086 cut-off events. For 122460/122460 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5751 event pairs, 126 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 8503. Up to 808 conditions per place. [2024-06-27 20:32:19,418 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 55 changer transitions 0/178 dead transitions. [2024-06-27 20:32:19,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 178 transitions, 2063 flow [2024-06-27 20:32:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 20:32:19,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 20:32:19,420 INFO L175 Difference]: Start difference. First operand has 195 places, 164 transitions, 1665 flow. Second operand 10 states and 116 transitions. [2024-06-27 20:32:19,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 178 transitions, 2063 flow [2024-06-27 20:32:19,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 178 transitions, 1952 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:19,568 INFO L231 Difference]: Finished difference. Result has 197 places, 165 transitions, 1685 flow [2024-06-27 20:32:19,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1685, PETRI_PLACES=197, PETRI_TRANSITIONS=165} [2024-06-27 20:32:19,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-27 20:32:19,569 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 165 transitions, 1685 flow [2024-06-27 20:32:19,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:19,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:19,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:19,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:32:19,570 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:19,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -926434210, now seen corresponding path program 21 times [2024-06-27 20:32:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108675] [2024-06-27 20:32:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:20,459 INFO 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 20:32:20,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:20,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108675] [2024-06-27 20:32:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:20,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364612949] [2024-06-27 20:32:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:20,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:20,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:20,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:20,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 165 transitions, 1685 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:20,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:20,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:20,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:20,961 INFO L124 PetriNetUnfolderBase]: 551/1050 cut-off events. [2024-06-27 20:32:20,961 INFO L125 PetriNetUnfolderBase]: For 123198/123198 co-relation queries the response was YES. [2024-06-27 20:32:20,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 1050 events. 551/1050 cut-off events. For 123198/123198 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5545 event pairs, 112 based on Foata normal form. 16/1064 useless extension candidates. Maximal degree in co-relation 7523. Up to 736 conditions per place. [2024-06-27 20:32:20,969 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 45 changer transitions 20/184 dead transitions. [2024-06-27 20:32:20,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 184 transitions, 2115 flow [2024-06-27 20:32:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:32:20,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:32:20,970 INFO L175 Difference]: Start difference. First operand has 197 places, 165 transitions, 1685 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:32:20,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 184 transitions, 2115 flow [2024-06-27 20:32:21,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 1998 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:21,093 INFO L231 Difference]: Finished difference. Result has 200 places, 155 transitions, 1547 flow [2024-06-27 20:32:21,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1547, PETRI_PLACES=200, PETRI_TRANSITIONS=155} [2024-06-27 20:32:21,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-27 20:32:21,094 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 155 transitions, 1547 flow [2024-06-27 20:32:21,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:21,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:21,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:32:21,094 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:21,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash 420398874, now seen corresponding path program 22 times [2024-06-27 20:32:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:21,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533517743] [2024-06-27 20:32:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533517743] [2024-06-27 20:32:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533517743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:22,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:22,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113294848] [2024-06-27 20:32:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:22,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:22,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:22,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:22,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 155 transitions, 1547 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:22,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:22,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:22,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:22,643 INFO L124 PetriNetUnfolderBase]: 517/1000 cut-off events. [2024-06-27 20:32:22,643 INFO L125 PetriNetUnfolderBase]: For 127005/127005 co-relation queries the response was YES. [2024-06-27 20:32:22,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7334 conditions, 1000 events. 517/1000 cut-off events. For 127005/127005 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5270 event pairs, 111 based on Foata normal form. 16/1014 useless extension candidates. Maximal degree in co-relation 7243. Up to 689 conditions per place. [2024-06-27 20:32:22,651 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 113 selfloop transitions, 41 changer transitions 18/174 dead transitions. [2024-06-27 20:32:22,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 174 transitions, 1957 flow [2024-06-27 20:32:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:32:22,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:32:22,652 INFO L175 Difference]: Start difference. First operand has 200 places, 155 transitions, 1547 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:32:22,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 174 transitions, 1957 flow [2024-06-27 20:32:22,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 174 transitions, 1857 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:22,804 INFO L231 Difference]: Finished difference. Result has 193 places, 147 transitions, 1442 flow [2024-06-27 20:32:22,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1442, PETRI_PLACES=193, PETRI_TRANSITIONS=147} [2024-06-27 20:32:22,804 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-27 20:32:22,805 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 147 transitions, 1442 flow [2024-06-27 20:32:22,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:22,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:22,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:22,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:32:22,805 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:22,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 414834684, now seen corresponding path program 23 times [2024-06-27 20:32:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:22,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915107499] [2024-06-27 20:32:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:23,627 INFO 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 20:32:23,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:23,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915107499] [2024-06-27 20:32:23,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915107499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:23,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:23,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186119044] [2024-06-27 20:32:23,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:23,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:23,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:23,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:23,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 147 transitions, 1442 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:23,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:23,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:23,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:24,162 INFO L124 PetriNetUnfolderBase]: 463/902 cut-off events. [2024-06-27 20:32:24,162 INFO L125 PetriNetUnfolderBase]: For 101324/101324 co-relation queries the response was YES. [2024-06-27 20:32:24,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 902 events. 463/902 cut-off events. For 101324/101324 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4632 event pairs, 96 based on Foata normal form. 20/920 useless extension candidates. Maximal degree in co-relation 5989. Up to 597 conditions per place. [2024-06-27 20:32:24,167 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 36 changer transitions 18/166 dead transitions. [2024-06-27 20:32:24,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 166 transitions, 1834 flow [2024-06-27 20:32:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 20:32:24,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:32:24,168 INFO L175 Difference]: Start difference. First operand has 193 places, 147 transitions, 1442 flow. Second operand 12 states and 136 transitions. [2024-06-27 20:32:24,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 166 transitions, 1834 flow [2024-06-27 20:32:24,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 166 transitions, 1742 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:24,266 INFO L231 Difference]: Finished difference. Result has 190 places, 138 transitions, 1334 flow [2024-06-27 20:32:24,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1334, PETRI_PLACES=190, PETRI_TRANSITIONS=138} [2024-06-27 20:32:24,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-27 20:32:24,267 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 138 transitions, 1334 flow [2024-06-27 20:32:24,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:24,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:24,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:24,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:32:24,267 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:24,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash 420191484, now seen corresponding path program 24 times [2024-06-27 20:32:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310516328] [2024-06-27 20:32:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:25,310 INFO 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 20:32:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310516328] [2024-06-27 20:32:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310516328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:25,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:25,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:25,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894049142] [2024-06-27 20:32:25,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:25,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:25,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:25,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:25,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:25,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:25,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 138 transitions, 1334 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:25,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:25,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:25,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:25,731 INFO L124 PetriNetUnfolderBase]: 401/780 cut-off events. [2024-06-27 20:32:25,731 INFO L125 PetriNetUnfolderBase]: For 65870/65870 co-relation queries the response was YES. [2024-06-27 20:32:25,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5104 conditions, 780 events. 401/780 cut-off events. For 65870/65870 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3822 event pairs, 70 based on Foata normal form. 8/786 useless extension candidates. Maximal degree in co-relation 5017. Up to 541 conditions per place. [2024-06-27 20:32:25,737 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 29 changer transitions 18/155 dead transitions. [2024-06-27 20:32:25,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 155 transitions, 1694 flow [2024-06-27 20:32:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:32:25,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:32:25,738 INFO L175 Difference]: Start difference. First operand has 190 places, 138 transitions, 1334 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:32:25,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 155 transitions, 1694 flow [2024-06-27 20:32:25,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 155 transitions, 1614 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:32:25,827 INFO L231 Difference]: Finished difference. Result has 181 places, 130 transitions, 1235 flow [2024-06-27 20:32:25,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1235, PETRI_PLACES=181, PETRI_TRANSITIONS=130} [2024-06-27 20:32:25,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-27 20:32:25,839 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 130 transitions, 1235 flow [2024-06-27 20:32:25,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:25,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:25,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:25,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:32:25,840 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:25,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1152534976, now seen corresponding path program 5 times [2024-06-27 20:32:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:25,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613288890] [2024-06-27 20:32:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:26,647 INFO 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 20:32:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613288890] [2024-06-27 20:32:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613288890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810043184] [2024-06-27 20:32:26,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:26,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:26,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 130 transitions, 1235 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:26,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:26,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:27,110 INFO L124 PetriNetUnfolderBase]: 396/765 cut-off events. [2024-06-27 20:32:27,111 INFO L125 PetriNetUnfolderBase]: For 59422/59422 co-relation queries the response was YES. [2024-06-27 20:32:27,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 765 events. 396/765 cut-off events. For 59422/59422 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3722 event pairs, 104 based on Foata normal form. 4/767 useless extension candidates. Maximal degree in co-relation 5077. Up to 674 conditions per place. [2024-06-27 20:32:27,116 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 24 changer transitions 0/147 dead transitions. [2024-06-27 20:32:27,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 147 transitions, 1707 flow [2024-06-27 20:32:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:32:27,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:32:27,117 INFO L175 Difference]: Start difference. First operand has 181 places, 130 transitions, 1235 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:32:27,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 147 transitions, 1707 flow [2024-06-27 20:32:27,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 1603 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:27,202 INFO L231 Difference]: Finished difference. Result has 170 places, 134 transitions, 1242 flow [2024-06-27 20:32:27,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1242, PETRI_PLACES=170, PETRI_TRANSITIONS=134} [2024-06-27 20:32:27,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-27 20:32:27,203 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 134 transitions, 1242 flow [2024-06-27 20:32:27,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:27,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:27,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:27,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 20:32:27,203 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:27,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:27,204 INFO L85 PathProgramCache]: Analyzing trace with hash 609130646, now seen corresponding path program 6 times [2024-06-27 20:32:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:27,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802682192] [2024-06-27 20:32:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:27,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:28,197 INFO 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 20:32:28,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802682192] [2024-06-27 20:32:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802682192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:28,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:28,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070481308] [2024-06-27 20:32:28,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:28,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:28,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:28,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 134 transitions, 1242 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:28,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:28,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:28,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:28,678 INFO L124 PetriNetUnfolderBase]: 436/849 cut-off events. [2024-06-27 20:32:28,679 INFO L125 PetriNetUnfolderBase]: For 68256/68256 co-relation queries the response was YES. [2024-06-27 20:32:28,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 849 events. 436/849 cut-off events. For 68256/68256 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4291 event pairs, 114 based on Foata normal form. 18/865 useless extension candidates. Maximal degree in co-relation 5246. Up to 707 conditions per place. [2024-06-27 20:32:28,685 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 21 changer transitions 16/158 dead transitions. [2024-06-27 20:32:28,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 158 transitions, 1683 flow [2024-06-27 20:32:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:32:28,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:32:28,686 INFO L175 Difference]: Start difference. First operand has 170 places, 134 transitions, 1242 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:32:28,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 158 transitions, 1683 flow [2024-06-27 20:32:28,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 158 transitions, 1640 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:32:28,770 INFO L231 Difference]: Finished difference. Result has 176 places, 133 transitions, 1243 flow [2024-06-27 20:32:28,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1243, PETRI_PLACES=176, PETRI_TRANSITIONS=133} [2024-06-27 20:32:28,770 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 20:32:28,770 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 133 transitions, 1243 flow [2024-06-27 20:32:28,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:28,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:28,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:28,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 20:32:28,771 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:28,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash 651525052, now seen corresponding path program 7 times [2024-06-27 20:32:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45531694] [2024-06-27 20:32:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:29,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45531694] [2024-06-27 20:32:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45531694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:29,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:29,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408826445] [2024-06-27 20:32:29,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:29,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:29,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:29,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 133 transitions, 1243 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:29,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:29,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:29,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:29,997 INFO L124 PetriNetUnfolderBase]: 398/771 cut-off events. [2024-06-27 20:32:29,997 INFO L125 PetriNetUnfolderBase]: For 50312/50312 co-relation queries the response was YES. [2024-06-27 20:32:30,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 771 events. 398/771 cut-off events. For 50312/50312 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3759 event pairs, 100 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 5003. Up to 685 conditions per place. [2024-06-27 20:32:30,003 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 114 selfloop transitions, 31 changer transitions 0/147 dead transitions. [2024-06-27 20:32:30,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 147 transitions, 1581 flow [2024-06-27 20:32:30,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 20:32:30,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 20:32:30,004 INFO L175 Difference]: Start difference. First operand has 176 places, 133 transitions, 1243 flow. Second operand 10 states and 114 transitions. [2024-06-27 20:32:30,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 147 transitions, 1581 flow [2024-06-27 20:32:30,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 147 transitions, 1518 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:30,096 INFO L231 Difference]: Finished difference. Result has 174 places, 134 transitions, 1262 flow [2024-06-27 20:32:30,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1262, PETRI_PLACES=174, PETRI_TRANSITIONS=134} [2024-06-27 20:32:30,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-27 20:32:30,097 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 134 transitions, 1262 flow [2024-06-27 20:32:30,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:30,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:30,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:30,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 20:32:30,097 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:30,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2133914262, now seen corresponding path program 25 times [2024-06-27 20:32:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080992244] [2024-06-27 20:32:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:30,977 INFO 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 20:32:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080992244] [2024-06-27 20:32:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080992244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:30,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:30,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556894009] [2024-06-27 20:32:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:31,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:31,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 134 transitions, 1262 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:31,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:31,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:31,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:31,496 INFO L124 PetriNetUnfolderBase]: 439/858 cut-off events. [2024-06-27 20:32:31,497 INFO L125 PetriNetUnfolderBase]: For 70696/70696 co-relation queries the response was YES. [2024-06-27 20:32:31,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5865 conditions, 858 events. 439/858 cut-off events. For 70696/70696 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4370 event pairs, 109 based on Foata normal form. 8/864 useless extension candidates. Maximal degree in co-relation 5783. Up to 626 conditions per place. [2024-06-27 20:32:31,502 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 44 changer transitions 7/159 dead transitions. [2024-06-27 20:32:31,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 159 transitions, 1770 flow [2024-06-27 20:32:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 20:32:31,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-27 20:32:31,503 INFO L175 Difference]: Start difference. First operand has 174 places, 134 transitions, 1262 flow. Second operand 12 states and 143 transitions. [2024-06-27 20:32:31,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 159 transitions, 1770 flow [2024-06-27 20:32:31,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 159 transitions, 1700 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:31,585 INFO L231 Difference]: Finished difference. Result has 178 places, 132 transitions, 1266 flow [2024-06-27 20:32:31,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1266, PETRI_PLACES=178, PETRI_TRANSITIONS=132} [2024-06-27 20:32:31,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-27 20:32:31,586 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 132 transitions, 1266 flow [2024-06-27 20:32:31,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:31,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:31,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:31,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 20:32:31,586 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:31,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash 695351518, now seen corresponding path program 26 times [2024-06-27 20:32:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:31,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795088496] [2024-06-27 20:32:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:31,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:32,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795088496] [2024-06-27 20:32:32,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795088496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:32,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:32,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:32,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010166214] [2024-06-27 20:32:32,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:32,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:32,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:32,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:32,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:32,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:32,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 132 transitions, 1266 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:32,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:32,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:32,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:32,789 INFO L124 PetriNetUnfolderBase]: 445/876 cut-off events. [2024-06-27 20:32:32,790 INFO L125 PetriNetUnfolderBase]: For 84223/84223 co-relation queries the response was YES. [2024-06-27 20:32:32,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5960 conditions, 876 events. 445/876 cut-off events. For 84223/84223 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4509 event pairs, 129 based on Foata normal form. 16/890 useless extension candidates. Maximal degree in co-relation 5877. Up to 716 conditions per place. [2024-06-27 20:32:32,795 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 27 changer transitions 16/151 dead transitions. [2024-06-27 20:32:32,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 151 transitions, 1630 flow [2024-06-27 20:32:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:32:32,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:32:32,796 INFO L175 Difference]: Start difference. First operand has 178 places, 132 transitions, 1266 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:32:32,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 151 transitions, 1630 flow [2024-06-27 20:32:32,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 151 transitions, 1542 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:32,869 INFO L231 Difference]: Finished difference. Result has 176 places, 126 transitions, 1176 flow [2024-06-27 20:32:32,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1176, PETRI_PLACES=176, PETRI_TRANSITIONS=126} [2024-06-27 20:32:32,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 20:32:32,869 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 126 transitions, 1176 flow [2024-06-27 20:32:32,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:32,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:32,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:32,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 20:32:32,871 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:32,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 889298864, now seen corresponding path program 8 times [2024-06-27 20:32:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610647407] [2024-06-27 20:32:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:33,781 INFO 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 20:32:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610647407] [2024-06-27 20:32:33,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610647407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:33,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:33,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:33,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145467550] [2024-06-27 20:32:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:33,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:33,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 126 transitions, 1176 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:33,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:33,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:33,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:34,222 INFO L124 PetriNetUnfolderBase]: 407/798 cut-off events. [2024-06-27 20:32:34,223 INFO L125 PetriNetUnfolderBase]: For 63067/63067 co-relation queries the response was YES. [2024-06-27 20:32:34,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5617 conditions, 798 events. 407/798 cut-off events. For 63067/63067 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3963 event pairs, 121 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 5535. Up to 718 conditions per place. [2024-06-27 20:32:34,228 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 112 selfloop transitions, 27 changer transitions 0/141 dead transitions. [2024-06-27 20:32:34,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 141 transitions, 1508 flow [2024-06-27 20:32:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 20:32:34,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 20:32:34,229 INFO L175 Difference]: Start difference. First operand has 176 places, 126 transitions, 1176 flow. Second operand 10 states and 117 transitions. [2024-06-27 20:32:34,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 141 transitions, 1508 flow [2024-06-27 20:32:34,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 141 transitions, 1444 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:34,304 INFO L231 Difference]: Finished difference. Result has 170 places, 127 transitions, 1188 flow [2024-06-27 20:32:34,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1188, PETRI_PLACES=170, PETRI_TRANSITIONS=127} [2024-06-27 20:32:34,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-27 20:32:34,304 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 127 transitions, 1188 flow [2024-06-27 20:32:34,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:34,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:34,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:34,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 20:32:34,305 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:34,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1714404884, now seen corresponding path program 9 times [2024-06-27 20:32:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:34,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302633934] [2024-06-27 20:32:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:35,117 INFO 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 20:32:35,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302633934] [2024-06-27 20:32:35,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302633934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:35,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:35,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198287949] [2024-06-27 20:32:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:35,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:35,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:35,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 127 transitions, 1188 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:35,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:35,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:35,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:35,479 INFO L124 PetriNetUnfolderBase]: 411/806 cut-off events. [2024-06-27 20:32:35,479 INFO L125 PetriNetUnfolderBase]: For 58355/58355 co-relation queries the response was YES. [2024-06-27 20:32:35,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5567 conditions, 806 events. 411/806 cut-off events. For 58355/58355 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4032 event pairs, 125 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 5487. Up to 761 conditions per place. [2024-06-27 20:32:35,484 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 17 changer transitions 0/140 dead transitions. [2024-06-27 20:32:35,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 140 transitions, 1510 flow [2024-06-27 20:32:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:32:35,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:32:35,486 INFO L175 Difference]: Start difference. First operand has 170 places, 127 transitions, 1188 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:32:35,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 140 transitions, 1510 flow [2024-06-27 20:32:35,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 140 transitions, 1448 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:35,554 INFO L231 Difference]: Finished difference. Result has 172 places, 128 transitions, 1182 flow [2024-06-27 20:32:35,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1182, PETRI_PLACES=172, PETRI_TRANSITIONS=128} [2024-06-27 20:32:35,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-27 20:32:35,555 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 128 transitions, 1182 flow [2024-06-27 20:32:35,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:35,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:35,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 20:32:35,555 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:35,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2133919842, now seen corresponding path program 27 times [2024-06-27 20:32:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476930144] [2024-06-27 20:32:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:36,270 INFO 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 20:32:36,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:36,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476930144] [2024-06-27 20:32:36,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476930144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:36,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:36,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:36,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870536986] [2024-06-27 20:32:36,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:36,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:36,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:36,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:36,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:36,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 128 transitions, 1182 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:36,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:36,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:36,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:36,738 INFO L124 PetriNetUnfolderBase]: 398/783 cut-off events. [2024-06-27 20:32:36,738 INFO L125 PetriNetUnfolderBase]: For 58159/58159 co-relation queries the response was YES. [2024-06-27 20:32:36,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5018 conditions, 783 events. 398/783 cut-off events. For 58159/58159 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3913 event pairs, 100 based on Foata normal form. 10/791 useless extension candidates. Maximal degree in co-relation 4937. Up to 632 conditions per place. [2024-06-27 20:32:36,744 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 36 changer transitions 15/147 dead transitions. [2024-06-27 20:32:36,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 147 transitions, 1536 flow [2024-06-27 20:32:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 20:32:36,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 20:32:36,745 INFO L175 Difference]: Start difference. First operand has 172 places, 128 transitions, 1182 flow. Second operand 12 states and 134 transitions. [2024-06-27 20:32:36,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 147 transitions, 1536 flow [2024-06-27 20:32:36,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 147 transitions, 1477 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:36,835 INFO L231 Difference]: Finished difference. Result has 175 places, 123 transitions, 1153 flow [2024-06-27 20:32:36,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1153, PETRI_PLACES=175, PETRI_TRANSITIONS=123} [2024-06-27 20:32:36,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-27 20:32:36,836 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 123 transitions, 1153 flow [2024-06-27 20:32:36,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:36,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:36,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:36,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 20:32:36,836 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:36,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 689781748, now seen corresponding path program 28 times [2024-06-27 20:32:36,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:36,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916098] [2024-06-27 20:32:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:37,500 INFO 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 20:32:37,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:37,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916098] [2024-06-27 20:32:37,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:37,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:37,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146749582] [2024-06-27 20:32:37,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:37,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:37,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:37,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 123 transitions, 1153 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:37,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:37,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:37,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:37,880 INFO L124 PetriNetUnfolderBase]: 413/816 cut-off events. [2024-06-27 20:32:37,880 INFO L125 PetriNetUnfolderBase]: For 70490/70490 co-relation queries the response was YES. [2024-06-27 20:32:37,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5622 conditions, 816 events. 413/816 cut-off events. For 70490/70490 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4110 event pairs, 109 based on Foata normal form. 8/822 useless extension candidates. Maximal degree in co-relation 5541. Up to 551 conditions per place. [2024-06-27 20:32:37,886 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 83 selfloop transitions, 56 changer transitions 7/148 dead transitions. [2024-06-27 20:32:37,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 148 transitions, 1639 flow [2024-06-27 20:32:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 20:32:37,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-27 20:32:37,887 INFO L175 Difference]: Start difference. First operand has 175 places, 123 transitions, 1153 flow. Second operand 12 states and 143 transitions. [2024-06-27 20:32:37,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 148 transitions, 1639 flow [2024-06-27 20:32:37,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 148 transitions, 1551 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:37,961 INFO L231 Difference]: Finished difference. Result has 168 places, 121 transitions, 1171 flow [2024-06-27 20:32:37,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1171, PETRI_PLACES=168, PETRI_TRANSITIONS=121} [2024-06-27 20:32:37,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-27 20:32:37,962 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 121 transitions, 1171 flow [2024-06-27 20:32:37,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:37,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:37,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:37,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 20:32:37,962 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:37,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash 845249136, now seen corresponding path program 29 times [2024-06-27 20:32:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:37,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864488165] [2024-06-27 20:32:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:37,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:38,633 INFO 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 20:32:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864488165] [2024-06-27 20:32:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864488165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:38,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:38,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640520638] [2024-06-27 20:32:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:38,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:38,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 121 transitions, 1171 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:38,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:38,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:38,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:39,044 INFO L124 PetriNetUnfolderBase]: 458/911 cut-off events. [2024-06-27 20:32:39,044 INFO L125 PetriNetUnfolderBase]: For 83221/83221 co-relation queries the response was YES. [2024-06-27 20:32:39,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6685 conditions, 911 events. 458/911 cut-off events. For 83221/83221 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4789 event pairs, 150 based on Foata normal form. 8/917 useless extension candidates. Maximal degree in co-relation 6607. Up to 642 conditions per place. [2024-06-27 20:32:39,050 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 29 changer transitions 7/146 dead transitions. [2024-06-27 20:32:39,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 146 transitions, 1663 flow [2024-06-27 20:32:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:32:39,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 20:32:39,051 INFO L175 Difference]: Start difference. First operand has 168 places, 121 transitions, 1171 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:32:39,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 146 transitions, 1663 flow [2024-06-27 20:32:39,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 146 transitions, 1545 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:39,136 INFO L231 Difference]: Finished difference. Result has 166 places, 119 transitions, 1101 flow [2024-06-27 20:32:39,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1101, PETRI_PLACES=166, PETRI_TRANSITIONS=119} [2024-06-27 20:32:39,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-27 20:32:39,137 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 119 transitions, 1101 flow [2024-06-27 20:32:39,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:39,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:39,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:39,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 20:32:39,137 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:39,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:39,138 INFO L85 PathProgramCache]: Analyzing trace with hash 845456526, now seen corresponding path program 30 times [2024-06-27 20:32:39,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:39,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430756788] [2024-06-27 20:32:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:39,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:39,858 INFO 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 20:32:39,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430756788] [2024-06-27 20:32:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430756788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:39,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339786911] [2024-06-27 20:32:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:39,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:39,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:39,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:39,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:39,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 119 transitions, 1101 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:39,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:39,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:39,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:40,229 INFO L124 PetriNetUnfolderBase]: 464/929 cut-off events. [2024-06-27 20:32:40,230 INFO L125 PetriNetUnfolderBase]: For 88260/88260 co-relation queries the response was YES. [2024-06-27 20:32:40,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 929 events. 464/929 cut-off events. For 88260/88260 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4961 event pairs, 168 based on Foata normal form. 16/943 useless extension candidates. Maximal degree in co-relation 6515. Up to 778 conditions per place. [2024-06-27 20:32:40,235 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 21 changer transitions 16/139 dead transitions. [2024-06-27 20:32:40,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 139 transitions, 1445 flow [2024-06-27 20:32:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:32:40,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:32:40,237 INFO L175 Difference]: Start difference. First operand has 166 places, 119 transitions, 1101 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:32:40,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 139 transitions, 1445 flow [2024-06-27 20:32:40,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 139 transitions, 1391 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:40,323 INFO L231 Difference]: Finished difference. Result has 165 places, 113 transitions, 1033 flow [2024-06-27 20:32:40,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1033, PETRI_PLACES=165, PETRI_TRANSITIONS=113} [2024-06-27 20:32:40,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-27 20:32:40,323 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 113 transitions, 1033 flow [2024-06-27 20:32:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:40,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:40,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 20:32:40,324 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:40,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 689787328, now seen corresponding path program 31 times [2024-06-27 20:32:40,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522734528] [2024-06-27 20:32:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:41,085 INFO 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 20:32:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522734528] [2024-06-27 20:32:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522734528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:41,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:41,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587054069] [2024-06-27 20:32:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:41,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:41,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:41,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:41,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:41,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 113 transitions, 1033 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:41,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:41,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:41,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:41,569 INFO L124 PetriNetUnfolderBase]: 409/820 cut-off events. [2024-06-27 20:32:41,570 INFO L125 PetriNetUnfolderBase]: For 67777/67777 co-relation queries the response was YES. [2024-06-27 20:32:41,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 820 events. 409/820 cut-off events. For 67777/67777 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4188 event pairs, 139 based on Foata normal form. 10/828 useless extension candidates. Maximal degree in co-relation 5617. Up to 667 conditions per place. [2024-06-27 20:32:41,575 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 33 changer transitions 13/132 dead transitions. [2024-06-27 20:32:41,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 132 transitions, 1359 flow [2024-06-27 20:32:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:32:41,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:32:41,582 INFO L175 Difference]: Start difference. First operand has 165 places, 113 transitions, 1033 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:32:41,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 132 transitions, 1359 flow [2024-06-27 20:32:41,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 132 transitions, 1309 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:41,645 INFO L231 Difference]: Finished difference. Result has 160 places, 109 transitions, 1019 flow [2024-06-27 20:32:41,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1019, PETRI_PLACES=160, PETRI_TRANSITIONS=109} [2024-06-27 20:32:41,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-27 20:32:41,645 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 109 transitions, 1019 flow [2024-06-27 20:32:41,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:41,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:41,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:41,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 20:32:41,646 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:41,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1152544276, now seen corresponding path program 10 times [2024-06-27 20:32:41,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:41,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751928451] [2024-06-27 20:32:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:41,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:42,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751928451] [2024-06-27 20:32:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751928451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:42,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:42,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:42,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352012032] [2024-06-27 20:32:42,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:42,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:42,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:42,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:42,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 109 transitions, 1019 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:42,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:42,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:42,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:42,925 INFO L124 PetriNetUnfolderBase]: 378/759 cut-off events. [2024-06-27 20:32:42,925 INFO L125 PetriNetUnfolderBase]: For 52541/52541 co-relation queries the response was YES. [2024-06-27 20:32:42,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 759 events. 378/759 cut-off events. For 52541/52541 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3795 event pairs, 139 based on Foata normal form. 4/761 useless extension candidates. Maximal degree in co-relation 5133. Up to 702 conditions per place. [2024-06-27 20:32:42,931 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 96 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2024-06-27 20:32:42,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 121 transitions, 1287 flow [2024-06-27 20:32:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:32:42,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:32:42,932 INFO L175 Difference]: Start difference. First operand has 160 places, 109 transitions, 1019 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:32:42,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 121 transitions, 1287 flow [2024-06-27 20:32:42,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 121 transitions, 1205 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:42,984 INFO L231 Difference]: Finished difference. Result has 154 places, 109 transitions, 989 flow [2024-06-27 20:32:42,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=989, PETRI_PLACES=154, PETRI_TRANSITIONS=109} [2024-06-27 20:32:42,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-27 20:32:42,989 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 109 transitions, 989 flow [2024-06-27 20:32:42,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:42,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:42,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 20:32:43,004 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:43,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1722029520, now seen corresponding path program 32 times [2024-06-27 20:32:43,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:43,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25003124] [2024-06-27 20:32:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:43,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25003124] [2024-06-27 20:32:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25003124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:43,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299094011] [2024-06-27 20:32:43,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:43,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:43,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 109 transitions, 989 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:43,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:43,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:43,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:44,223 INFO L124 PetriNetUnfolderBase]: 434/879 cut-off events. [2024-06-27 20:32:44,223 INFO L125 PetriNetUnfolderBase]: For 65123/65123 co-relation queries the response was YES. [2024-06-27 20:32:44,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6071 conditions, 879 events. 434/879 cut-off events. For 65123/65123 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4624 event pairs, 165 based on Foata normal form. 8/885 useless extension candidates. Maximal degree in co-relation 5999. Up to 671 conditions per place. [2024-06-27 20:32:44,230 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 20 changer transitions 7/132 dead transitions. [2024-06-27 20:32:44,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 132 transitions, 1419 flow [2024-06-27 20:32:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:32:44,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:32:44,231 INFO L175 Difference]: Start difference. First operand has 154 places, 109 transitions, 989 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:32:44,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 132 transitions, 1419 flow [2024-06-27 20:32:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 132 transitions, 1370 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:44,292 INFO L231 Difference]: Finished difference. Result has 156 places, 107 transitions, 965 flow [2024-06-27 20:32:44,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=965, PETRI_PLACES=156, PETRI_TRANSITIONS=107} [2024-06-27 20:32:44,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-27 20:32:44,293 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 107 transitions, 965 flow [2024-06-27 20:32:44,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:44,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:44,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 20:32:44,294 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:44,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash 689637598, now seen corresponding path program 33 times [2024-06-27 20:32:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590099013] [2024-06-27 20:32:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:45,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:45,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590099013] [2024-06-27 20:32:45,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590099013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:45,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:45,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557110201] [2024-06-27 20:32:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:45,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:45,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:45,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:45,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 107 transitions, 965 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:45,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:45,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:45,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:45,589 INFO L124 PetriNetUnfolderBase]: 443/902 cut-off events. [2024-06-27 20:32:45,589 INFO L125 PetriNetUnfolderBase]: For 73548/73548 co-relation queries the response was YES. [2024-06-27 20:32:45,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6426 conditions, 902 events. 443/902 cut-off events. For 73548/73548 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4787 event pairs, 154 based on Foata normal form. 8/908 useless extension candidates. Maximal degree in co-relation 6353. Up to 460 conditions per place. [2024-06-27 20:32:45,595 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 43 changer transitions 12/131 dead transitions. [2024-06-27 20:32:45,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 131 transitions, 1397 flow [2024-06-27 20:32:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:45,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 20:32:45,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 20:32:45,596 INFO L175 Difference]: Start difference. First operand has 156 places, 107 transitions, 965 flow. Second operand 11 states and 131 transitions. [2024-06-27 20:32:45,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 131 transitions, 1397 flow [2024-06-27 20:32:45,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 131 transitions, 1354 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:45,651 INFO L231 Difference]: Finished difference. Result has 155 places, 102 transitions, 975 flow [2024-06-27 20:32:45,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=975, PETRI_PLACES=155, PETRI_TRANSITIONS=102} [2024-06-27 20:32:45,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-27 20:32:45,652 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 102 transitions, 975 flow [2024-06-27 20:32:45,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:45,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:45,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:45,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 20:32:45,652 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:45,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:45,653 INFO L85 PathProgramCache]: Analyzing trace with hash 889089118, now seen corresponding path program 34 times [2024-06-27 20:32:45,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:45,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440132474] [2024-06-27 20:32:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:45,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:46,556 INFO 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 20:32:46,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:46,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440132474] [2024-06-27 20:32:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440132474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:46,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688955183] [2024-06-27 20:32:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:46,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:46,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:46,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:46,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 102 transitions, 975 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:46,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:46,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:46,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:47,014 INFO L124 PetriNetUnfolderBase]: 435/886 cut-off events. [2024-06-27 20:32:47,014 INFO L125 PetriNetUnfolderBase]: For 72163/72163 co-relation queries the response was YES. [2024-06-27 20:32:47,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6363 conditions, 886 events. 435/886 cut-off events. For 72163/72163 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4736 event pairs, 178 based on Foata normal form. 10/894 useless extension candidates. Maximal degree in co-relation 6291. Up to 739 conditions per place. [2024-06-27 20:32:47,021 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 79 selfloop transitions, 29 changer transitions 13/123 dead transitions. [2024-06-27 20:32:47,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 123 transitions, 1289 flow [2024-06-27 20:32:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:32:47,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-27 20:32:47,022 INFO L175 Difference]: Start difference. First operand has 155 places, 102 transitions, 975 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:32:47,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 123 transitions, 1289 flow [2024-06-27 20:32:47,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 123 transitions, 1205 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:32:47,075 INFO L231 Difference]: Finished difference. Result has 149 places, 97 transitions, 902 flow [2024-06-27 20:32:47,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=902, PETRI_PLACES=149, PETRI_TRANSITIONS=97} [2024-06-27 20:32:47,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 20:32:47,076 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 97 transitions, 902 flow [2024-06-27 20:32:47,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:47,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:47,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:47,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 20:32:47,076 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:47,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash 896708174, now seen corresponding path program 11 times [2024-06-27 20:32:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:47,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96549815] [2024-06-27 20:32:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:47,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:47,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:47,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96549815] [2024-06-27 20:32:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96549815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:47,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:47,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:47,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175851] [2024-06-27 20:32:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:47,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:47,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:48,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:48,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 97 transitions, 902 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:48,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:48,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:48,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:48,314 INFO L124 PetriNetUnfolderBase]: 406/827 cut-off events. [2024-06-27 20:32:48,314 INFO L125 PetriNetUnfolderBase]: For 52171/52171 co-relation queries the response was YES. [2024-06-27 20:32:48,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5753 conditions, 827 events. 406/827 cut-off events. For 52171/52171 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4317 event pairs, 173 based on Foata normal form. 2/827 useless extension candidates. Maximal degree in co-relation 5685. Up to 762 conditions per place. [2024-06-27 20:32:48,319 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-27 20:32:48,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 111 transitions, 1170 flow [2024-06-27 20:32:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:32:48,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:32:48,320 INFO L175 Difference]: Start difference. First operand has 149 places, 97 transitions, 902 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:32:48,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 111 transitions, 1170 flow [2024-06-27 20:32:48,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 111 transitions, 1107 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:48,362 INFO L231 Difference]: Finished difference. Result has 143 places, 98 transitions, 901 flow [2024-06-27 20:32:48,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=901, PETRI_PLACES=143, PETRI_TRANSITIONS=98} [2024-06-27 20:32:48,363 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-27 20:32:48,363 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 98 transitions, 901 flow [2024-06-27 20:32:48,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:48,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:48,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:48,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 20:32:48,364 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:48,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1722023940, now seen corresponding path program 35 times [2024-06-27 20:32:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:48,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791736811] [2024-06-27 20:32:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:49,101 INFO 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 20:32:49,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:49,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791736811] [2024-06-27 20:32:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791736811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:49,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314152050] [2024-06-27 20:32:49,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:49,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:49,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:49,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 98 transitions, 901 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:49,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:49,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:49,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:49,480 INFO L124 PetriNetUnfolderBase]: 422/863 cut-off events. [2024-06-27 20:32:49,480 INFO L125 PetriNetUnfolderBase]: For 51797/51797 co-relation queries the response was YES. [2024-06-27 20:32:49,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5709 conditions, 863 events. 422/863 cut-off events. For 51797/51797 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4593 event pairs, 173 based on Foata normal form. 10/871 useless extension candidates. Maximal degree in co-relation 5643. Up to 728 conditions per place. [2024-06-27 20:32:49,486 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 31 changer transitions 13/118 dead transitions. [2024-06-27 20:32:49,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 118 transitions, 1201 flow [2024-06-27 20:32:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 20:32:49,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 20:32:49,487 INFO L175 Difference]: Start difference. First operand has 143 places, 98 transitions, 901 flow. Second operand 12 states and 134 transitions. [2024-06-27 20:32:49,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 118 transitions, 1201 flow [2024-06-27 20:32:49,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 118 transitions, 1151 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:49,528 INFO L231 Difference]: Finished difference. Result has 147 places, 93 transitions, 861 flow [2024-06-27 20:32:49,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=861, PETRI_PLACES=147, PETRI_TRANSITIONS=93} [2024-06-27 20:32:49,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 20:32:49,529 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 93 transitions, 861 flow [2024-06-27 20:32:49,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:49,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:49,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:49,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 20:32:49,529 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:49,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:49,530 INFO L85 PathProgramCache]: Analyzing trace with hash -822220878, now seen corresponding path program 12 times [2024-06-27 20:32:49,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:49,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949502176] [2024-06-27 20:32:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:49,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:50,450 INFO 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 20:32:50,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949502176] [2024-06-27 20:32:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949502176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501350883] [2024-06-27 20:32:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:50,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:50,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:50,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 93 transitions, 861 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:50,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:50,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:50,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:50,805 INFO L124 PetriNetUnfolderBase]: 400/817 cut-off events. [2024-06-27 20:32:50,805 INFO L125 PetriNetUnfolderBase]: For 49536/49536 co-relation queries the response was YES. [2024-06-27 20:32:50,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5616 conditions, 817 events. 400/817 cut-off events. For 49536/49536 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4275 event pairs, 177 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 5549. Up to 761 conditions per place. [2024-06-27 20:32:50,810 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-27 20:32:50,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 106 transitions, 1115 flow [2024-06-27 20:32:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:32:50,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:32:50,811 INFO L175 Difference]: Start difference. First operand has 147 places, 93 transitions, 861 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:32:50,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 106 transitions, 1115 flow [2024-06-27 20:32:50,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 106 transitions, 1040 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 20:32:50,855 INFO L231 Difference]: Finished difference. Result has 140 places, 94 transitions, 844 flow [2024-06-27 20:32:50,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=844, PETRI_PLACES=140, PETRI_TRANSITIONS=94} [2024-06-27 20:32:50,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-27 20:32:50,855 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 94 transitions, 844 flow [2024-06-27 20:32:50,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:50,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:50,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:50,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 20:32:50,856 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:50,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash 875154356, now seen corresponding path program 13 times [2024-06-27 20:32:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126702619] [2024-06-27 20:32:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:50,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:51,613 INFO 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 20:32:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126702619] [2024-06-27 20:32:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126702619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:51,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:51,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:51,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467555115] [2024-06-27 20:32:51,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:51,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:51,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:51,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 94 transitions, 844 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:51,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:51,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:51,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:51,994 INFO L124 PetriNetUnfolderBase]: 397/812 cut-off events. [2024-06-27 20:32:51,995 INFO L125 PetriNetUnfolderBase]: For 45623/45623 co-relation queries the response was YES. [2024-06-27 20:32:51,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5410 conditions, 812 events. 397/812 cut-off events. For 45623/45623 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4265 event pairs, 178 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 5345. Up to 765 conditions per place. [2024-06-27 20:32:52,000 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 88 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-27 20:32:52,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 106 transitions, 1078 flow [2024-06-27 20:32:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:32:52,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:32:52,001 INFO L175 Difference]: Start difference. First operand has 140 places, 94 transitions, 844 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:32:52,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 106 transitions, 1078 flow [2024-06-27 20:32:52,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 106 transitions, 1032 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:52,036 INFO L231 Difference]: Finished difference. Result has 142 places, 94 transitions, 834 flow [2024-06-27 20:32:52,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=834, PETRI_PLACES=142, PETRI_TRANSITIONS=94} [2024-06-27 20:32:52,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-27 20:32:52,036 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 94 transitions, 834 flow [2024-06-27 20:32:52,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:52,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:52,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:52,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 20:32:52,037 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:52,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash 896717474, now seen corresponding path program 14 times [2024-06-27 20:32:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:52,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131527724] [2024-06-27 20:32:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:52,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:52,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:52,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131527724] [2024-06-27 20:32:52,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131527724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:52,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:52,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:52,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491964760] [2024-06-27 20:32:52,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:52,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:52,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:52,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 94 transitions, 834 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:52,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:52,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:52,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:53,161 INFO L124 PetriNetUnfolderBase]: 394/807 cut-off events. [2024-06-27 20:32:53,162 INFO L125 PetriNetUnfolderBase]: For 46736/46736 co-relation queries the response was YES. [2024-06-27 20:32:53,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5353 conditions, 807 events. 394/807 cut-off events. For 46736/46736 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4244 event pairs, 173 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 5287. Up to 731 conditions per place. [2024-06-27 20:32:53,167 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-27 20:32:53,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 107 transitions, 1076 flow [2024-06-27 20:32:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:32:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:32:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:32:53,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:32:53,168 INFO L175 Difference]: Start difference. First operand has 142 places, 94 transitions, 834 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:32:53,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 107 transitions, 1076 flow [2024-06-27 20:32:53,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 107 transitions, 1036 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:53,208 INFO L231 Difference]: Finished difference. Result has 144 places, 94 transitions, 838 flow [2024-06-27 20:32:53,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=838, PETRI_PLACES=144, PETRI_TRANSITIONS=94} [2024-06-27 20:32:53,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 20:32:53,208 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 94 transitions, 838 flow [2024-06-27 20:32:53,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:53,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:53,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 20:32:53,209 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:53,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 896440768, now seen corresponding path program 36 times [2024-06-27 20:32:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814267780] [2024-06-27 20:32:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:54,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:54,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814267780] [2024-06-27 20:32:54,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814267780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:54,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:54,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182718576] [2024-06-27 20:32:54,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:54,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:54,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:54,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:54,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 94 transitions, 838 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:54,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:54,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:54,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:54,610 INFO L124 PetriNetUnfolderBase]: 381/784 cut-off events. [2024-06-27 20:32:54,610 INFO L125 PetriNetUnfolderBase]: For 47813/47813 co-relation queries the response was YES. [2024-06-27 20:32:54,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 784 events. 381/784 cut-off events. For 47813/47813 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4082 event pairs, 160 based on Foata normal form. 10/792 useless extension candidates. Maximal degree in co-relation 4909. Up to 678 conditions per place. [2024-06-27 20:32:54,615 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 82 selfloop transitions, 18 changer transitions 11/113 dead transitions. [2024-06-27 20:32:54,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 113 transitions, 1126 flow [2024-06-27 20:32:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 20:32:54,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:32:54,616 INFO L175 Difference]: Start difference. First operand has 144 places, 94 transitions, 838 flow. Second operand 12 states and 132 transitions. [2024-06-27 20:32:54,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 113 transitions, 1126 flow [2024-06-27 20:32:54,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 113 transitions, 1059 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:54,659 INFO L231 Difference]: Finished difference. Result has 147 places, 91 transitions, 773 flow [2024-06-27 20:32:54,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=773, PETRI_PLACES=147, PETRI_TRANSITIONS=91} [2024-06-27 20:32:54,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 20:32:54,660 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 91 transitions, 773 flow [2024-06-27 20:32:54,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:54,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:54,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:54,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 20:32:54,661 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:54,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1466510912, now seen corresponding path program 37 times [2024-06-27 20:32:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531523841] [2024-06-27 20:32:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:55,566 INFO 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 20:32:55,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531523841] [2024-06-27 20:32:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531523841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:55,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:55,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480056861] [2024-06-27 20:32:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:55,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:55,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:55,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 91 transitions, 773 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:55,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:55,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:55,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:56,035 INFO L124 PetriNetUnfolderBase]: 340/713 cut-off events. [2024-06-27 20:32:56,035 INFO L125 PetriNetUnfolderBase]: For 47201/47201 co-relation queries the response was YES. [2024-06-27 20:32:56,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 713 events. 340/713 cut-off events. For 47201/47201 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3657 event pairs, 139 based on Foata normal form. 24/735 useless extension candidates. Maximal degree in co-relation 3917. Up to 543 conditions per place. [2024-06-27 20:32:56,039 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 69 selfloop transitions, 16 changer transitions 22/109 dead transitions. [2024-06-27 20:32:56,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 109 transitions, 1049 flow [2024-06-27 20:32:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 20:32:56,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 20:32:56,040 INFO L175 Difference]: Start difference. First operand has 147 places, 91 transitions, 773 flow. Second operand 12 states and 130 transitions. [2024-06-27 20:32:56,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 109 transitions, 1049 flow [2024-06-27 20:32:56,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 109 transitions, 994 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:32:56,082 INFO L231 Difference]: Finished difference. Result has 144 places, 79 transitions, 655 flow [2024-06-27 20:32:56,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=655, PETRI_PLACES=144, PETRI_TRANSITIONS=79} [2024-06-27 20:32:56,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 20:32:56,082 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 79 transitions, 655 flow [2024-06-27 20:32:56,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:56,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:56,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 20:32:56,083 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:56,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash 616272550, now seen corresponding path program 38 times [2024-06-27 20:32:56,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:56,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510885766] [2024-06-27 20:32:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510885766] [2024-06-27 20:32:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510885766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819035392] [2024-06-27 20:32:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:57,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:57,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:57,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 79 transitions, 655 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:57,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:57,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:57,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:57,404 INFO L124 PetriNetUnfolderBase]: 252/541 cut-off events. [2024-06-27 20:32:57,404 INFO L125 PetriNetUnfolderBase]: For 27625/27625 co-relation queries the response was YES. [2024-06-27 20:32:57,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2728 conditions, 541 events. 252/541 cut-off events. For 27625/27625 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2531 event pairs, 99 based on Foata normal form. 16/555 useless extension candidates. Maximal degree in co-relation 2663. Up to 425 conditions per place. [2024-06-27 20:32:57,407 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 12 changer transitions 16/97 dead transitions. [2024-06-27 20:32:57,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 97 transitions, 905 flow [2024-06-27 20:32:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:32:57,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:32:57,408 INFO L175 Difference]: Start difference. First operand has 144 places, 79 transitions, 655 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:32:57,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 97 transitions, 905 flow [2024-06-27 20:32:57,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 97 transitions, 835 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-27 20:32:57,431 INFO L231 Difference]: Finished difference. Result has 134 places, 73 transitions, 560 flow [2024-06-27 20:32:57,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=560, PETRI_PLACES=134, PETRI_TRANSITIONS=73} [2024-06-27 20:32:57,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-27 20:32:57,435 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 73 transitions, 560 flow [2024-06-27 20:32:57,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:57,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:57,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 20:32:57,436 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:57,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2138846980, now seen corresponding path program 39 times [2024-06-27 20:32:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34816775] [2024-06-27 20:32:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:58,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34816775] [2024-06-27 20:32:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34816775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:58,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:58,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:58,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661707019] [2024-06-27 20:32:58,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:58,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:58,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:58,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:32:58,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 73 transitions, 560 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:58,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:58,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:32:58,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:58,922 INFO L124 PetriNetUnfolderBase]: 211/466 cut-off events. [2024-06-27 20:32:58,923 INFO L125 PetriNetUnfolderBase]: For 18429/18429 co-relation queries the response was YES. [2024-06-27 20:32:58,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 466 events. 211/466 cut-off events. For 18429/18429 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2099 event pairs, 55 based on Foata normal form. 16/480 useless extension candidates. Maximal degree in co-relation 1934. Up to 232 conditions per place. [2024-06-27 20:32:58,934 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 61 selfloop transitions, 20 changer transitions 12/95 dead transitions. [2024-06-27 20:32:58,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 95 transitions, 818 flow [2024-06-27 20:32:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:32:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:32:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 20:32:58,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:32:58,937 INFO L175 Difference]: Start difference. First operand has 134 places, 73 transitions, 560 flow. Second operand 12 states and 132 transitions. [2024-06-27 20:32:58,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 95 transitions, 818 flow [2024-06-27 20:32:58,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 95 transitions, 784 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:58,952 INFO L231 Difference]: Finished difference. Result has 126 places, 69 transitions, 541 flow [2024-06-27 20:32:58,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=541, PETRI_PLACES=126, PETRI_TRANSITIONS=69} [2024-06-27 20:32:58,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-27 20:32:58,952 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 69 transitions, 541 flow [2024-06-27 20:32:58,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:58,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:58,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:32:58,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 20:32:58,953 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:58,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2028462993, now seen corresponding path program 1 times [2024-06-27 20:32:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625236357] [2024-06-27 20:32:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:00,059 INFO 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 20:33:00,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:00,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625236357] [2024-06-27 20:33:00,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625236357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:00,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:00,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:00,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435927001] [2024-06-27 20:33:00,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:00,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:00,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:00,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:00,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:00,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:33:00,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 69 transitions, 541 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:00,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:00,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:33:00,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:00,418 INFO L124 PetriNetUnfolderBase]: 174/391 cut-off events. [2024-06-27 20:33:00,418 INFO L125 PetriNetUnfolderBase]: For 10234/10234 co-relation queries the response was YES. [2024-06-27 20:33:00,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 391 events. 174/391 cut-off events. For 10234/10234 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1695 event pairs, 46 based on Foata normal form. 6/395 useless extension candidates. Maximal degree in co-relation 1680. Up to 216 conditions per place. [2024-06-27 20:33:00,420 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 52 selfloop transitions, 24 changer transitions 7/85 dead transitions. [2024-06-27 20:33:00,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 85 transitions, 749 flow [2024-06-27 20:33:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:33:00,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:33:00,436 INFO L175 Difference]: Start difference. First operand has 126 places, 69 transitions, 541 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:33:00,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 85 transitions, 749 flow [2024-06-27 20:33:00,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 85 transitions, 665 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-27 20:33:00,460 INFO L231 Difference]: Finished difference. Result has 120 places, 66 transitions, 491 flow [2024-06-27 20:33:00,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=491, PETRI_PLACES=120, PETRI_TRANSITIONS=66} [2024-06-27 20:33:00,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-27 20:33:00,461 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 66 transitions, 491 flow [2024-06-27 20:33:00,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:00,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:00,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:00,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 20:33:00,462 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:00,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2094841379, now seen corresponding path program 2 times [2024-06-27 20:33:00,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793182528] [2024-06-27 20:33:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:01,779 INFO 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 20:33:01,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:01,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793182528] [2024-06-27 20:33:01,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793182528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:01,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:01,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439715665] [2024-06-27 20:33:01,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:01,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:01,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:01,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:33:01,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 66 transitions, 491 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:01,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:01,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:33:01,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:02,085 INFO L124 PetriNetUnfolderBase]: 157/351 cut-off events. [2024-06-27 20:33:02,085 INFO L125 PetriNetUnfolderBase]: For 9572/9572 co-relation queries the response was YES. [2024-06-27 20:33:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 351 events. 157/351 cut-off events. For 9572/9572 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1447 event pairs, 45 based on Foata normal form. 6/355 useless extension candidates. Maximal degree in co-relation 1476. Up to 181 conditions per place. [2024-06-27 20:33:02,087 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 34 selfloop transitions, 10 changer transitions 36/82 dead transitions. [2024-06-27 20:33:02,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 82 transitions, 689 flow [2024-06-27 20:33:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:33:02,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:33:02,088 INFO L175 Difference]: Start difference. First operand has 120 places, 66 transitions, 491 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:33:02,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 82 transitions, 689 flow [2024-06-27 20:33:02,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 82 transitions, 606 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 20:33:02,097 INFO L231 Difference]: Finished difference. Result has 116 places, 44 transitions, 305 flow [2024-06-27 20:33:02,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=305, PETRI_PLACES=116, PETRI_TRANSITIONS=44} [2024-06-27 20:33:02,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-27 20:33:02,098 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 44 transitions, 305 flow [2024-06-27 20:33:02,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:02,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:02,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:02,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 20:33:02,099 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:02,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash -614615651, now seen corresponding path program 3 times [2024-06-27 20:33:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:02,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049188444] [2024-06-27 20:33:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:02,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:03,375 INFO 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 20:33:03,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:03,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049188444] [2024-06-27 20:33:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049188444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:03,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:03,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859143781] [2024-06-27 20:33:03,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:03,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:33:03,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 44 transitions, 305 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:03,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:03,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:33:03,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:03,806 INFO L124 PetriNetUnfolderBase]: 102/223 cut-off events. [2024-06-27 20:33:03,807 INFO L125 PetriNetUnfolderBase]: For 5914/5914 co-relation queries the response was YES. [2024-06-27 20:33:03,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 223 events. 102/223 cut-off events. For 5914/5914 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 776 event pairs, 26 based on Foata normal form. 6/228 useless extension candidates. Maximal degree in co-relation 837. Up to 138 conditions per place. [2024-06-27 20:33:03,808 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 33 selfloop transitions, 12 changer transitions 11/58 dead transitions. [2024-06-27 20:33:03,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 58 transitions, 451 flow [2024-06-27 20:33:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 20:33:03,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-27 20:33:03,809 INFO L175 Difference]: Start difference. First operand has 116 places, 44 transitions, 305 flow. Second operand 11 states and 111 transitions. [2024-06-27 20:33:03,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 58 transitions, 451 flow [2024-06-27 20:33:03,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 58 transitions, 393 flow, removed 11 selfloop flow, removed 20 redundant places. [2024-06-27 20:33:03,812 INFO L231 Difference]: Finished difference. Result has 83 places, 41 transitions, 254 flow [2024-06-27 20:33:03,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=254, PETRI_PLACES=83, PETRI_TRANSITIONS=41} [2024-06-27 20:33:03,812 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-27 20:33:03,812 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 41 transitions, 254 flow [2024-06-27 20:33:03,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:03,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:03,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:03,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 20:33:03,813 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:03,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:03,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2028438751, now seen corresponding path program 4 times [2024-06-27 20:33:03,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:03,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549395343] [2024-06-27 20:33:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:03,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:05,025 INFO 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 20:33:05,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549395343] [2024-06-27 20:33:05,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549395343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:05,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:05,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537636702] [2024-06-27 20:33:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:05,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:05,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:05,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:33:05,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 41 transitions, 254 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:05,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:05,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:33:05,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:05,350 INFO L124 PetriNetUnfolderBase]: 92/205 cut-off events. [2024-06-27 20:33:05,350 INFO L125 PetriNetUnfolderBase]: For 2730/2730 co-relation queries the response was YES. [2024-06-27 20:33:05,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 205 events. 92/205 cut-off events. For 2730/2730 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs, 24 based on Foata normal form. 6/210 useless extension candidates. Maximal degree in co-relation 708. Up to 120 conditions per place. [2024-06-27 20:33:05,351 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 28 selfloop transitions, 8 changer transitions 17/55 dead transitions. [2024-06-27 20:33:05,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 55 transitions, 392 flow [2024-06-27 20:33:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 20:33:05,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:33:05,352 INFO L175 Difference]: Start difference. First operand has 83 places, 41 transitions, 254 flow. Second operand 11 states and 110 transitions. [2024-06-27 20:33:05,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 55 transitions, 392 flow [2024-06-27 20:33:05,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 55 transitions, 362 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:33:05,355 INFO L231 Difference]: Finished difference. Result has 78 places, 35 transitions, 210 flow [2024-06-27 20:33:05,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=78, PETRI_TRANSITIONS=35} [2024-06-27 20:33:05,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-27 20:33:05,355 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 35 transitions, 210 flow [2024-06-27 20:33:05,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:05,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:05,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:05,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 20:33:05,356 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:05,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1606654719, now seen corresponding path program 5 times [2024-06-27 20:33:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852917612] [2024-06-27 20:33:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:05,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:06,431 INFO 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 20:33:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852917612] [2024-06-27 20:33:06,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852917612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:06,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:06,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059921423] [2024-06-27 20:33:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:06,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:06,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:33:06,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 35 transitions, 210 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:06,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:06,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:33:06,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:06,770 INFO L124 PetriNetUnfolderBase]: 78/175 cut-off events. [2024-06-27 20:33:06,770 INFO L125 PetriNetUnfolderBase]: For 2234/2234 co-relation queries the response was YES. [2024-06-27 20:33:06,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 175 events. 78/175 cut-off events. For 2234/2234 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 22 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 598. Up to 111 conditions per place. [2024-06-27 20:33:06,771 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 5 changer transitions 16/49 dead transitions. [2024-06-27 20:33:06,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 49 transitions, 336 flow [2024-06-27 20:33:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 20:33:06,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 20:33:06,772 INFO L175 Difference]: Start difference. First operand has 78 places, 35 transitions, 210 flow. Second operand 11 states and 106 transitions. [2024-06-27 20:33:06,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 49 transitions, 336 flow [2024-06-27 20:33:06,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 49 transitions, 310 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:33:06,773 INFO L231 Difference]: Finished difference. Result has 69 places, 30 transitions, 165 flow [2024-06-27 20:33:06,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=165, PETRI_PLACES=69, PETRI_TRANSITIONS=30} [2024-06-27 20:33:06,774 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-27 20:33:06,774 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 30 transitions, 165 flow [2024-06-27 20:33:06,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:06,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:06,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:06,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 20:33:06,775 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:06,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1073094763, now seen corresponding path program 6 times [2024-06-27 20:33:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:06,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604584859] [2024-06-27 20:33:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:06,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:07,641 INFO 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 20:33:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604584859] [2024-06-27 20:33:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604584859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:07,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:07,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784171336] [2024-06-27 20:33:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:07,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:07,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:33:07,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 30 transitions, 165 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:07,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:07,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:33:07,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:07,917 INFO L124 PetriNetUnfolderBase]: 65/148 cut-off events. [2024-06-27 20:33:07,918 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-06-27 20:33:07,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 148 events. 65/148 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 413 event pairs, 18 based on Foata normal form. 6/153 useless extension candidates. Maximal degree in co-relation 484. Up to 60 conditions per place. [2024-06-27 20:33:07,918 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 6 changer transitions 17/43 dead transitions. [2024-06-27 20:33:07,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 43 transitions, 275 flow [2024-06-27 20:33:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-27 20:33:07,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-27 20:33:07,919 INFO L175 Difference]: Start difference. First operand has 69 places, 30 transitions, 165 flow. Second operand 11 states and 105 transitions. [2024-06-27 20:33:07,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 43 transitions, 275 flow [2024-06-27 20:33:07,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 43 transitions, 257 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:33:07,921 INFO L231 Difference]: Finished difference. Result has 62 places, 22 transitions, 110 flow [2024-06-27 20:33:07,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=110, PETRI_PLACES=62, PETRI_TRANSITIONS=22} [2024-06-27 20:33:07,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-27 20:33:07,921 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 22 transitions, 110 flow [2024-06-27 20:33:07,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:07,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:07,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:07,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 20:33:07,922 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:07,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2115136085, now seen corresponding path program 7 times [2024-06-27 20:33:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195697842] [2024-06-27 20:33:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:07,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:08,714 INFO 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 20:33:08,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:08,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195697842] [2024-06-27 20:33:08,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195697842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:08,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:08,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093491148] [2024-06-27 20:33:08,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:08,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:08,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:08,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:08,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:33:08,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 22 transitions, 110 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 20:33:08,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:08,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:33:08,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:08,970 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-27 20:33:08,970 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2024-06-27 20:33:08,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 70 events. 27/70 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 1 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 186. Up to 24 conditions per place. [2024-06-27 20:33:08,971 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-27 20:33:08,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 31 transitions, 162 flow [2024-06-27 20:33:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 102 transitions. [2024-06-27 20:33:08,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27419354838709675 [2024-06-27 20:33:08,972 INFO L175 Difference]: Start difference. First operand has 62 places, 22 transitions, 110 flow. Second operand 12 states and 102 transitions. [2024-06-27 20:33:08,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 31 transitions, 162 flow [2024-06-27 20:33:08,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-27 20:33:08,972 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-27 20:33:08,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-27 20:33:08,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-27 20:33:08,973 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-27 20:33:08,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 20:33:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:33:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:33:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:33:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:33:08,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 20:33:08,977 INFO L445 BasicCegarLoop]: Path program histogram: [39, 22, 17, 14, 11, 9, 7, 6, 6, 6, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:08,979 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:33:08,979 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:33:08,982 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:33:08,982 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:33:08,983 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:33:08 BasicIcfg [2024-06-27 20:33:08,983 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:33:08,983 INFO L158 Benchmark]: Toolchain (without parser) took 205588.95ms. Allocated memory was 157.3MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 94.5MB in the beginning and 930.9MB in the end (delta: -836.5MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. [2024-06-27 20:33:08,983 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 157.3MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:33:08,984 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:33:08,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.99ms. Allocated memory is still 157.3MB. Free memory was 94.5MB in the beginning and 61.6MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-27 20:33:08,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.02ms. Allocated memory is still 157.3MB. Free memory was 61.6MB in the beginning and 58.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 20:33:08,984 INFO L158 Benchmark]: Boogie Preprocessor took 65.89ms. Allocated memory is still 157.3MB. Free memory was 58.8MB in the beginning and 56.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:33:08,984 INFO L158 Benchmark]: RCFGBuilder took 572.54ms. Allocated memory was 157.3MB in the beginning and 220.2MB in the end (delta: 62.9MB). Free memory was 56.0MB in the beginning and 147.0MB in the end (delta: -91.0MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2024-06-27 20:33:08,985 INFO L158 Benchmark]: TraceAbstraction took 204427.33ms. Allocated memory was 220.2MB in the beginning and 1.1GB in the end (delta: 857.7MB). Free memory was 145.9MB in the beginning and 930.9MB in the end (delta: -785.0MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. [2024-06-27 20:33:08,987 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 157.3MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.99ms. Allocated memory is still 157.3MB. Free memory was 94.5MB in the beginning and 61.6MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.02ms. Allocated memory is still 157.3MB. Free memory was 61.6MB in the beginning and 58.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.89ms. Allocated memory is still 157.3MB. Free memory was 58.8MB in the beginning and 56.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 572.54ms. Allocated memory was 157.3MB in the beginning and 220.2MB in the end (delta: 62.9MB). Free memory was 56.0MB in the beginning and 147.0MB in the end (delta: -91.0MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 204427.33ms. Allocated memory was 220.2MB in the beginning and 1.1GB in the end (delta: 857.7MB). Free memory was 145.9MB in the beginning and 930.9MB in the end (delta: -785.0MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 204.3s, OverallIterations: 163, TraceHistogramMax: 1, PathProgramHistogramMax: 39, EmptinessCheckTime: 0.0s, AutomataDifference: 81.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11472 SdHoareTripleChecker+Valid, 35.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9648 mSDsluCounter, 10339 SdHoareTripleChecker+Invalid, 30.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9194 mSDsCounter, 2464 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61673 IncrementalHoareTripleChecker+Invalid, 64137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2464 mSolverCounterUnsat, 1145 mSDtfsCounter, 61673 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1822 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1821 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3832 ImplicationChecksByTransitivity, 46.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2322occurred in iteration=114, InterpolantAutomatonStates: 1602, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 120.1s InterpolantComputationTime, 2675 NumberOfCodeBlocks, 2675 NumberOfCodeBlocksAsserted, 163 NumberOfCheckSat, 2512 ConstructedInterpolants, 0 QuantifiedInterpolants, 114643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 163 InterpolantComputations, 163 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 20:33:09,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE