./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_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/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/rfi001_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/rfi001_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-eb4cb34-m [2024-06-21 17:05:33,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 17:05:33,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 17:05:33,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 17:05:33,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 17:05:33,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 17:05:33,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 17:05:33,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 17:05:33,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 17:05:33,169 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 17:05:33,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 17:05:33,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 17:05:33,171 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 17:05:33,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 17:05:33,172 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 17:05:33,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 17:05:33,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 17:05:33,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 17:05:33,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 17:05:33,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 17:05:33,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 17:05:33,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 17:05:33,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 17:05:33,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 17:05:33,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 17:05:33,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 17:05:33,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 17:05:33,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 17:05:33,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 17:05:33,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 17:05:33,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 17:05:33,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 17:05:33,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 17:05:33,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 17:05:33,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 17:05:33,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 17:05:33,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 17:05:33,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 17:05:33,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 17:05:33,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 17:05:33,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 17:05:33,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 17:05:33,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 17:05:33,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 17:05:33,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 17:05:33,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 17:05:33,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 17:05:33,413 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 17:05:33,413 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 17:05:33,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-21 17:05:33,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 17:05:33,539 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 17:05:33,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-21 17:05:34,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 17:05:34,798 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 17:05:34,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-21 17:05:34,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b29537b/19bf21dd34884042800e01d210ae7646/FLAG606e18a6a [2024-06-21 17:05:34,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b29537b/19bf21dd34884042800e01d210ae7646 [2024-06-21 17:05:34,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 17:05:34,826 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 17:05:34,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 17:05:34,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 17:05:34,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 17:05:34,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 05:05:33" (1/2) ... [2024-06-21 17:05:34,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210f81e9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:34, skipping insertion in model container [2024-06-21 17:05:34,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 05:05:33" (1/2) ... [2024-06-21 17:05:34,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@531ab6ee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:34, skipping insertion in model container [2024-06-21 17:05:34,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 05:05:34" (2/2) ... [2024-06-21 17:05:34,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210f81e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:34, skipping insertion in model container [2024-06-21 17:05:34,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 05:05:34" (2/2) ... [2024-06-21 17:05:34,835 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 17:05:34,886 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 17:05:34,887 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1)) [2024-06-21 17:05:34,887 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1)) [2024-06-21 17:05:34,887 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 17:05:34,888 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-21 17:05:34,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 17:05:35,208 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 17:05:35,215 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 17:05:35,376 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 17:05:35,413 INFO L206 MainTranslator]: Completed translation [2024-06-21 17:05:35,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35 WrapperNode [2024-06-21 17:05:35,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 17:05:35,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 17:05:35,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 17:05:35,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 17:05:35,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,478 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-21 17:05:35,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 17:05:35,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 17:05:35,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 17:05:35,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 17:05:35,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,523 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]. [2024-06-21 17:05:35,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 17:05:35,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 17:05:35,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 17:05:35,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 17:05:35,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (1/1) ... [2024-06-21 17:05:35,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 17:05:35,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 17:05:35,573 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) [2024-06-21 17:05:35,591 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 [2024-06-21 17:05:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 17:05:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 17:05:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 17:05:35,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 17:05:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 17:05:35,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 17:05:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 17:05:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 17:05:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 17:05:35,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 17:05:35,608 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 17:05:35,707 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 17:05:35,709 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 17:05:35,917 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 17:05:35,917 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 17:05:36,060 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 17:05:36,060 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 17:05:36,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 05:05:36 BoogieIcfgContainer [2024-06-21 17:05:36,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 17:05:36,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 17:05:36,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 17:05:36,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 17:05:36,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 05:05:33" (1/4) ... [2024-06-21 17:05:36,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a170850 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 05:05:36, skipping insertion in model container [2024-06-21 17:05:36,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 05:05:34" (2/4) ... [2024-06-21 17:05:36,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a170850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 05:05:36, skipping insertion in model container [2024-06-21 17:05:36,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:35" (3/4) ... [2024-06-21 17:05:36,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a170850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 05:05:36, skipping insertion in model container [2024-06-21 17:05:36,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 05:05:36" (4/4) ... [2024-06-21 17:05:36,070 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-21 17:05:36,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 17:05:36,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 17:05:36,084 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 17:05:36,118 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 17:05:36,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 17:05:36,173 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-21 17:05:36,174 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 17:05:36,175 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. [2024-06-21 17:05:36,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 17:05:36,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-21 17:05:36,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 17:05:36,194 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;@694ac9ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 17:05:36,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 17:05:36,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 17:05:36,198 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 17:05:36,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 17:05:36,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:36,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 17:05:36,200 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)] === [2024-06-21 17:05:36,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash 332828771, now seen corresponding path program 1 times [2024-06-21 17:05:36,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:36,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349067473] [2024-06-21 17:05:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:36,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:36,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:36,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349067473] [2024-06-21 17:05:36,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349067473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:36,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:36,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 17:05:36,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626173416] [2024-06-21 17:05:36,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:36,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 17:05:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:36,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 17:05:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 17:05:36,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 17:05:36,927 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) [2024-06-21 17:05:36,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:36,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 17:05:36,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:37,057 INFO L124 PetriNetUnfolderBase]: 189/351 cut-off events. [2024-06-21 17:05:37,057 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 17:05:37,060 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. [2024-06-21 17:05:37,063 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-21 17:05:37,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-21 17:05:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 17:05:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 17:05:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-21 17:05:37,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-21 17:05:37,075 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-21 17:05:37,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-21 17:05:37,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 17:05:37,079 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-21 17:05:37,081 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} [2024-06-21 17:05:37,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-21 17:05:37,084 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-21 17:05:37,085 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) [2024-06-21 17:05:37,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:37,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:37,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 17:05:37,085 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)] === [2024-06-21 17:05:37,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2020889858, now seen corresponding path program 1 times [2024-06-21 17:05:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:37,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827105567] [2024-06-21 17:05:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:37,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827105567] [2024-06-21 17:05:37,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827105567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:37,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:37,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 17:05:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632646304] [2024-06-21 17:05:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:37,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 17:05:37,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 17:05:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 17:05:37,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 17:05:37,543 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) [2024-06-21 17:05:37,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:37,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 17:05:37,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:37,662 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-21 17:05:37,662 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-21 17:05:37,664 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. [2024-06-21 17:05:37,667 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-21 17:05:37,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-21 17:05:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 17:05:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 17:05:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-21 17:05:37,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-21 17:05:37,670 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-21 17:05:37,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-21 17:05:37,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 17:05:37,674 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-21 17:05:37,674 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} [2024-06-21 17:05:37,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-21 17:05:37,676 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-21 17:05:37,676 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) [2024-06-21 17:05:37,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:37,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:37,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 17:05:37,677 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)] === [2024-06-21 17:05:37,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1776923130, now seen corresponding path program 1 times [2024-06-21 17:05:37,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:37,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927518331] [2024-06-21 17:05:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:38,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:38,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927518331] [2024-06-21 17:05:38,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927518331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:38,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:38,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 17:05:38,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426318604] [2024-06-21 17:05:38,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:38,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 17:05:38,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 17:05:38,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 17:05:38,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 17:05:38,135 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) [2024-06-21 17:05:38,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:38,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 17:05:38,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:38,212 INFO L124 PetriNetUnfolderBase]: 187/354 cut-off events. [2024-06-21 17:05:38,212 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-21 17:05:38,213 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. [2024-06-21 17:05:38,214 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-21 17:05:38,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 251 flow [2024-06-21 17:05:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 17:05:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 17:05:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-21 17:05:38,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-21 17:05:38,216 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 90 transitions. [2024-06-21 17:05:38,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 251 flow [2024-06-21 17:05:38,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 17:05:38,217 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-21 17:05:38,217 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} [2024-06-21 17:05:38,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-21 17:05:38,218 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-21 17:05:38,218 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) [2024-06-21 17:05:38,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:38,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:38,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 17:05:38,219 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)] === [2024-06-21 17:05:38,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1414893681, now seen corresponding path program 1 times [2024-06-21 17:05:38,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:38,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902328795] [2024-06-21 17:05:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:38,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:38,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:38,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902328795] [2024-06-21 17:05:38,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902328795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 17:05:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46983759] [2024-06-21 17:05:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:38,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 17:05:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:38,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 17:05:38,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 17:05:38,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 17:05:38,771 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) [2024-06-21 17:05:38,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:38,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 17:05:38,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:38,863 INFO L124 PetriNetUnfolderBase]: 188/356 cut-off events. [2024-06-21 17:05:38,863 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-21 17:05:38,864 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. [2024-06-21 17:05:38,865 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-21 17:05:38,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 336 flow [2024-06-21 17:05:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:05:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:05:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-21 17:05:38,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-21 17:05:38,867 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 106 transitions. [2024-06-21 17:05:38,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 336 flow [2024-06-21 17:05:38,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 332 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-21 17:05:38,870 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-21 17:05:38,870 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} [2024-06-21 17:05:38,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-21 17:05:38,871 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-21 17:05:38,871 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) [2024-06-21 17:05:38,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:38,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:38,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 17:05:38,872 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)] === [2024-06-21 17:05:38,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1773879685, now seen corresponding path program 1 times [2024-06-21 17:05:38,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:38,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889273122] [2024-06-21 17:05:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:38,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889273122] [2024-06-21 17:05:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889273122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:39,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:05:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650408833] [2024-06-21 17:05:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:39,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:05:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:05:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:05:39,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 17:05:39,501 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) [2024-06-21 17:05:39,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:39,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 17:05:39,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:39,647 INFO L124 PetriNetUnfolderBase]: 189/359 cut-off events. [2024-06-21 17:05:39,648 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-21 17:05:39,648 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. [2024-06-21 17:05:39,650 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-21 17:05:39,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 382 flow [2024-06-21 17:05:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-21 17:05:39,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391705069124424 [2024-06-21 17:05:39,651 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 117 transitions. [2024-06-21 17:05:39,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 382 flow [2024-06-21 17:05:39,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 17:05:39,654 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-21 17:05:39,654 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} [2024-06-21 17:05:39,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-21 17:05:39,655 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-21 17:05:39,655 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) [2024-06-21 17:05:39,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:39,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:39,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 17:05:39,656 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)] === [2024-06-21 17:05:39,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1502486617, now seen corresponding path program 1 times [2024-06-21 17:05:39,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:39,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498451634] [2024-06-21 17:05:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:39,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498451634] [2024-06-21 17:05:39,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498451634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:39,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:39,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 17:05:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129041007] [2024-06-21 17:05:39,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:39,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 17:05:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:39,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 17:05:39,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 17:05:40,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 17:05:40,031 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) [2024-06-21 17:05:40,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:40,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 17:05:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:40,193 INFO L124 PetriNetUnfolderBase]: 187/355 cut-off events. [2024-06-21 17:05:40,193 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-21 17:05:40,195 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. [2024-06-21 17:05:40,196 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-21 17:05:40,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 309 flow [2024-06-21 17:05:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 17:05:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 17:05:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-21 17:05:40,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 17:05:40,198 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 64 transitions. [2024-06-21 17:05:40,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 309 flow [2024-06-21 17:05:40,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 268 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 17:05:40,202 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-21 17:05:40,202 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} [2024-06-21 17:05:40,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-21 17:05:40,204 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-21 17:05:40,204 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) [2024-06-21 17:05:40,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:40,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:40,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 17:05:40,205 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)] === [2024-06-21 17:05:40,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash -696182331, now seen corresponding path program 1 times [2024-06-21 17:05:40,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:40,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452298369] [2024-06-21 17:05:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:40,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:40,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452298369] [2024-06-21 17:05:40,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452298369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:40,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:40,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:05:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350485762] [2024-06-21 17:05:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:40,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:05:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:05:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:05:40,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:40,640 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) [2024-06-21 17:05:40,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:40,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:40,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:40,858 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-21 17:05:40,859 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-21 17:05:40,860 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. [2024-06-21 17:05:40,862 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-21 17:05:40,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 303 flow [2024-06-21 17:05:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:05:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:05:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-21 17:05:40,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 17:05:40,863 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 69 transitions. [2024-06-21 17:05:40,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 303 flow [2024-06-21 17:05:40,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 288 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 17:05:40,866 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-21 17:05:40,866 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} [2024-06-21 17:05:40,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-21 17:05:40,868 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-21 17:05:40,868 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) [2024-06-21 17:05:40,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:40,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:40,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 17:05:40,868 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)] === [2024-06-21 17:05:40,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash -479738274, now seen corresponding path program 1 times [2024-06-21 17:05:40,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:40,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767466731] [2024-06-21 17:05:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:41,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767466731] [2024-06-21 17:05:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767466731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:41,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:41,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:05:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040032521] [2024-06-21 17:05:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:41,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:05:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:05:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:05:41,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 17:05:41,306 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) [2024-06-21 17:05:41,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:41,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 17:05:41,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:41,458 INFO L124 PetriNetUnfolderBase]: 197/368 cut-off events. [2024-06-21 17:05:41,458 INFO L125 PetriNetUnfolderBase]: For 1312/1312 co-relation queries the response was YES. [2024-06-21 17:05:41,459 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. [2024-06-21 17:05:41,460 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-21 17:05:41,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 358 flow [2024-06-21 17:05:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:05:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:05:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-21 17:05:41,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-21 17:05:41,462 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 6 states and 82 transitions. [2024-06-21 17:05:41,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 358 flow [2024-06-21 17:05:41,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 17:05:41,464 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 242 flow [2024-06-21 17:05:41,464 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} [2024-06-21 17:05:41,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-21 17:05:41,465 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 242 flow [2024-06-21 17:05:41,465 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) [2024-06-21 17:05:41,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:41,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 17:05:41,465 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)] === [2024-06-21 17:05:41,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash -450960354, now seen corresponding path program 2 times [2024-06-21 17:05:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:41,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812029479] [2024-06-21 17:05:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:41,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812029479] [2024-06-21 17:05:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812029479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:41,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:05:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523756302] [2024-06-21 17:05:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:05:41,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:05:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:05:41,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 17:05:41,874 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) [2024-06-21 17:05:41,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:41,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 17:05:41,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:42,070 INFO L124 PetriNetUnfolderBase]: 192/358 cut-off events. [2024-06-21 17:05:42,070 INFO L125 PetriNetUnfolderBase]: For 1557/1557 co-relation queries the response was YES. [2024-06-21 17:05:42,071 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. [2024-06-21 17:05:42,072 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-21 17:05:42,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 344 flow [2024-06-21 17:05:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:05:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:05:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-21 17:05:42,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 17:05:42,074 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 242 flow. Second operand 6 states and 74 transitions. [2024-06-21 17:05:42,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 344 flow [2024-06-21 17:05:42,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 329 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 17:05:42,076 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 248 flow [2024-06-21 17:05:42,076 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} [2024-06-21 17:05:42,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-21 17:05:42,077 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 248 flow [2024-06-21 17:05:42,077 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) [2024-06-21 17:05:42,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:42,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 17:05:42,078 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)] === [2024-06-21 17:05:42,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -106814762, now seen corresponding path program 1 times [2024-06-21 17:05:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:42,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963868802] [2024-06-21 17:05:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:42,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:42,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963868802] [2024-06-21 17:05:42,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963868802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:42,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:42,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:42,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470800992] [2024-06-21 17:05:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:42,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:42,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:42,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:42,576 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) [2024-06-21 17:05:42,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:42,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:42,822 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-21 17:05:42,822 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2024-06-21 17:05:42,823 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. [2024-06-21 17:05:42,824 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-21 17:05:42,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 380 flow [2024-06-21 17:05:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 17:05:42,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-21 17:05:42,825 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 248 flow. Second operand 7 states and 80 transitions. [2024-06-21 17:05:42,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 380 flow [2024-06-21 17:05:42,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 346 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:42,827 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 253 flow [2024-06-21 17:05:42,828 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} [2024-06-21 17:05:42,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-21 17:05:42,828 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 253 flow [2024-06-21 17:05:42,828 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) [2024-06-21 17:05:42,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:42,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:42,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 17:05:42,829 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)] === [2024-06-21 17:05:42,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash 806333126, now seen corresponding path program 1 times [2024-06-21 17:05:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:42,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290214935] [2024-06-21 17:05:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:43,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:43,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290214935] [2024-06-21 17:05:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290214935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:43,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:43,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089745325] [2024-06-21 17:05:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:43,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:43,277 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) [2024-06-21 17:05:43,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:43,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:43,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:43,406 INFO L124 PetriNetUnfolderBase]: 208/375 cut-off events. [2024-06-21 17:05:43,406 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2024-06-21 17:05:43,407 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. [2024-06-21 17:05:43,408 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-21 17:05:43,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 445 flow [2024-06-21 17:05:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-21 17:05:43,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-21 17:05:43,410 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 253 flow. Second operand 7 states and 89 transitions. [2024-06-21 17:05:43,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 445 flow [2024-06-21 17:05:43,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 422 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 17:05:43,413 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 298 flow [2024-06-21 17:05:43,413 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} [2024-06-21 17:05:43,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-21 17:05:43,413 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 298 flow [2024-06-21 17:05:43,414 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) [2024-06-21 17:05:43,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:43,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:43,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 17:05:43,414 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)] === [2024-06-21 17:05:43,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1569615836, now seen corresponding path program 2 times [2024-06-21 17:05:43,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:43,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592340511] [2024-06-21 17:05:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:43,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:43,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592340511] [2024-06-21 17:05:43,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592340511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:43,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481678475] [2024-06-21 17:05:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:43,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:43,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:43,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:43,877 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) [2024-06-21 17:05:43,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:43,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:43,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:44,034 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-21 17:05:44,034 INFO L125 PetriNetUnfolderBase]: For 2401/2401 co-relation queries the response was YES. [2024-06-21 17:05:44,035 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. [2024-06-21 17:05:44,036 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-21 17:05:44,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 484 flow [2024-06-21 17:05:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-21 17:05:44,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-21 17:05:44,038 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 298 flow. Second operand 7 states and 81 transitions. [2024-06-21 17:05:44,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 484 flow [2024-06-21 17:05:44,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 464 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 17:05:44,041 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 341 flow [2024-06-21 17:05:44,041 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} [2024-06-21 17:05:44,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-21 17:05:44,042 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 341 flow [2024-06-21 17:05:44,042 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) [2024-06-21 17:05:44,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:44,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:44,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 17:05:44,042 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)] === [2024-06-21 17:05:44,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash 983701796, now seen corresponding path program 3 times [2024-06-21 17:05:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085130807] [2024-06-21 17:05:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:44,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:44,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085130807] [2024-06-21 17:05:44,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085130807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:44,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:44,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923429427] [2024-06-21 17:05:44,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:44,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:44,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:44,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:44,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:44,536 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) [2024-06-21 17:05:44,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:44,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:44,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:44,729 INFO L124 PetriNetUnfolderBase]: 209/377 cut-off events. [2024-06-21 17:05:44,729 INFO L125 PetriNetUnfolderBase]: For 2832/2832 co-relation queries the response was YES. [2024-06-21 17:05:44,730 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. [2024-06-21 17:05:44,731 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-21 17:05:44,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 473 flow [2024-06-21 17:05:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 17:05:44,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-21 17:05:44,732 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 341 flow. Second operand 7 states and 78 transitions. [2024-06-21 17:05:44,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 473 flow [2024-06-21 17:05:44,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 450 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 17:05:44,736 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 343 flow [2024-06-21 17:05:44,736 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} [2024-06-21 17:05:44,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-21 17:05:44,737 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 343 flow [2024-06-21 17:05:44,737 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) [2024-06-21 17:05:44,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:44,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 17:05:44,737 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)] === [2024-06-21 17:05:44,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1470764227, now seen corresponding path program 1 times [2024-06-21 17:05:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:44,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731848380] [2024-06-21 17:05:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731848380] [2024-06-21 17:05:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731848380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:45,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:45,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:45,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226870997] [2024-06-21 17:05:45,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:45,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:45,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:45,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:45,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:45,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 17:05:45,318 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) [2024-06-21 17:05:45,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:45,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 17:05:45,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:45,506 INFO L124 PetriNetUnfolderBase]: 197/364 cut-off events. [2024-06-21 17:05:45,506 INFO L125 PetriNetUnfolderBase]: For 3257/3257 co-relation queries the response was YES. [2024-06-21 17:05:45,507 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. [2024-06-21 17:05:45,508 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 18 changer transitions 0/69 dead transitions. [2024-06-21 17:05:45,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 511 flow [2024-06-21 17:05:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-21 17:05:45,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-21 17:05:45,510 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 343 flow. Second operand 8 states and 105 transitions. [2024-06-21 17:05:45,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 511 flow [2024-06-21 17:05:45,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 486 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:45,513 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 376 flow [2024-06-21 17:05:45,513 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} [2024-06-21 17:05:45,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-21 17:05:45,514 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 376 flow [2024-06-21 17:05:45,514 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) [2024-06-21 17:05:45,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:45,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:45,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 17:05:45,514 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)] === [2024-06-21 17:05:45,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -773481648, now seen corresponding path program 1 times [2024-06-21 17:05:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:45,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011994582] [2024-06-21 17:05:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:45,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011994582] [2024-06-21 17:05:45,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011994582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:45,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:45,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037529218] [2024-06-21 17:05:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:45,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:45,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:45,987 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) [2024-06-21 17:05:45,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:45,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:45,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:46,127 INFO L124 PetriNetUnfolderBase]: 210/379 cut-off events. [2024-06-21 17:05:46,128 INFO L125 PetriNetUnfolderBase]: For 3655/3655 co-relation queries the response was YES. [2024-06-21 17:05:46,129 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. [2024-06-21 17:05:46,131 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 24 changer transitions 0/71 dead transitions. [2024-06-21 17:05:46,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 590 flow [2024-06-21 17:05:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-21 17:05:46,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-21 17:05:46,133 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 376 flow. Second operand 7 states and 92 transitions. [2024-06-21 17:05:46,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 590 flow [2024-06-21 17:05:46,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 550 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:46,143 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 403 flow [2024-06-21 17:05:46,143 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} [2024-06-21 17:05:46,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-21 17:05:46,143 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 403 flow [2024-06-21 17:05:46,143 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) [2024-06-21 17:05:46,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:46,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:46,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 17:05:46,143 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)] === [2024-06-21 17:05:46,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:46,144 INFO L85 PathProgramCache]: Analyzing trace with hash 968034464, now seen corresponding path program 2 times [2024-06-21 17:05:46,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:46,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770487330] [2024-06-21 17:05:46,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:46,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:46,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770487330] [2024-06-21 17:05:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770487330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291642213] [2024-06-21 17:05:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:46,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:46,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:46,591 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) [2024-06-21 17:05:46,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:46,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:46,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:46,710 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-21 17:05:46,711 INFO L125 PetriNetUnfolderBase]: For 4182/4182 co-relation queries the response was YES. [2024-06-21 17:05:46,712 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. [2024-06-21 17:05:46,713 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 23 changer transitions 0/70 dead transitions. [2024-06-21 17:05:46,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 613 flow [2024-06-21 17:05:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 17:05:46,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 17:05:46,714 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 403 flow. Second operand 7 states and 88 transitions. [2024-06-21 17:05:46,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 613 flow [2024-06-21 17:05:46,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 551 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 17:05:46,720 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 411 flow [2024-06-21 17:05:46,720 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} [2024-06-21 17:05:46,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-21 17:05:46,720 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 411 flow [2024-06-21 17:05:46,720 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) [2024-06-21 17:05:46,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:46,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 17:05:46,721 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)] === [2024-06-21 17:05:46,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash -773475851, now seen corresponding path program 1 times [2024-06-21 17:05:46,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:46,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9781211] [2024-06-21 17:05:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9781211] [2024-06-21 17:05:47,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9781211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:47,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754495284] [2024-06-21 17:05:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:47,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:47,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:47,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:47,249 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) [2024-06-21 17:05:47,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:47,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:47,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:47,412 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-06-21 17:05:47,413 INFO L125 PetriNetUnfolderBase]: For 5820/5820 co-relation queries the response was YES. [2024-06-21 17:05:47,414 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. [2024-06-21 17:05:47,416 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2024-06-21 17:05:47,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 687 flow [2024-06-21 17:05:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-21 17:05:47,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-21 17:05:47,419 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 411 flow. Second operand 8 states and 105 transitions. [2024-06-21 17:05:47,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 687 flow [2024-06-21 17:05:47,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 652 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 17:05:47,426 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 482 flow [2024-06-21 17:05:47,426 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} [2024-06-21 17:05:47,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-21 17:05:47,426 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 482 flow [2024-06-21 17:05:47,427 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) [2024-06-21 17:05:47,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:47,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:47,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 17:05:47,427 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)] === [2024-06-21 17:05:47,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 418828349, now seen corresponding path program 2 times [2024-06-21 17:05:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:47,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315680372] [2024-06-21 17:05:47,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:47,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:47,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:47,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315680372] [2024-06-21 17:05:47,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315680372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:47,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399068097] [2024-06-21 17:05:47,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:48,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:48,014 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) [2024-06-21 17:05:48,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:48,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:48,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:48,211 INFO L124 PetriNetUnfolderBase]: 260/461 cut-off events. [2024-06-21 17:05:48,211 INFO L125 PetriNetUnfolderBase]: For 6414/6414 co-relation queries the response was YES. [2024-06-21 17:05:48,212 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 1706 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. [2024-06-21 17:05:48,214 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-21 17:05:48,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 761 flow [2024-06-21 17:05:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:05:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:05:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 17:05:48,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 17:05:48,215 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 482 flow. Second operand 9 states and 103 transitions. [2024-06-21 17:05:48,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 761 flow [2024-06-21 17:05:48,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 736 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 17:05:48,221 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 560 flow [2024-06-21 17:05:48,222 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=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=560, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-06-21 17:05:48,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-21 17:05:48,222 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 560 flow [2024-06-21 17:05:48,222 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) [2024-06-21 17:05:48,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:48,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 17:05:48,223 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)] === [2024-06-21 17:05:48,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1322856655, now seen corresponding path program 3 times [2024-06-21 17:05:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:48,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282491462] [2024-06-21 17:05:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:48,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282491462] [2024-06-21 17:05:48,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282491462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:48,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:48,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:48,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843878602] [2024-06-21 17:05:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:48,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:48,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:48,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:48,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 560 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) [2024-06-21 17:05:48,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:48,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:48,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:48,945 INFO L124 PetriNetUnfolderBase]: 269/476 cut-off events. [2024-06-21 17:05:48,945 INFO L125 PetriNetUnfolderBase]: For 7341/7341 co-relation queries the response was YES. [2024-06-21 17:05:48,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 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 1773 event pairs, 53 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2483. Up to 433 conditions per place. [2024-06-21 17:05:48,948 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2024-06-21 17:05:48,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 816 flow [2024-06-21 17:05:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-21 17:05:48,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 17:05:48,951 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 560 flow. Second operand 8 states and 94 transitions. [2024-06-21 17:05:48,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 816 flow [2024-06-21 17:05:48,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 786 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 17:05:48,963 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 589 flow [2024-06-21 17:05:48,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=589, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2024-06-21 17:05:48,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-21 17:05:48,964 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 589 flow [2024-06-21 17:05:48,964 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) [2024-06-21 17:05:48,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:48,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:48,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 17:05:48,964 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)] === [2024-06-21 17:05:48,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash 430252533, now seen corresponding path program 4 times [2024-06-21 17:05:48,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:48,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913001840] [2024-06-21 17:05:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:49,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:49,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913001840] [2024-06-21 17:05:49,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913001840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:49,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:49,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:49,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693776160] [2024-06-21 17:05:49,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:49,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:49,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:49,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:49,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:49,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:49,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 589 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) [2024-06-21 17:05:49,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:49,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:49,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:49,694 INFO L124 PetriNetUnfolderBase]: 263/467 cut-off events. [2024-06-21 17:05:49,694 INFO L125 PetriNetUnfolderBase]: For 7355/7355 co-relation queries the response was YES. [2024-06-21 17:05:49,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 467 events. 263/467 cut-off events. For 7355/7355 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1724 event pairs, 51 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2422. Up to 441 conditions per place. [2024-06-21 17:05:49,698 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-06-21 17:05:49,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 773 flow [2024-06-21 17:05:49,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 17:05:49,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-21 17:05:49,699 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 589 flow. Second operand 8 states and 89 transitions. [2024-06-21 17:05:49,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 773 flow [2024-06-21 17:05:49,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 717 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:49,708 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 564 flow [2024-06-21 17:05:49,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2024-06-21 17:05:49,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-21 17:05:49,709 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 564 flow [2024-06-21 17:05:49,709 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) [2024-06-21 17:05:49,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:49,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:49,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 17:05:49,709 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)] === [2024-06-21 17:05:49,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 429985406, now seen corresponding path program 3 times [2024-06-21 17:05:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:49,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821689469] [2024-06-21 17:05:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:50,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821689469] [2024-06-21 17:05:50,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821689469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:50,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:50,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:05:50,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953047148] [2024-06-21 17:05:50,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:50,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:05:50,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:50,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:05:50,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:05:50,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:50,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 564 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) [2024-06-21 17:05:50,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:50,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:50,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:50,382 INFO L124 PetriNetUnfolderBase]: 261/464 cut-off events. [2024-06-21 17:05:50,382 INFO L125 PetriNetUnfolderBase]: For 7172/7172 co-relation queries the response was YES. [2024-06-21 17:05:50,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 464 events. 261/464 cut-off events. For 7172/7172 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1724 event pairs, 52 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2365. Up to 444 conditions per place. [2024-06-21 17:05:50,386 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 66 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-06-21 17:05:50,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 80 transitions, 734 flow [2024-06-21 17:05:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:05:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:05:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-21 17:05:50,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-21 17:05:50,387 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 564 flow. Second operand 7 states and 79 transitions. [2024-06-21 17:05:50,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 80 transitions, 734 flow [2024-06-21 17:05:50,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 691 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 17:05:50,397 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 550 flow [2024-06-21 17:05:50,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=550, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-06-21 17:05:50,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-21 17:05:50,397 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 550 flow [2024-06-21 17:05:50,398 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) [2024-06-21 17:05:50,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:50,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:50,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 17:05:50,398 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)] === [2024-06-21 17:05:50,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1673720617, now seen corresponding path program 1 times [2024-06-21 17:05:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316306728] [2024-06-21 17:05:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:50,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316306728] [2024-06-21 17:05:50,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316306728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:50,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:50,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:50,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676890245] [2024-06-21 17:05:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:50,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:51,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 17:05:51,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 550 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) [2024-06-21 17:05:51,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:51,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 17:05:51,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:51,287 INFO L124 PetriNetUnfolderBase]: 252/459 cut-off events. [2024-06-21 17:05:51,287 INFO L125 PetriNetUnfolderBase]: For 8200/8200 co-relation queries the response was YES. [2024-06-21 17:05:51,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 459 events. 252/459 cut-off events. For 8200/8200 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1750 event pairs, 30 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 2346. Up to 333 conditions per place. [2024-06-21 17:05:51,290 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 62 selfloop transitions, 19 changer transitions 0/91 dead transitions. [2024-06-21 17:05:51,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 806 flow [2024-06-21 17:05:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 17:05:51,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 17:05:51,291 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 550 flow. Second operand 8 states and 104 transitions. [2024-06-21 17:05:51,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 806 flow [2024-06-21 17:05:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 758 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 17:05:51,301 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 554 flow [2024-06-21 17:05:51,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=554, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-06-21 17:05:51,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-21 17:05:51,302 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 554 flow [2024-06-21 17:05:51,302 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) [2024-06-21 17:05:51,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:51,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:51,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 17:05:51,302 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)] === [2024-06-21 17:05:51,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -60463455, now seen corresponding path program 1 times [2024-06-21 17:05:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:51,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134025500] [2024-06-21 17:05:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134025500] [2024-06-21 17:05:51,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134025500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:51,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308047588] [2024-06-21 17:05:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:51,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:51,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:51,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 554 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) [2024-06-21 17:05:51,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:51,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:51,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:52,076 INFO L124 PetriNetUnfolderBase]: 271/482 cut-off events. [2024-06-21 17:05:52,077 INFO L125 PetriNetUnfolderBase]: For 8588/8588 co-relation queries the response was YES. [2024-06-21 17:05:52,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 482 events. 271/482 cut-off events. For 8588/8588 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1826 event pairs, 50 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 2486. Up to 378 conditions per place. [2024-06-21 17:05:52,080 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 28 changer transitions 0/95 dead transitions. [2024-06-21 17:05:52,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 95 transitions, 858 flow [2024-06-21 17:05:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:52,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 17:05:52,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-21 17:05:52,081 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 554 flow. Second operand 8 states and 101 transitions. [2024-06-21 17:05:52,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 95 transitions, 858 flow [2024-06-21 17:05:52,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 814 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 17:05:52,093 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 616 flow [2024-06-21 17:05:52,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2024-06-21 17:05:52,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-21 17:05:52,094 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 616 flow [2024-06-21 17:05:52,094 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) [2024-06-21 17:05:52,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:52,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:52,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 17:05:52,094 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)] === [2024-06-21 17:05:52,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781067, now seen corresponding path program 2 times [2024-06-21 17:05:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333175751] [2024-06-21 17:05:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:52,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333175751] [2024-06-21 17:05:52,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333175751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:52,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:52,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:52,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757138141] [2024-06-21 17:05:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:52,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:52,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 17:05:52,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 616 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) [2024-06-21 17:05:52,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:52,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 17:05:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:52,901 INFO L124 PetriNetUnfolderBase]: 263/478 cut-off events. [2024-06-21 17:05:52,902 INFO L125 PetriNetUnfolderBase]: For 9913/9913 co-relation queries the response was YES. [2024-06-21 17:05:52,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572 conditions, 478 events. 263/478 cut-off events. For 9913/9913 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1861 event pairs, 46 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2526. Up to 384 conditions per place. [2024-06-21 17:05:52,905 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 65 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2024-06-21 17:05:52,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 831 flow [2024-06-21 17:05:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 17:05:52,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 17:05:52,909 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 616 flow. Second operand 8 states and 104 transitions. [2024-06-21 17:05:52,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 831 flow [2024-06-21 17:05:52,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 786 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 17:05:52,921 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 624 flow [2024-06-21 17:05:52,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=624, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-06-21 17:05:52,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-21 17:05:52,922 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 624 flow [2024-06-21 17:05:52,922 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) [2024-06-21 17:05:52,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:52,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:52,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 17:05:52,922 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)] === [2024-06-21 17:05:52,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1653751367, now seen corresponding path program 2 times [2024-06-21 17:05:52,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:52,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042845067] [2024-06-21 17:05:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:52,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:53,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:53,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042845067] [2024-06-21 17:05:53,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042845067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:53,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:53,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:53,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124531411] [2024-06-21 17:05:53,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:53,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:53,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:53,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 624 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) [2024-06-21 17:05:53,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:53,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:53,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:53,693 INFO L124 PetriNetUnfolderBase]: 278/495 cut-off events. [2024-06-21 17:05:53,694 INFO L125 PetriNetUnfolderBase]: For 10283/10283 co-relation queries the response was YES. [2024-06-21 17:05:53,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 495 events. 278/495 cut-off events. For 10283/10283 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1895 event pairs, 50 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2629. Up to 423 conditions per place. [2024-06-21 17:05:53,697 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 26 changer transitions 0/94 dead transitions. [2024-06-21 17:05:53,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 848 flow [2024-06-21 17:05:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 17:05:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-21 17:05:53,698 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 624 flow. Second operand 8 states and 97 transitions. [2024-06-21 17:05:53,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 848 flow [2024-06-21 17:05:53,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 808 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:53,709 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 659 flow [2024-06-21 17:05:53,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=659, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2024-06-21 17:05:53,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-21 17:05:53,710 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 659 flow [2024-06-21 17:05:53,710 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) [2024-06-21 17:05:53,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:53,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 17:05:53,711 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)] === [2024-06-21 17:05:53,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash -152518389, now seen corresponding path program 3 times [2024-06-21 17:05:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998306194] [2024-06-21 17:05:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:53,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:54,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998306194] [2024-06-21 17:05:54,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998306194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:54,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:54,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:54,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243249157] [2024-06-21 17:05:54,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:54,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:54,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 17:05:54,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 659 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) [2024-06-21 17:05:54,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:54,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 17:05:54,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:54,549 INFO L124 PetriNetUnfolderBase]: 263/478 cut-off events. [2024-06-21 17:05:54,550 INFO L125 PetriNetUnfolderBase]: For 10929/10929 co-relation queries the response was YES. [2024-06-21 17:05:54,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 478 events. 263/478 cut-off events. For 10929/10929 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1862 event pairs, 45 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2553. Up to 397 conditions per place. [2024-06-21 17:05:54,558 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 17 changer transitions 0/95 dead transitions. [2024-06-21 17:05:54,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 95 transitions, 851 flow [2024-06-21 17:05:54,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:54,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 17:05:54,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-21 17:05:54,560 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 659 flow. Second operand 8 states and 101 transitions. [2024-06-21 17:05:54,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 95 transitions, 851 flow [2024-06-21 17:05:54,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 792 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:54,574 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 638 flow [2024-06-21 17:05:54,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=638, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-06-21 17:05:54,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-21 17:05:54,574 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 638 flow [2024-06-21 17:05:54,575 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) [2024-06-21 17:05:54,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:54,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:54,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 17:05:54,575 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)] === [2024-06-21 17:05:54,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -60348135, now seen corresponding path program 3 times [2024-06-21 17:05:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:54,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025535890] [2024-06-21 17:05:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:55,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:55,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025535890] [2024-06-21 17:05:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025535890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:55,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:55,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74607070] [2024-06-21 17:05:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:55,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:55,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 638 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) [2024-06-21 17:05:55,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:55,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:55,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:55,371 INFO L124 PetriNetUnfolderBase]: 278/495 cut-off events. [2024-06-21 17:05:55,371 INFO L125 PetriNetUnfolderBase]: For 11263/11263 co-relation queries the response was YES. [2024-06-21 17:05:55,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2683 conditions, 495 events. 278/495 cut-off events. For 11263/11263 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1891 event pairs, 49 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2635. Up to 417 conditions per place. [2024-06-21 17:05:55,374 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 30 changer transitions 0/97 dead transitions. [2024-06-21 17:05:55,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 874 flow [2024-06-21 17:05:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:05:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:05:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 17:05:55,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 17:05:55,376 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 638 flow. Second operand 9 states and 106 transitions. [2024-06-21 17:05:55,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 874 flow [2024-06-21 17:05:55,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 821 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 17:05:55,389 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 675 flow [2024-06-21 17:05:55,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=675, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-06-21 17:05:55,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-21 17:05:55,390 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 675 flow [2024-06-21 17:05:55,390 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) [2024-06-21 17:05:55,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:55,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 17:05:55,391 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)] === [2024-06-21 17:05:55,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -55879485, now seen corresponding path program 4 times [2024-06-21 17:05:55,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:55,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965810813] [2024-06-21 17:05:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:56,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:56,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965810813] [2024-06-21 17:05:56,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965810813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:56,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:56,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:56,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871093377] [2024-06-21 17:05:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:56,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:56,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:56,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 675 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) [2024-06-21 17:05:56,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:56,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:56,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:56,287 INFO L124 PetriNetUnfolderBase]: 281/500 cut-off events. [2024-06-21 17:05:56,287 INFO L125 PetriNetUnfolderBase]: For 12124/12124 co-relation queries the response was YES. [2024-06-21 17:05:56,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 500 events. 281/500 cut-off events. For 12124/12124 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1922 event pairs, 49 based on Foata normal form. 1/499 useless extension candidates. Maximal degree in co-relation 2706. Up to 408 conditions per place. [2024-06-21 17:05:56,290 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 34 changer transitions 0/106 dead transitions. [2024-06-21 17:05:56,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 1009 flow [2024-06-21 17:05:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:05:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:05:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 17:05:56,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-21 17:05:56,291 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 675 flow. Second operand 9 states and 115 transitions. [2024-06-21 17:05:56,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 1009 flow [2024-06-21 17:05:56,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 937 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 17:05:56,306 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 701 flow [2024-06-21 17:05:56,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-21 17:05:56,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-21 17:05:56,307 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 701 flow [2024-06-21 17:05:56,307 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) [2024-06-21 17:05:56,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:56,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 17:05:56,308 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)] === [2024-06-21 17:05:56,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:56,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1769042723, now seen corresponding path program 1 times [2024-06-21 17:05:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:56,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519644068] [2024-06-21 17:05:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:56,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:56,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519644068] [2024-06-21 17:05:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519644068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:56,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879499581] [2024-06-21 17:05:56,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:56,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:56,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:56,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:56,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:56,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 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) [2024-06-21 17:05:56,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:56,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:56,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:56,988 INFO L124 PetriNetUnfolderBase]: 290/515 cut-off events. [2024-06-21 17:05:56,989 INFO L125 PetriNetUnfolderBase]: For 12806/12806 co-relation queries the response was YES. [2024-06-21 17:05:56,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 515 events. 290/515 cut-off events. For 12806/12806 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2005 event pairs, 48 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 2764. Up to 349 conditions per place. [2024-06-21 17:05:56,992 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 36 changer transitions 0/110 dead transitions. [2024-06-21 17:05:56,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 110 transitions, 1041 flow [2024-06-21 17:05:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 17:05:57,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-21 17:05:57,001 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 701 flow. Second operand 8 states and 110 transitions. [2024-06-21 17:05:57,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 110 transitions, 1041 flow [2024-06-21 17:05:57,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 958 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 17:05:57,016 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 709 flow [2024-06-21 17:05:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=709, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2024-06-21 17:05:57,017 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-21 17:05:57,017 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 709 flow [2024-06-21 17:05:57,017 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) [2024-06-21 17:05:57,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:57,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 17:05:57,017 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)] === [2024-06-21 17:05:57,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1769222213, now seen corresponding path program 2 times [2024-06-21 17:05:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308320036] [2024-06-21 17:05:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:57,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:57,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308320036] [2024-06-21 17:05:57,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308320036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:57,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:57,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179174205] [2024-06-21 17:05:57,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:57,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:57,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:57,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:57,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 709 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) [2024-06-21 17:05:57,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:57,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:57,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:57,753 INFO L124 PetriNetUnfolderBase]: 314/554 cut-off events. [2024-06-21 17:05:57,755 INFO L125 PetriNetUnfolderBase]: For 15056/15056 co-relation queries the response was YES. [2024-06-21 17:05:57,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 554 events. 314/554 cut-off events. For 15056/15056 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2199 event pairs, 56 based on Foata normal form. 3/555 useless extension candidates. Maximal degree in co-relation 3052. Up to 369 conditions per place. [2024-06-21 17:05:57,762 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 36 changer transitions 0/112 dead transitions. [2024-06-21 17:05:57,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 1125 flow [2024-06-21 17:05:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-21 17:05:57,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-06-21 17:05:57,763 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 709 flow. Second operand 8 states and 107 transitions. [2024-06-21 17:05:57,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 1125 flow [2024-06-21 17:05:57,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 112 transitions, 1032 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:57,783 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 730 flow [2024-06-21 17:05:57,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=730, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-06-21 17:05:57,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-21 17:05:57,784 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 730 flow [2024-06-21 17:05:57,785 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) [2024-06-21 17:05:57,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:57,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:57,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 17:05:57,785 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)] === [2024-06-21 17:05:57,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:57,785 INFO L85 PathProgramCache]: Analyzing trace with hash -147871985, now seen corresponding path program 5 times [2024-06-21 17:05:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325464820] [2024-06-21 17:05:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:58,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:58,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325464820] [2024-06-21 17:05:58,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325464820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:58,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:58,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845364750] [2024-06-21 17:05:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:58,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:58,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 730 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) [2024-06-21 17:05:58,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:58,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:58,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:58,559 INFO L124 PetriNetUnfolderBase]: 317/559 cut-off events. [2024-06-21 17:05:58,560 INFO L125 PetriNetUnfolderBase]: For 15225/15225 co-relation queries the response was YES. [2024-06-21 17:05:58,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 559 events. 317/559 cut-off events. For 15225/15225 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2230 event pairs, 59 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 3105. Up to 487 conditions per place. [2024-06-21 17:05:58,563 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 78 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2024-06-21 17:05:58,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 982 flow [2024-06-21 17:05:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 17:05:58,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 17:05:58,564 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 730 flow. Second operand 8 states and 96 transitions. [2024-06-21 17:05:58,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 982 flow [2024-06-21 17:05:58,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 936 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 17:05:58,585 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 763 flow [2024-06-21 17:05:58,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-06-21 17:05:58,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-21 17:05:58,586 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 763 flow [2024-06-21 17:05:58,586 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) [2024-06-21 17:05:58,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:58,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:58,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 17:05:58,586 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)] === [2024-06-21 17:05:58,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1792046687, now seen corresponding path program 3 times [2024-06-21 17:05:58,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333735970] [2024-06-21 17:05:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:59,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:59,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333735970] [2024-06-21 17:05:59,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333735970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:59,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:59,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:59,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293774297] [2024-06-21 17:05:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:59,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:59,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:59,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:59,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 763 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) [2024-06-21 17:05:59,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:59,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:59,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:59,299 INFO L124 PetriNetUnfolderBase]: 311/550 cut-off events. [2024-06-21 17:05:59,299 INFO L125 PetriNetUnfolderBase]: For 15880/15880 co-relation queries the response was YES. [2024-06-21 17:05:59,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 550 events. 311/550 cut-off events. For 15880/15880 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2195 event pairs, 50 based on Foata normal form. 3/551 useless extension candidates. Maximal degree in co-relation 2993. Up to 370 conditions per place. [2024-06-21 17:05:59,303 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 35 changer transitions 0/115 dead transitions. [2024-06-21 17:05:59,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 1101 flow [2024-06-21 17:05:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:05:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:05:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-21 17:05:59,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43951612903225806 [2024-06-21 17:05:59,304 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 763 flow. Second operand 8 states and 109 transitions. [2024-06-21 17:05:59,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 1101 flow [2024-06-21 17:05:59,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 115 transitions, 1040 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 17:05:59,324 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 777 flow [2024-06-21 17:05:59,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=777, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2024-06-21 17:05:59,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-21 17:05:59,325 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 777 flow [2024-06-21 17:05:59,325 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) [2024-06-21 17:05:59,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:59,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:59,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 17:05:59,326 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)] === [2024-06-21 17:05:59,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash -639370469, now seen corresponding path program 4 times [2024-06-21 17:05:59,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:59,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534410109] [2024-06-21 17:05:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:59,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:59,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534410109] [2024-06-21 17:05:59,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534410109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:59,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:05:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056968116] [2024-06-21 17:05:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:05:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:05:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:05:59,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:05:59,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 777 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) [2024-06-21 17:05:59,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:59,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:05:59,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:00,042 INFO L124 PetriNetUnfolderBase]: 320/565 cut-off events. [2024-06-21 17:06:00,042 INFO L125 PetriNetUnfolderBase]: For 17050/17050 co-relation queries the response was YES. [2024-06-21 17:06:00,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3182 conditions, 565 events. 320/565 cut-off events. For 17050/17050 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2279 event pairs, 50 based on Foata normal form. 3/566 useless extension candidates. Maximal degree in co-relation 3128. Up to 491 conditions per place. [2024-06-21 17:06:00,045 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 20 changer transitions 0/112 dead transitions. [2024-06-21 17:06:00,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 112 transitions, 1113 flow [2024-06-21 17:06:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-21 17:06:00,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-21 17:06:00,053 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 777 flow. Second operand 8 states and 98 transitions. [2024-06-21 17:06:00,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 112 transitions, 1113 flow [2024-06-21 17:06:00,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 1029 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:00,074 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 756 flow [2024-06-21 17:06:00,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=756, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-06-21 17:06:00,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-21 17:06:00,075 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 756 flow [2024-06-21 17:06:00,075 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) [2024-06-21 17:06:00,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:00,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:00,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 17:06:00,075 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)] === [2024-06-21 17:06:00,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:00,076 INFO L85 PathProgramCache]: Analyzing trace with hash -631089749, now seen corresponding path program 5 times [2024-06-21 17:06:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:00,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214279588] [2024-06-21 17:06:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:00,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214279588] [2024-06-21 17:06:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214279588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:00,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:00,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:00,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875727831] [2024-06-21 17:06:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:00,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:00,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:00,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:00,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:00,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:00,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 756 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) [2024-06-21 17:06:00,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:00,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:00,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:00,778 INFO L124 PetriNetUnfolderBase]: 329/580 cut-off events. [2024-06-21 17:06:00,778 INFO L125 PetriNetUnfolderBase]: For 17847/17847 co-relation queries the response was YES. [2024-06-21 17:06:00,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3211 conditions, 580 events. 329/580 cut-off events. For 17847/17847 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2351 event pairs, 56 based on Foata normal form. 3/581 useless extension candidates. Maximal degree in co-relation 3156. Up to 541 conditions per place. [2024-06-21 17:06:00,781 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-21 17:06:00,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 1020 flow [2024-06-21 17:06:00,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 17:06:00,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 17:06:00,782 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 756 flow. Second operand 8 states and 92 transitions. [2024-06-21 17:06:00,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 1020 flow [2024-06-21 17:06:00,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 940 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:00,804 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 731 flow [2024-06-21 17:06:00,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2024-06-21 17:06:00,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-21 17:06:00,805 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 731 flow [2024-06-21 17:06:00,805 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) [2024-06-21 17:06:00,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:00,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 17:06:00,805 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)] === [2024-06-21 17:06:00,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash -630792831, now seen corresponding path program 1 times [2024-06-21 17:06:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:00,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100840616] [2024-06-21 17:06:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:00,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:01,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100840616] [2024-06-21 17:06:01,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100840616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:01,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:01,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738577226] [2024-06-21 17:06:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:01,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:01,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:01,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:01,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 731 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) [2024-06-21 17:06:01,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:01,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:01,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:01,778 INFO L124 PetriNetUnfolderBase]: 325/574 cut-off events. [2024-06-21 17:06:01,779 INFO L125 PetriNetUnfolderBase]: For 17229/17229 co-relation queries the response was YES. [2024-06-21 17:06:01,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3099 conditions, 574 events. 325/574 cut-off events. For 17229/17229 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2312 event pairs, 51 based on Foata normal form. 2/574 useless extension candidates. Maximal degree in co-relation 3043. Up to 543 conditions per place. [2024-06-21 17:06:01,782 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2024-06-21 17:06:01,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 991 flow [2024-06-21 17:06:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 17:06:01,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-21 17:06:01,783 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 731 flow. Second operand 9 states and 98 transitions. [2024-06-21 17:06:01,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 991 flow [2024-06-21 17:06:01,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 962 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:01,828 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 759 flow [2024-06-21 17:06:01,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=759, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-21 17:06:01,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-21 17:06:01,829 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 759 flow [2024-06-21 17:06:01,829 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) [2024-06-21 17:06:01,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:01,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:01,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 17:06:01,829 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)] === [2024-06-21 17:06:01,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash 444653227, now seen corresponding path program 6 times [2024-06-21 17:06:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671856022] [2024-06-21 17:06:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:02,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:02,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671856022] [2024-06-21 17:06:02,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671856022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:02,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:02,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147440845] [2024-06-21 17:06:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:02,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:02,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:02,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:02,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:02,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:02,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 759 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) [2024-06-21 17:06:02,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:02,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:02,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:02,588 INFO L124 PetriNetUnfolderBase]: 319/565 cut-off events. [2024-06-21 17:06:02,589 INFO L125 PetriNetUnfolderBase]: For 16988/16988 co-relation queries the response was YES. [2024-06-21 17:06:02,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 565 events. 319/565 cut-off events. For 16988/16988 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2287 event pairs, 51 based on Foata normal form. 3/566 useless extension candidates. Maximal degree in co-relation 2959. Up to 489 conditions per place. [2024-06-21 17:06:02,592 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-21 17:06:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 1019 flow [2024-06-21 17:06:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-21 17:06:02,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-21 17:06:02,593 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 759 flow. Second operand 8 states and 98 transitions. [2024-06-21 17:06:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 1019 flow [2024-06-21 17:06:02,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 973 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:02,619 INFO L231 Difference]: Finished difference. Result has 118 places, 102 transitions, 760 flow [2024-06-21 17:06:02,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=118, PETRI_TRANSITIONS=102} [2024-06-21 17:06:02,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-21 17:06:02,620 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 102 transitions, 760 flow [2024-06-21 17:06:02,620 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) [2024-06-21 17:06:02,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:02,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:02,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 17:06:02,620 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)] === [2024-06-21 17:06:02,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash -639370655, now seen corresponding path program 6 times [2024-06-21 17:06:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474312105] [2024-06-21 17:06:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:03,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:03,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474312105] [2024-06-21 17:06:03,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474312105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:03,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:03,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763134132] [2024-06-21 17:06:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:03,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:03,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:03,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 102 transitions, 760 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) [2024-06-21 17:06:03,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:03,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:03,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:03,369 INFO L124 PetriNetUnfolderBase]: 317/562 cut-off events. [2024-06-21 17:06:03,370 INFO L125 PetriNetUnfolderBase]: For 16334/16334 co-relation queries the response was YES. [2024-06-21 17:06:03,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 562 events. 317/562 cut-off events. For 16334/16334 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2269 event pairs, 55 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 2941. Up to 539 conditions per place. [2024-06-21 17:06:03,373 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 93 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-21 17:06:03,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 109 transitions, 990 flow [2024-06-21 17:06:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-21 17:06:03,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 17:06:03,374 INFO L175 Difference]: Start difference. First operand has 118 places, 102 transitions, 760 flow. Second operand 8 states and 88 transitions. [2024-06-21 17:06:03,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 109 transitions, 990 flow [2024-06-21 17:06:03,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 109 transitions, 928 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:03,399 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 731 flow [2024-06-21 17:06:03,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-06-21 17:06:03,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-21 17:06:03,400 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 731 flow [2024-06-21 17:06:03,400 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) [2024-06-21 17:06:03,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:03,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:03,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 17:06:03,400 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)] === [2024-06-21 17:06:03,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:03,401 INFO L85 PathProgramCache]: Analyzing trace with hash -630781919, now seen corresponding path program 1 times [2024-06-21 17:06:03,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:03,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950145501] [2024-06-21 17:06:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:03,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950145501] [2024-06-21 17:06:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950145501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:04,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025631942] [2024-06-21 17:06:04,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:04,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:04,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:04,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 731 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) [2024-06-21 17:06:04,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:04,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:04,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:04,736 INFO L124 PetriNetUnfolderBase]: 314/557 cut-off events. [2024-06-21 17:06:04,737 INFO L125 PetriNetUnfolderBase]: For 16570/16570 co-relation queries the response was YES. [2024-06-21 17:06:04,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 557 events. 314/557 cut-off events. For 16570/16570 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2220 event pairs, 48 based on Foata normal form. 2/557 useless extension candidates. Maximal degree in co-relation 2820. Up to 528 conditions per place. [2024-06-21 17:06:04,739 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 96 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-21 17:06:04,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 112 transitions, 973 flow [2024-06-21 17:06:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 17:06:04,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 17:06:04,740 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 731 flow. Second operand 9 states and 96 transitions. [2024-06-21 17:06:04,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 112 transitions, 973 flow [2024-06-21 17:06:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 932 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:04,767 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 722 flow [2024-06-21 17:06:04,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=722, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2024-06-21 17:06:04,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-21 17:06:04,767 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 722 flow [2024-06-21 17:06:04,768 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) [2024-06-21 17:06:04,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:04,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 17:06:04,768 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)] === [2024-06-21 17:06:04,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1874456451, now seen corresponding path program 1 times [2024-06-21 17:06:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:04,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559256406] [2024-06-21 17:06:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:04,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559256406] [2024-06-21 17:06:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559256406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997476376] [2024-06-21 17:06:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:05,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:05,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:05,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 722 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) [2024-06-21 17:06:05,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:05,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:05,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:05,643 INFO L124 PetriNetUnfolderBase]: 318/565 cut-off events. [2024-06-21 17:06:05,643 INFO L125 PetriNetUnfolderBase]: For 17502/17502 co-relation queries the response was YES. [2024-06-21 17:06:05,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2924 conditions, 565 events. 318/565 cut-off events. For 17502/17502 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2300 event pairs, 34 based on Foata normal form. 2/565 useless extension candidates. Maximal degree in co-relation 2864. Up to 375 conditions per place. [2024-06-21 17:06:05,646 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 38 changer transitions 0/121 dead transitions. [2024-06-21 17:06:05,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 121 transitions, 1088 flow [2024-06-21 17:06:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 17:06:05,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-21 17:06:05,656 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 722 flow. Second operand 9 states and 109 transitions. [2024-06-21 17:06:05,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 121 transitions, 1088 flow [2024-06-21 17:06:05,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 1049 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:05,686 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 771 flow [2024-06-21 17:06:05,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=771, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-06-21 17:06:05,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-21 17:06:05,686 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 771 flow [2024-06-21 17:06:05,687 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) [2024-06-21 17:06:05,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:05,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:05,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 17:06:05,687 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)] === [2024-06-21 17:06:05,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:05,687 INFO L85 PathProgramCache]: Analyzing trace with hash 347610233, now seen corresponding path program 2 times [2024-06-21 17:06:05,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:05,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997566949] [2024-06-21 17:06:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:05,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:06,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:06,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997566949] [2024-06-21 17:06:06,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997566949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:06,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:06,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379833594] [2024-06-21 17:06:06,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:06,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:06,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:06,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:06,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 771 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) [2024-06-21 17:06:06,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:06,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:06,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:06,541 INFO L124 PetriNetUnfolderBase]: 322/573 cut-off events. [2024-06-21 17:06:06,541 INFO L125 PetriNetUnfolderBase]: For 18413/18413 co-relation queries the response was YES. [2024-06-21 17:06:06,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3026 conditions, 573 events. 322/573 cut-off events. For 18413/18413 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2341 event pairs, 55 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 2966. Up to 460 conditions per place. [2024-06-21 17:06:06,544 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 37 changer transitions 0/119 dead transitions. [2024-06-21 17:06:06,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 119 transitions, 1055 flow [2024-06-21 17:06:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 17:06:06,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-21 17:06:06,553 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 771 flow. Second operand 9 states and 109 transitions. [2024-06-21 17:06:06,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 119 transitions, 1055 flow [2024-06-21 17:06:06,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 119 transitions, 977 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:06,586 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 783 flow [2024-06-21 17:06:06,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=783, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-21 17:06:06,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-21 17:06:06,587 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 783 flow [2024-06-21 17:06:06,587 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) [2024-06-21 17:06:06,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:06,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:06,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 17:06:06,588 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)] === [2024-06-21 17:06:06,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1874366086, now seen corresponding path program 1 times [2024-06-21 17:06:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986892557] [2024-06-21 17:06:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:07,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986892557] [2024-06-21 17:06:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986892557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588484301] [2024-06-21 17:06:07,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:07,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:07,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:07,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 783 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) [2024-06-21 17:06:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:07,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:07,538 INFO L124 PetriNetUnfolderBase]: 341/604 cut-off events. [2024-06-21 17:06:07,539 INFO L125 PetriNetUnfolderBase]: For 21633/21633 co-relation queries the response was YES. [2024-06-21 17:06:07,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 604 events. 341/604 cut-off events. For 21633/21633 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2514 event pairs, 51 based on Foata normal form. 3/605 useless extension candidates. Maximal degree in co-relation 3173. Up to 309 conditions per place. [2024-06-21 17:06:07,542 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 73 selfloop transitions, 59 changer transitions 0/134 dead transitions. [2024-06-21 17:06:07,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 134 transitions, 1227 flow [2024-06-21 17:06:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:06:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:06:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 17:06:07,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-21 17:06:07,543 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 783 flow. Second operand 12 states and 151 transitions. [2024-06-21 17:06:07,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 134 transitions, 1227 flow [2024-06-21 17:06:07,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 1137 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:07,580 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 886 flow [2024-06-21 17:06:07,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=886, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-06-21 17:06:07,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-21 17:06:07,581 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 886 flow [2024-06-21 17:06:07,581 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) [2024-06-21 17:06:07,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:07,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:07,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 17:06:07,581 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)] === [2024-06-21 17:06:07,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:07,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1874369961, now seen corresponding path program 3 times [2024-06-21 17:06:07,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:07,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804317663] [2024-06-21 17:06:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:07,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:08,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804317663] [2024-06-21 17:06:08,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804317663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:08,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:08,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:08,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438682352] [2024-06-21 17:06:08,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:08,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:08,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:08,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:08,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 886 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) [2024-06-21 17:06:08,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:08,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:08,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:08,438 INFO L124 PetriNetUnfolderBase]: 345/612 cut-off events. [2024-06-21 17:06:08,438 INFO L125 PetriNetUnfolderBase]: For 22143/22143 co-relation queries the response was YES. [2024-06-21 17:06:08,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3448 conditions, 612 events. 345/612 cut-off events. For 22143/22143 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2563 event pairs, 57 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 3386. Up to 485 conditions per place. [2024-06-21 17:06:08,442 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 38 changer transitions 0/127 dead transitions. [2024-06-21 17:06:08,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 1185 flow [2024-06-21 17:06:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 17:06:08,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 17:06:08,457 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 886 flow. Second operand 9 states and 111 transitions. [2024-06-21 17:06:08,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 1185 flow [2024-06-21 17:06:08,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 1099 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:08,496 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 889 flow [2024-06-21 17:06:08,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=889, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2024-06-21 17:06:08,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 17:06:08,498 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 889 flow [2024-06-21 17:06:08,498 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) [2024-06-21 17:06:08,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:08,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:08,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 17:06:08,503 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)] === [2024-06-21 17:06:08,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash 434446193, now seen corresponding path program 4 times [2024-06-21 17:06:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:08,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288032176] [2024-06-21 17:06:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288032176] [2024-06-21 17:06:09,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288032176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:09,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:09,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:09,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109917665] [2024-06-21 17:06:09,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:09,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:09,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:09,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:09,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 889 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) [2024-06-21 17:06:09,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:09,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:09,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:09,345 INFO L124 PetriNetUnfolderBase]: 349/620 cut-off events. [2024-06-21 17:06:09,346 INFO L125 PetriNetUnfolderBase]: For 23166/23166 co-relation queries the response was YES. [2024-06-21 17:06:09,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 620 events. 349/620 cut-off events. For 23166/23166 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2610 event pairs, 61 based on Foata normal form. 2/620 useless extension candidates. Maximal degree in co-relation 3453. Up to 542 conditions per place. [2024-06-21 17:06:09,349 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 27 changer transitions 0/124 dead transitions. [2024-06-21 17:06:09,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 124 transitions, 1172 flow [2024-06-21 17:06:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 17:06:09,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 17:06:09,350 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 889 flow. Second operand 9 states and 106 transitions. [2024-06-21 17:06:09,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 124 transitions, 1172 flow [2024-06-21 17:06:09,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 1094 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:09,392 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 880 flow [2024-06-21 17:06:09,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=880, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-06-21 17:06:09,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-21 17:06:09,392 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 880 flow [2024-06-21 17:06:09,392 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) [2024-06-21 17:06:09,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:09,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:09,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 17:06:09,393 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)] === [2024-06-21 17:06:09,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash 434298323, now seen corresponding path program 5 times [2024-06-21 17:06:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929160989] [2024-06-21 17:06:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:09,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:09,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:09,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929160989] [2024-06-21 17:06:09,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929160989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:09,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:09,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:09,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756648787] [2024-06-21 17:06:09,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:09,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:09,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:09,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:10,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:10,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 880 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) [2024-06-21 17:06:10,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:10,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:10,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:10,226 INFO L124 PetriNetUnfolderBase]: 360/641 cut-off events. [2024-06-21 17:06:10,226 INFO L125 PetriNetUnfolderBase]: For 26055/26055 co-relation queries the response was YES. [2024-06-21 17:06:10,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 641 events. 360/641 cut-off events. For 26055/26055 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2753 event pairs, 62 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 3621. Up to 534 conditions per place. [2024-06-21 17:06:10,229 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-06-21 17:06:10,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 128 transitions, 1272 flow [2024-06-21 17:06:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 17:06:10,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-21 17:06:10,231 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 880 flow. Second operand 9 states and 109 transitions. [2024-06-21 17:06:10,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 128 transitions, 1272 flow [2024-06-21 17:06:10,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 1214 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:10,278 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 914 flow [2024-06-21 17:06:10,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=914, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-21 17:06:10,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-21 17:06:10,279 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 914 flow [2024-06-21 17:06:10,279 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) [2024-06-21 17:06:10,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:10,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:10,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 17:06:10,280 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)] === [2024-06-21 17:06:10,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash -273458461, now seen corresponding path program 6 times [2024-06-21 17:06:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912556263] [2024-06-21 17:06:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:10,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912556263] [2024-06-21 17:06:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912556263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:10,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857989498] [2024-06-21 17:06:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:10,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:10,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:10,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:10,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 914 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) [2024-06-21 17:06:10,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:10,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:10,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:11,144 INFO L124 PetriNetUnfolderBase]: 357/636 cut-off events. [2024-06-21 17:06:11,144 INFO L125 PetriNetUnfolderBase]: For 25511/25511 co-relation queries the response was YES. [2024-06-21 17:06:11,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 636 events. 357/636 cut-off events. For 25511/25511 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2726 event pairs, 63 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 3558. Up to 552 conditions per place. [2024-06-21 17:06:11,147 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2024-06-21 17:06:11,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 126 transitions, 1192 flow [2024-06-21 17:06:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 17:06:11,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 17:06:11,148 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 914 flow. Second operand 9 states and 107 transitions. [2024-06-21 17:06:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 126 transitions, 1192 flow [2024-06-21 17:06:11,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 126 transitions, 1139 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:11,202 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 925 flow [2024-06-21 17:06:11,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=925, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-06-21 17:06:11,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-21 17:06:11,203 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 925 flow [2024-06-21 17:06:11,203 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) [2024-06-21 17:06:11,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:11,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 17:06:11,203 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)] === [2024-06-21 17:06:11,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1732266891, now seen corresponding path program 7 times [2024-06-21 17:06:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:11,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043537546] [2024-06-21 17:06:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:11,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:11,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043537546] [2024-06-21 17:06:11,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043537546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:11,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:11,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:11,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618371713] [2024-06-21 17:06:11,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:11,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:11,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:11,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:11,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 925 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) [2024-06-21 17:06:11,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:11,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:11,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:12,060 INFO L124 PetriNetUnfolderBase]: 361/644 cut-off events. [2024-06-21 17:06:12,060 INFO L125 PetriNetUnfolderBase]: For 26666/26666 co-relation queries the response was YES. [2024-06-21 17:06:12,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3708 conditions, 644 events. 361/644 cut-off events. For 26666/26666 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2765 event pairs, 42 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 3640. Up to 507 conditions per place. [2024-06-21 17:06:12,064 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 38 changer transitions 0/135 dead transitions. [2024-06-21 17:06:12,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 135 transitions, 1346 flow [2024-06-21 17:06:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 17:06:12,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 17:06:12,065 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 925 flow. Second operand 9 states and 116 transitions. [2024-06-21 17:06:12,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 135 transitions, 1346 flow [2024-06-21 17:06:12,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1270 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:12,119 INFO L231 Difference]: Finished difference. Result has 139 places, 115 transitions, 942 flow [2024-06-21 17:06:12,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=942, PETRI_PLACES=139, PETRI_TRANSITIONS=115} [2024-06-21 17:06:12,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-21 17:06:12,120 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 115 transitions, 942 flow [2024-06-21 17:06:12,120 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) [2024-06-21 17:06:12,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:12,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 17:06:12,121 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)] === [2024-06-21 17:06:12,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash -994399332, now seen corresponding path program 2 times [2024-06-21 17:06:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865338165] [2024-06-21 17:06:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865338165] [2024-06-21 17:06:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865338165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:12,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072911786] [2024-06-21 17:06:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:12,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:12,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:12,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 115 transitions, 942 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) [2024-06-21 17:06:12,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:12,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:12,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:13,068 INFO L124 PetriNetUnfolderBase]: 370/659 cut-off events. [2024-06-21 17:06:13,068 INFO L125 PetriNetUnfolderBase]: For 28866/28866 co-relation queries the response was YES. [2024-06-21 17:06:13,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3823 conditions, 659 events. 370/659 cut-off events. For 28866/28866 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2864 event pairs, 47 based on Foata normal form. 3/660 useless extension candidates. Maximal degree in co-relation 3755. Up to 391 conditions per place. [2024-06-21 17:06:13,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 87 selfloop transitions, 57 changer transitions 0/146 dead transitions. [2024-06-21 17:06:13,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 146 transitions, 1433 flow [2024-06-21 17:06:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:13,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 17:06:13,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-21 17:06:13,072 INFO L175 Difference]: Start difference. First operand has 139 places, 115 transitions, 942 flow. Second operand 11 states and 147 transitions. [2024-06-21 17:06:13,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 146 transitions, 1433 flow [2024-06-21 17:06:13,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 146 transitions, 1320 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:13,123 INFO L231 Difference]: Finished difference. Result has 142 places, 118 transitions, 975 flow [2024-06-21 17:06:13,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=975, PETRI_PLACES=142, PETRI_TRANSITIONS=118} [2024-06-21 17:06:13,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-21 17:06:13,124 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 118 transitions, 975 flow [2024-06-21 17:06:13,124 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) [2024-06-21 17:06:13,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:13,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 17:06:13,124 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)] === [2024-06-21 17:06:13,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -994399487, now seen corresponding path program 8 times [2024-06-21 17:06:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879548125] [2024-06-21 17:06:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:13,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879548125] [2024-06-21 17:06:13,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879548125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:13,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:13,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:13,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011700414] [2024-06-21 17:06:13,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:13,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:13,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:13,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:13,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 118 transitions, 975 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) [2024-06-21 17:06:13,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:13,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:13,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:13,961 INFO L124 PetriNetUnfolderBase]: 377/672 cut-off events. [2024-06-21 17:06:13,961 INFO L125 PetriNetUnfolderBase]: For 29226/29226 co-relation queries the response was YES. [2024-06-21 17:06:13,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3926 conditions, 672 events. 377/672 cut-off events. For 29226/29226 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2939 event pairs, 65 based on Foata normal form. 2/672 useless extension candidates. Maximal degree in co-relation 3858. Up to 573 conditions per place. [2024-06-21 17:06:13,965 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 38 changer transitions 0/139 dead transitions. [2024-06-21 17:06:13,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 139 transitions, 1329 flow [2024-06-21 17:06:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 17:06:13,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-21 17:06:13,966 INFO L175 Difference]: Start difference. First operand has 142 places, 118 transitions, 975 flow. Second operand 9 states and 114 transitions. [2024-06-21 17:06:13,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 139 transitions, 1329 flow [2024-06-21 17:06:14,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 139 transitions, 1201 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:14,028 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 959 flow [2024-06-21 17:06:14,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=959, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-06-21 17:06:14,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-21 17:06:14,028 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 959 flow [2024-06-21 17:06:14,028 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) [2024-06-21 17:06:14,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:14,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:14,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 17:06:14,029 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)] === [2024-06-21 17:06:14,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash -994255337, now seen corresponding path program 9 times [2024-06-21 17:06:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:14,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621035069] [2024-06-21 17:06:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:14,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621035069] [2024-06-21 17:06:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621035069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:14,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:14,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:14,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083655962] [2024-06-21 17:06:14,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:14,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:14,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:14,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 959 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) [2024-06-21 17:06:14,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:14,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:14,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:15,066 INFO L124 PetriNetUnfolderBase]: 381/680 cut-off events. [2024-06-21 17:06:15,066 INFO L125 PetriNetUnfolderBase]: For 30402/30402 co-relation queries the response was YES. [2024-06-21 17:06:15,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 680 events. 381/680 cut-off events. For 30402/30402 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2978 event pairs, 65 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 3812. Up to 602 conditions per place. [2024-06-21 17:06:15,070 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 105 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2024-06-21 17:06:15,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1282 flow [2024-06-21 17:06:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 17:06:15,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-21 17:06:15,071 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 959 flow. Second operand 9 states and 109 transitions. [2024-06-21 17:06:15,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1282 flow [2024-06-21 17:06:15,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 137 transitions, 1216 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:15,134 INFO L231 Difference]: Finished difference. Result has 146 places, 122 transitions, 972 flow [2024-06-21 17:06:15,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=972, PETRI_PLACES=146, PETRI_TRANSITIONS=122} [2024-06-21 17:06:15,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-21 17:06:15,134 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 122 transitions, 972 flow [2024-06-21 17:06:15,134 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) [2024-06-21 17:06:15,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:15,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:15,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 17:06:15,135 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)] === [2024-06-21 17:06:15,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -281126718, now seen corresponding path program 3 times [2024-06-21 17:06:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:15,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133382144] [2024-06-21 17:06:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:15,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:15,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133382144] [2024-06-21 17:06:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133382144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:15,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:15,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402412156] [2024-06-21 17:06:15,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:15,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:15,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:15,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:15,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 122 transitions, 972 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) [2024-06-21 17:06:15,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:15,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:15,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:16,045 INFO L124 PetriNetUnfolderBase]: 390/695 cut-off events. [2024-06-21 17:06:16,046 INFO L125 PetriNetUnfolderBase]: For 32836/32836 co-relation queries the response was YES. [2024-06-21 17:06:16,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3969 conditions, 695 events. 390/695 cut-off events. For 32836/32836 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3092 event pairs, 56 based on Foata normal form. 3/696 useless extension candidates. Maximal degree in co-relation 3899. Up to 495 conditions per place. [2024-06-21 17:06:16,050 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 42 changer transitions 0/145 dead transitions. [2024-06-21 17:06:16,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 1353 flow [2024-06-21 17:06:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 17:06:16,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 17:06:16,051 INFO L175 Difference]: Start difference. First operand has 146 places, 122 transitions, 972 flow. Second operand 9 states and 119 transitions. [2024-06-21 17:06:16,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 1353 flow [2024-06-21 17:06:16,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 1269 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:16,108 INFO L231 Difference]: Finished difference. Result has 147 places, 125 transitions, 1009 flow [2024-06-21 17:06:16,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1009, PETRI_PLACES=147, PETRI_TRANSITIONS=125} [2024-06-21 17:06:16,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-21 17:06:16,109 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 125 transitions, 1009 flow [2024-06-21 17:06:16,109 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) [2024-06-21 17:06:16,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:16,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:16,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 17:06:16,110 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)] === [2024-06-21 17:06:16,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash -288855830, now seen corresponding path program 4 times [2024-06-21 17:06:16,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:16,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554409361] [2024-06-21 17:06:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:16,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554409361] [2024-06-21 17:06:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554409361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:16,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:16,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:16,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512685626] [2024-06-21 17:06:16,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:16,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:16,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:16,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:16,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 125 transitions, 1009 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) [2024-06-21 17:06:16,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:16,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:16,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:16,981 INFO L124 PetriNetUnfolderBase]: 399/710 cut-off events. [2024-06-21 17:06:16,981 INFO L125 PetriNetUnfolderBase]: For 34383/34383 co-relation queries the response was YES. [2024-06-21 17:06:16,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 710 events. 399/710 cut-off events. For 34383/34383 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3170 event pairs, 56 based on Foata normal form. 3/711 useless extension candidates. Maximal degree in co-relation 4059. Up to 510 conditions per place. [2024-06-21 17:06:16,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 43 changer transitions 0/146 dead transitions. [2024-06-21 17:06:16,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 1388 flow [2024-06-21 17:06:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 17:06:16,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 17:06:16,986 INFO L175 Difference]: Start difference. First operand has 147 places, 125 transitions, 1009 flow. Second operand 9 states and 116 transitions. [2024-06-21 17:06:16,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 1388 flow [2024-06-21 17:06:17,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 1298 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:17,057 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1048 flow [2024-06-21 17:06:17,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1048, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-06-21 17:06:17,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-21 17:06:17,057 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1048 flow [2024-06-21 17:06:17,058 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) [2024-06-21 17:06:17,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:17,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:17,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 17:06:17,058 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)] === [2024-06-21 17:06:17,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash -281132453, now seen corresponding path program 10 times [2024-06-21 17:06:17,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:17,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397128389] [2024-06-21 17:06:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:17,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:17,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:17,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397128389] [2024-06-21 17:06:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397128389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:17,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756455204] [2024-06-21 17:06:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:17,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:17,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:17,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1048 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) [2024-06-21 17:06:17,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:17,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:17,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:17,926 INFO L124 PetriNetUnfolderBase]: 403/718 cut-off events. [2024-06-21 17:06:17,926 INFO L125 PetriNetUnfolderBase]: For 34603/34603 co-relation queries the response was YES. [2024-06-21 17:06:17,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 718 events. 403/718 cut-off events. For 34603/34603 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3208 event pairs, 69 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4137. Up to 640 conditions per place. [2024-06-21 17:06:17,930 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 27 changer transitions 0/141 dead transitions. [2024-06-21 17:06:17,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 141 transitions, 1371 flow [2024-06-21 17:06:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 17:06:17,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 17:06:17,931 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1048 flow. Second operand 9 states and 105 transitions. [2024-06-21 17:06:17,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 141 transitions, 1371 flow [2024-06-21 17:06:17,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 141 transitions, 1273 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:17,993 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1025 flow [2024-06-21 17:06:17,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1025, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-21 17:06:17,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-21 17:06:17,993 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1025 flow [2024-06-21 17:06:17,993 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) [2024-06-21 17:06:17,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:17,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:17,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 17:06:17,993 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)] === [2024-06-21 17:06:17,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:17,994 INFO L85 PathProgramCache]: Analyzing trace with hash -281132298, now seen corresponding path program 5 times [2024-06-21 17:06:17,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:17,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908640339] [2024-06-21 17:06:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908640339] [2024-06-21 17:06:18,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908640339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:18,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701113789] [2024-06-21 17:06:18,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:18,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:18,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:18,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1025 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) [2024-06-21 17:06:18,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:18,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:18,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:18,834 INFO L124 PetriNetUnfolderBase]: 406/723 cut-off events. [2024-06-21 17:06:18,834 INFO L125 PetriNetUnfolderBase]: For 34528/34528 co-relation queries the response was YES. [2024-06-21 17:06:18,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 723 events. 406/723 cut-off events. For 34528/34528 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3245 event pairs, 60 based on Foata normal form. 1/722 useless extension candidates. Maximal degree in co-relation 4106. Up to 604 conditions per place. [2024-06-21 17:06:18,839 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 39 changer transitions 0/158 dead transitions. [2024-06-21 17:06:18,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 158 transitions, 1508 flow [2024-06-21 17:06:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 17:06:18,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-21 17:06:18,840 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1025 flow. Second operand 9 states and 110 transitions. [2024-06-21 17:06:18,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 158 transitions, 1508 flow [2024-06-21 17:06:18,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 158 transitions, 1444 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:18,912 INFO L231 Difference]: Finished difference. Result has 157 places, 145 transitions, 1245 flow [2024-06-21 17:06:18,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1245, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2024-06-21 17:06:18,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-21 17:06:18,912 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 1245 flow [2024-06-21 17:06:18,913 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) [2024-06-21 17:06:18,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:18,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:18,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 17:06:18,913 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)] === [2024-06-21 17:06:18,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:18,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1920259521, now seen corresponding path program 1 times [2024-06-21 17:06:18,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:18,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963941367] [2024-06-21 17:06:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:19,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:19,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963941367] [2024-06-21 17:06:19,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963941367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:19,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:19,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:19,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761342720] [2024-06-21 17:06:19,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:19,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:19,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 1245 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) [2024-06-21 17:06:19,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:19,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:19,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:19,760 INFO L124 PetriNetUnfolderBase]: 402/717 cut-off events. [2024-06-21 17:06:19,760 INFO L125 PetriNetUnfolderBase]: For 34736/34736 co-relation queries the response was YES. [2024-06-21 17:06:19,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 717 events. 402/717 cut-off events. For 34736/34736 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3191 event pairs, 59 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4170. Up to 678 conditions per place. [2024-06-21 17:06:19,764 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 140 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-06-21 17:06:19,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 158 transitions, 1595 flow [2024-06-21 17:06:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 17:06:19,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-21 17:06:19,765 INFO L175 Difference]: Start difference. First operand has 157 places, 145 transitions, 1245 flow. Second operand 9 states and 100 transitions. [2024-06-21 17:06:19,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 158 transitions, 1595 flow [2024-06-21 17:06:19,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 158 transitions, 1545 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-21 17:06:19,830 INFO L231 Difference]: Finished difference. Result has 163 places, 147 transitions, 1250 flow [2024-06-21 17:06:19,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1250, PETRI_PLACES=163, PETRI_TRANSITIONS=147} [2024-06-21 17:06:19,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-21 17:06:19,831 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 1250 flow [2024-06-21 17:06:19,831 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) [2024-06-21 17:06:19,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:19,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:19,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 17:06:19,831 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)] === [2024-06-21 17:06:19,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1654554584, now seen corresponding path program 6 times [2024-06-21 17:06:19,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:19,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571719804] [2024-06-21 17:06:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571719804] [2024-06-21 17:06:20,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571719804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:20,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:20,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340431379] [2024-06-21 17:06:20,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:20,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:20,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:20,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 147 transitions, 1250 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) [2024-06-21 17:06:20,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:20,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:20,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:20,679 INFO L124 PetriNetUnfolderBase]: 411/732 cut-off events. [2024-06-21 17:06:20,680 INFO L125 PetriNetUnfolderBase]: For 37335/37335 co-relation queries the response was YES. [2024-06-21 17:06:20,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 732 events. 411/732 cut-off events. For 37335/37335 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3306 event pairs, 59 based on Foata normal form. 3/733 useless extension candidates. Maximal degree in co-relation 4250. Up to 645 conditions per place. [2024-06-21 17:06:20,684 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 27 changer transitions 0/164 dead transitions. [2024-06-21 17:06:20,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 164 transitions, 1651 flow [2024-06-21 17:06:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 17:06:20,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-21 17:06:20,685 INFO L175 Difference]: Start difference. First operand has 163 places, 147 transitions, 1250 flow. Second operand 9 states and 109 transitions. [2024-06-21 17:06:20,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 164 transitions, 1651 flow [2024-06-21 17:06:20,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 164 transitions, 1612 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:20,751 INFO L231 Difference]: Finished difference. Result has 165 places, 150 transitions, 1319 flow [2024-06-21 17:06:20,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1319, PETRI_PLACES=165, PETRI_TRANSITIONS=150} [2024-06-21 17:06:20,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-21 17:06:20,751 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 150 transitions, 1319 flow [2024-06-21 17:06:20,752 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) [2024-06-21 17:06:20,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:20,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:20,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 17:06:20,752 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)] === [2024-06-21 17:06:20,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347039, now seen corresponding path program 11 times [2024-06-21 17:06:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310574839] [2024-06-21 17:06:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310574839] [2024-06-21 17:06:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310574839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:21,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:21,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:21,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523792660] [2024-06-21 17:06:21,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:21,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:21,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:21,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 150 transitions, 1319 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) [2024-06-21 17:06:21,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:21,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:21,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:21,602 INFO L124 PetriNetUnfolderBase]: 408/727 cut-off events. [2024-06-21 17:06:21,602 INFO L125 PetriNetUnfolderBase]: For 34468/34468 co-relation queries the response was YES. [2024-06-21 17:06:21,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 727 events. 408/727 cut-off events. For 34468/34468 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3257 event pairs, 66 based on Foata normal form. 2/727 useless extension candidates. Maximal degree in co-relation 4188. Up to 698 conditions per place. [2024-06-21 17:06:21,607 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 142 selfloop transitions, 15 changer transitions 0/159 dead transitions. [2024-06-21 17:06:21,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 159 transitions, 1653 flow [2024-06-21 17:06:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 17:06:21,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-21 17:06:21,607 INFO L175 Difference]: Start difference. First operand has 165 places, 150 transitions, 1319 flow. Second operand 9 states and 97 transitions. [2024-06-21 17:06:21,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 159 transitions, 1653 flow [2024-06-21 17:06:21,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 159 transitions, 1570 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:21,676 INFO L231 Difference]: Finished difference. Result has 167 places, 150 transitions, 1270 flow [2024-06-21 17:06:21,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1270, PETRI_PLACES=167, PETRI_TRANSITIONS=150} [2024-06-21 17:06:21,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-21 17:06:21,676 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 150 transitions, 1270 flow [2024-06-21 17:06:21,676 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) [2024-06-21 17:06:21,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:21,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:21,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 17:06:21,677 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)] === [2024-06-21 17:06:21,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:21,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347194, now seen corresponding path program 7 times [2024-06-21 17:06:21,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:21,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173937121] [2024-06-21 17:06:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:21,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:22,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173937121] [2024-06-21 17:06:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173937121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:22,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:22,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889061212] [2024-06-21 17:06:22,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:22,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:22,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:22,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:22,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:22,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 150 transitions, 1270 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) [2024-06-21 17:06:22,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:22,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:22,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:22,602 INFO L124 PetriNetUnfolderBase]: 417/742 cut-off events. [2024-06-21 17:06:22,602 INFO L125 PetriNetUnfolderBase]: For 37009/37009 co-relation queries the response was YES. [2024-06-21 17:06:22,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4308 conditions, 742 events. 417/742 cut-off events. For 37009/37009 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3357 event pairs, 53 based on Foata normal form. 3/743 useless extension candidates. Maximal degree in co-relation 4227. Up to 624 conditions per place. [2024-06-21 17:06:22,607 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 36 changer transitions 0/170 dead transitions. [2024-06-21 17:06:22,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 1805 flow [2024-06-21 17:06:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-21 17:06:22,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-21 17:06:22,609 INFO L175 Difference]: Start difference. First operand has 167 places, 150 transitions, 1270 flow. Second operand 10 states and 121 transitions. [2024-06-21 17:06:22,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 1805 flow [2024-06-21 17:06:22,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 170 transitions, 1724 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:22,720 INFO L231 Difference]: Finished difference. Result has 168 places, 153 transitions, 1316 flow [2024-06-21 17:06:22,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1316, PETRI_PLACES=168, PETRI_TRANSITIONS=153} [2024-06-21 17:06:22,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-21 17:06:22,720 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 153 transitions, 1316 flow [2024-06-21 17:06:22,720 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) [2024-06-21 17:06:22,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:22,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:22,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 17:06:22,721 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)] === [2024-06-21 17:06:22,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1031767490, now seen corresponding path program 8 times [2024-06-21 17:06:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673640075] [2024-06-21 17:06:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:23,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673640075] [2024-06-21 17:06:23,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673640075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:23,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:23,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:23,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733388906] [2024-06-21 17:06:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:23,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:23,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:23,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:23,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 153 transitions, 1316 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) [2024-06-21 17:06:23,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:23,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:23,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:23,687 INFO L124 PetriNetUnfolderBase]: 415/739 cut-off events. [2024-06-21 17:06:23,688 INFO L125 PetriNetUnfolderBase]: For 33773/33773 co-relation queries the response was YES. [2024-06-21 17:06:23,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 739 events. 415/739 cut-off events. For 33773/33773 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3340 event pairs, 64 based on Foata normal form. 1/738 useless extension candidates. Maximal degree in co-relation 4193. Up to 713 conditions per place. [2024-06-21 17:06:23,691 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 16 changer transitions 0/165 dead transitions. [2024-06-21 17:06:23,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 165 transitions, 1700 flow [2024-06-21 17:06:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 17:06:23,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-21 17:06:23,692 INFO L175 Difference]: Start difference. First operand has 168 places, 153 transitions, 1316 flow. Second operand 9 states and 97 transitions. [2024-06-21 17:06:23,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 165 transitions, 1700 flow [2024-06-21 17:06:23,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 165 transitions, 1574 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:23,758 INFO L231 Difference]: Finished difference. Result has 170 places, 157 transitions, 1276 flow [2024-06-21 17:06:23,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1276, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2024-06-21 17:06:23,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-21 17:06:23,758 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 1276 flow [2024-06-21 17:06:23,759 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) [2024-06-21 17:06:23,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:23,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 17:06:23,759 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)] === [2024-06-21 17:06:23,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1662036736, now seen corresponding path program 1 times [2024-06-21 17:06:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:23,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099439070] [2024-06-21 17:06:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:24,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:24,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099439070] [2024-06-21 17:06:24,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099439070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:24,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:24,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:24,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927780800] [2024-06-21 17:06:24,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:24,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:24,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:24,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:24,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:24,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 157 transitions, 1276 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) [2024-06-21 17:06:24,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:24,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:24,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:24,734 INFO L124 PetriNetUnfolderBase]: 462/832 cut-off events. [2024-06-21 17:06:24,735 INFO L125 PetriNetUnfolderBase]: For 59065/59065 co-relation queries the response was YES. [2024-06-21 17:06:24,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 832 events. 462/832 cut-off events. For 59065/59065 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3870 event pairs, 48 based on Foata normal form. 2/832 useless extension candidates. Maximal degree in co-relation 5181. Up to 317 conditions per place. [2024-06-21 17:06:24,740 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 79 changer transitions 0/187 dead transitions. [2024-06-21 17:06:24,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 187 transitions, 1982 flow [2024-06-21 17:06:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 17:06:24,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-21 17:06:24,741 INFO L175 Difference]: Start difference. First operand has 170 places, 157 transitions, 1276 flow. Second operand 10 states and 132 transitions. [2024-06-21 17:06:24,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 187 transitions, 1982 flow [2024-06-21 17:06:24,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 187 transitions, 1947 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-21 17:06:24,847 INFO L231 Difference]: Finished difference. Result has 176 places, 158 transitions, 1411 flow [2024-06-21 17:06:24,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1411, PETRI_PLACES=176, PETRI_TRANSITIONS=158} [2024-06-21 17:06:24,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-21 17:06:24,847 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 158 transitions, 1411 flow [2024-06-21 17:06:24,847 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) [2024-06-21 17:06:24,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:24,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:24,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 17:06:24,847 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)] === [2024-06-21 17:06:24,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1720249342, now seen corresponding path program 1 times [2024-06-21 17:06:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454657333] [2024-06-21 17:06:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:25,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:25,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454657333] [2024-06-21 17:06:25,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454657333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:25,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:25,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:25,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203520003] [2024-06-21 17:06:25,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:25,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:25,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:25,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 158 transitions, 1411 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) [2024-06-21 17:06:25,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:25,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:25,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:25,882 INFO L124 PetriNetUnfolderBase]: 471/847 cut-off events. [2024-06-21 17:06:25,882 INFO L125 PetriNetUnfolderBase]: For 61275/61275 co-relation queries the response was YES. [2024-06-21 17:06:25,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5561 conditions, 847 events. 471/847 cut-off events. For 61275/61275 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3984 event pairs, 65 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 5475. Up to 468 conditions per place. [2024-06-21 17:06:25,886 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 79 changer transitions 0/184 dead transitions. [2024-06-21 17:06:25,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 184 transitions, 1995 flow [2024-06-21 17:06:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 17:06:25,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 17:06:25,887 INFO L175 Difference]: Start difference. First operand has 176 places, 158 transitions, 1411 flow. Second operand 10 states and 129 transitions. [2024-06-21 17:06:25,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 184 transitions, 1995 flow [2024-06-21 17:06:26,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 184 transitions, 1797 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:26,023 INFO L231 Difference]: Finished difference. Result has 178 places, 164 transitions, 1439 flow [2024-06-21 17:06:26,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1439, PETRI_PLACES=178, PETRI_TRANSITIONS=164} [2024-06-21 17:06:26,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-21 17:06:26,024 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 164 transitions, 1439 flow [2024-06-21 17:06:26,024 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) [2024-06-21 17:06:26,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:26,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:26,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 17:06:26,025 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)] === [2024-06-21 17:06:26,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2108983646, now seen corresponding path program 2 times [2024-06-21 17:06:26,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:26,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789771698] [2024-06-21 17:06:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:26,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:26,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789771698] [2024-06-21 17:06:26,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789771698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:26,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:26,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:26,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703166718] [2024-06-21 17:06:26,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:26,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:26,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:26,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:26,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:26,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:26,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 164 transitions, 1439 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) [2024-06-21 17:06:26,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:26,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:26,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:27,007 INFO L124 PetriNetUnfolderBase]: 482/868 cut-off events. [2024-06-21 17:06:27,007 INFO L125 PetriNetUnfolderBase]: For 66739/66739 co-relation queries the response was YES. [2024-06-21 17:06:27,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5739 conditions, 868 events. 482/868 cut-off events. For 66739/66739 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4109 event pairs, 85 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 5653. Up to 662 conditions per place. [2024-06-21 17:06:27,012 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 128 selfloop transitions, 59 changer transitions 0/189 dead transitions. [2024-06-21 17:06:27,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 189 transitions, 2027 flow [2024-06-21 17:06:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 17:06:27,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 17:06:27,013 INFO L175 Difference]: Start difference. First operand has 178 places, 164 transitions, 1439 flow. Second operand 10 states and 124 transitions. [2024-06-21 17:06:27,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 189 transitions, 2027 flow [2024-06-21 17:06:27,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 189 transitions, 1950 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:27,144 INFO L231 Difference]: Finished difference. Result has 184 places, 170 transitions, 1575 flow [2024-06-21 17:06:27,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1575, PETRI_PLACES=184, PETRI_TRANSITIONS=170} [2024-06-21 17:06:27,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-21 17:06:27,145 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 170 transitions, 1575 flow [2024-06-21 17:06:27,145 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) [2024-06-21 17:06:27,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:27,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:27,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 17:06:27,146 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)] === [2024-06-21 17:06:27,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2109098966, now seen corresponding path program 3 times [2024-06-21 17:06:27,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:27,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598368589] [2024-06-21 17:06:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:27,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:27,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:27,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598368589] [2024-06-21 17:06:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598368589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133008338] [2024-06-21 17:06:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:27,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:27,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:27,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 170 transitions, 1575 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) [2024-06-21 17:06:27,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:27,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:27,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:28,023 INFO L124 PetriNetUnfolderBase]: 486/876 cut-off events. [2024-06-21 17:06:28,023 INFO L125 PetriNetUnfolderBase]: For 69184/69184 co-relation queries the response was YES. [2024-06-21 17:06:28,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5960 conditions, 876 events. 486/876 cut-off events. For 69184/69184 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4176 event pairs, 81 based on Foata normal form. 2/876 useless extension candidates. Maximal degree in co-relation 5871. Up to 648 conditions per place. [2024-06-21 17:06:28,030 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 60 changer transitions 0/191 dead transitions. [2024-06-21 17:06:28,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 191 transitions, 2135 flow [2024-06-21 17:06:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 17:06:28,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 17:06:28,031 INFO L175 Difference]: Start difference. First operand has 184 places, 170 transitions, 1575 flow. Second operand 10 states and 126 transitions. [2024-06-21 17:06:28,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 191 transitions, 2135 flow [2024-06-21 17:06:28,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 2089 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:28,173 INFO L231 Difference]: Finished difference. Result has 188 places, 171 transitions, 1662 flow [2024-06-21 17:06:28,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1662, PETRI_PLACES=188, PETRI_TRANSITIONS=171} [2024-06-21 17:06:28,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-21 17:06:28,174 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 171 transitions, 1662 flow [2024-06-21 17:06:28,174 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) [2024-06-21 17:06:28,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:28,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:28,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 17:06:28,174 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)] === [2024-06-21 17:06:28,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:28,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1720249156, now seen corresponding path program 4 times [2024-06-21 17:06:28,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:28,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018674065] [2024-06-21 17:06:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:28,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018674065] [2024-06-21 17:06:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018674065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:28,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:28,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:28,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178552970] [2024-06-21 17:06:28,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:28,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:28,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:28,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:28,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 171 transitions, 1662 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) [2024-06-21 17:06:28,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:28,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:28,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:29,425 INFO L124 PetriNetUnfolderBase]: 511/931 cut-off events. [2024-06-21 17:06:29,425 INFO L125 PetriNetUnfolderBase]: For 97537/97537 co-relation queries the response was YES. [2024-06-21 17:06:29,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6191 conditions, 931 events. 511/931 cut-off events. For 97537/97537 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4538 event pairs, 77 based on Foata normal form. 18/947 useless extension candidates. Maximal degree in co-relation 6101. Up to 537 conditions per place. [2024-06-21 17:06:29,431 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 99 selfloop transitions, 94 changer transitions 8/203 dead transitions. [2024-06-21 17:06:29,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 203 transitions, 2304 flow [2024-06-21 17:06:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 17:06:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 17:06:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-21 17:06:29,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119106699751861 [2024-06-21 17:06:29,433 INFO L175 Difference]: Start difference. First operand has 188 places, 171 transitions, 1662 flow. Second operand 13 states and 166 transitions. [2024-06-21 17:06:29,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 203 transitions, 2304 flow [2024-06-21 17:06:29,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 203 transitions, 2178 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:29,588 INFO L231 Difference]: Finished difference. Result has 193 places, 170 transitions, 1733 flow [2024-06-21 17:06:29,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1733, PETRI_PLACES=193, PETRI_TRANSITIONS=170} [2024-06-21 17:06:29,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-21 17:06:29,589 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 170 transitions, 1733 flow [2024-06-21 17:06:29,589 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) [2024-06-21 17:06:29,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:29,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:29,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 17:06:29,589 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)] === [2024-06-21 17:06:29,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash 583108930, now seen corresponding path program 2 times [2024-06-21 17:06:29,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:29,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388257002] [2024-06-21 17:06:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:30,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:30,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388257002] [2024-06-21 17:06:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388257002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:30,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530216672] [2024-06-21 17:06:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:30,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:30,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:30,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:30,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 170 transitions, 1733 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) [2024-06-21 17:06:30,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:30,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:30,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:30,684 INFO L124 PetriNetUnfolderBase]: 502/916 cut-off events. [2024-06-21 17:06:30,685 INFO L125 PetriNetUnfolderBase]: For 70287/70287 co-relation queries the response was YES. [2024-06-21 17:06:30,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6287 conditions, 916 events. 502/916 cut-off events. For 70287/70287 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4449 event pairs, 73 based on Foata normal form. 2/916 useless extension candidates. Maximal degree in co-relation 6196. Up to 696 conditions per place. [2024-06-21 17:06:30,691 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 53 changer transitions 0/191 dead transitions. [2024-06-21 17:06:30,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 191 transitions, 2200 flow [2024-06-21 17:06:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 17:06:30,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 17:06:30,692 INFO L175 Difference]: Start difference. First operand has 193 places, 170 transitions, 1733 flow. Second operand 10 states and 125 transitions. [2024-06-21 17:06:30,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 191 transitions, 2200 flow [2024-06-21 17:06:30,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 191 transitions, 1999 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 17:06:30,837 INFO L231 Difference]: Finished difference. Result has 193 places, 174 transitions, 1700 flow [2024-06-21 17:06:30,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1700, PETRI_PLACES=193, PETRI_TRANSITIONS=174} [2024-06-21 17:06:30,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-21 17:06:30,838 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 174 transitions, 1700 flow [2024-06-21 17:06:30,838 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) [2024-06-21 17:06:30,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:30,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:30,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 17:06:30,839 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)] === [2024-06-21 17:06:30,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 582931114, now seen corresponding path program 5 times [2024-06-21 17:06:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449257320] [2024-06-21 17:06:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:30,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:31,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449257320] [2024-06-21 17:06:31,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449257320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:31,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:31,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776413804] [2024-06-21 17:06:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:31,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:31,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:31,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:31,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 174 transitions, 1700 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) [2024-06-21 17:06:31,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:31,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:31,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:31,937 INFO L124 PetriNetUnfolderBase]: 513/937 cut-off events. [2024-06-21 17:06:31,937 INFO L125 PetriNetUnfolderBase]: For 72688/72688 co-relation queries the response was YES. [2024-06-21 17:06:31,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 937 events. 513/937 cut-off events. For 72688/72688 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4626 event pairs, 82 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 6217. Up to 681 conditions per place. [2024-06-21 17:06:31,945 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 53 changer transitions 2/198 dead transitions. [2024-06-21 17:06:31,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 198 transitions, 2194 flow [2024-06-21 17:06:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 17:06:31,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 17:06:31,946 INFO L175 Difference]: Start difference. First operand has 193 places, 174 transitions, 1700 flow. Second operand 10 states and 128 transitions. [2024-06-21 17:06:31,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 198 transitions, 2194 flow [2024-06-21 17:06:32,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 2080 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:32,106 INFO L231 Difference]: Finished difference. Result has 198 places, 178 transitions, 1761 flow [2024-06-21 17:06:32,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1761, PETRI_PLACES=198, PETRI_TRANSITIONS=178} [2024-06-21 17:06:32,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-21 17:06:32,106 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 178 transitions, 1761 flow [2024-06-21 17:06:32,107 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) [2024-06-21 17:06:32,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:32,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:32,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 17:06:32,107 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)] === [2024-06-21 17:06:32,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash 582935950, now seen corresponding path program 3 times [2024-06-21 17:06:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:32,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316522415] [2024-06-21 17:06:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:32,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:32,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316522415] [2024-06-21 17:06:32,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316522415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:32,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:32,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:32,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103247582] [2024-06-21 17:06:32,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:32,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:32,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:32,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:32,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 178 transitions, 1761 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) [2024-06-21 17:06:32,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:32,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:32,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:33,161 INFO L124 PetriNetUnfolderBase]: 519/947 cut-off events. [2024-06-21 17:06:33,161 INFO L125 PetriNetUnfolderBase]: For 74926/74926 co-relation queries the response was YES. [2024-06-21 17:06:33,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6423 conditions, 947 events. 519/947 cut-off events. For 74926/74926 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4668 event pairs, 75 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 6327. Up to 715 conditions per place. [2024-06-21 17:06:33,167 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 57 changer transitions 0/198 dead transitions. [2024-06-21 17:06:33,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 198 transitions, 2224 flow [2024-06-21 17:06:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 17:06:33,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 17:06:33,168 INFO L175 Difference]: Start difference. First operand has 198 places, 178 transitions, 1761 flow. Second operand 10 states and 128 transitions. [2024-06-21 17:06:33,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 198 transitions, 2224 flow [2024-06-21 17:06:33,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 198 transitions, 2120 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:33,345 INFO L231 Difference]: Finished difference. Result has 202 places, 180 transitions, 1806 flow [2024-06-21 17:06:33,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1806, PETRI_PLACES=202, PETRI_TRANSITIONS=180} [2024-06-21 17:06:33,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-21 17:06:33,345 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 180 transitions, 1806 flow [2024-06-21 17:06:33,345 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) [2024-06-21 17:06:33,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:33,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:33,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 17:06:33,346 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)] === [2024-06-21 17:06:33,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash 578347144, now seen corresponding path program 6 times [2024-06-21 17:06:33,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:33,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765471306] [2024-06-21 17:06:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:33,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765471306] [2024-06-21 17:06:33,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765471306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:33,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:33,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529064674] [2024-06-21 17:06:33,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:33,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:33,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:34,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:34,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 180 transitions, 1806 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) [2024-06-21 17:06:34,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:34,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:34,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:34,289 INFO L124 PetriNetUnfolderBase]: 530/968 cut-off events. [2024-06-21 17:06:34,289 INFO L125 PetriNetUnfolderBase]: For 81493/81493 co-relation queries the response was YES. [2024-06-21 17:06:34,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 968 events. 530/968 cut-off events. For 81493/81493 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4825 event pairs, 95 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 6600. Up to 776 conditions per place. [2024-06-21 17:06:34,296 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 48 changer transitions 0/200 dead transitions. [2024-06-21 17:06:34,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 200 transitions, 2408 flow [2024-06-21 17:06:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 17:06:34,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-21 17:06:34,297 INFO L175 Difference]: Start difference. First operand has 202 places, 180 transitions, 1806 flow. Second operand 10 states and 123 transitions. [2024-06-21 17:06:34,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 200 transitions, 2408 flow [2024-06-21 17:06:34,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 200 transitions, 2268 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:34,514 INFO L231 Difference]: Finished difference. Result has 203 places, 183 transitions, 1799 flow [2024-06-21 17:06:34,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1799, PETRI_PLACES=203, PETRI_TRANSITIONS=183} [2024-06-21 17:06:34,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-21 17:06:34,515 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 183 transitions, 1799 flow [2024-06-21 17:06:34,515 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) [2024-06-21 17:06:34,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:34,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 17:06:34,515 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)] === [2024-06-21 17:06:34,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash 112723320, now seen corresponding path program 7 times [2024-06-21 17:06:34,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:34,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002117163] [2024-06-21 17:06:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:34,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:35,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:35,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002117163] [2024-06-21 17:06:35,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002117163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:35,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511238572] [2024-06-21 17:06:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:35,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:35,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:35,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:35,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 183 transitions, 1799 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) [2024-06-21 17:06:35,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:35,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:35,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:35,687 INFO L124 PetriNetUnfolderBase]: 527/963 cut-off events. [2024-06-21 17:06:35,687 INFO L125 PetriNetUnfolderBase]: For 79772/79772 co-relation queries the response was YES. [2024-06-21 17:06:35,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6537 conditions, 963 events. 527/963 cut-off events. For 79772/79772 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4823 event pairs, 84 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 6440. Up to 678 conditions per place. [2024-06-21 17:06:35,694 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 61 changer transitions 2/203 dead transitions. [2024-06-21 17:06:35,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 203 transitions, 2257 flow [2024-06-21 17:06:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 17:06:35,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-21 17:06:35,695 INFO L175 Difference]: Start difference. First operand has 203 places, 183 transitions, 1799 flow. Second operand 11 states and 137 transitions. [2024-06-21 17:06:35,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 203 transitions, 2257 flow [2024-06-21 17:06:35,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 203 transitions, 2228 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-21 17:06:35,894 INFO L231 Difference]: Finished difference. Result has 211 places, 183 transitions, 1898 flow [2024-06-21 17:06:35,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1898, PETRI_PLACES=211, PETRI_TRANSITIONS=183} [2024-06-21 17:06:35,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-21 17:06:35,894 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 183 transitions, 1898 flow [2024-06-21 17:06:35,894 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) [2024-06-21 17:06:35,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:35,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:35,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 17:06:35,894 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)] === [2024-06-21 17:06:35,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 112728156, now seen corresponding path program 4 times [2024-06-21 17:06:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127408808] [2024-06-21 17:06:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:36,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:36,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127408808] [2024-06-21 17:06:36,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127408808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:36,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:36,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:36,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418134638] [2024-06-21 17:06:36,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:36,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:36,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:36,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:36,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 183 transitions, 1898 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) [2024-06-21 17:06:36,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:36,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:36,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:36,918 INFO L124 PetriNetUnfolderBase]: 533/973 cut-off events. [2024-06-21 17:06:36,918 INFO L125 PetriNetUnfolderBase]: For 82288/82288 co-relation queries the response was YES. [2024-06-21 17:06:36,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 973 events. 533/973 cut-off events. For 82288/82288 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4837 event pairs, 79 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 6656. Up to 726 conditions per place. [2024-06-21 17:06:36,925 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 62 changer transitions 0/202 dead transitions. [2024-06-21 17:06:36,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 202 transitions, 2368 flow [2024-06-21 17:06:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 17:06:36,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 17:06:36,926 INFO L175 Difference]: Start difference. First operand has 211 places, 183 transitions, 1898 flow. Second operand 10 states and 129 transitions. [2024-06-21 17:06:36,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 202 transitions, 2368 flow [2024-06-21 17:06:37,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 202 transitions, 2258 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:37,100 INFO L231 Difference]: Finished difference. Result has 213 places, 185 transitions, 1951 flow [2024-06-21 17:06:37,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1951, PETRI_PLACES=213, PETRI_TRANSITIONS=185} [2024-06-21 17:06:37,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-21 17:06:37,103 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 185 transitions, 1951 flow [2024-06-21 17:06:37,103 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) [2024-06-21 17:06:37,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:37,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:37,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 17:06:37,103 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)] === [2024-06-21 17:06:37,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -295988182, now seen corresponding path program 8 times [2024-06-21 17:06:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:37,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617920857] [2024-06-21 17:06:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:37,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617920857] [2024-06-21 17:06:37,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617920857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491951172] [2024-06-21 17:06:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:37,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:37,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:37,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:37,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 185 transitions, 1951 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) [2024-06-21 17:06:37,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:37,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:37,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:38,096 INFO L124 PetriNetUnfolderBase]: 537/981 cut-off events. [2024-06-21 17:06:38,096 INFO L125 PetriNetUnfolderBase]: For 84832/84832 co-relation queries the response was YES. [2024-06-21 17:06:38,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6859 conditions, 981 events. 537/981 cut-off events. For 84832/84832 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4912 event pairs, 78 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6759. Up to 722 conditions per place. [2024-06-21 17:06:38,104 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 144 selfloop transitions, 65 changer transitions 0/211 dead transitions. [2024-06-21 17:06:38,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 211 transitions, 2601 flow [2024-06-21 17:06:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 17:06:38,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 17:06:38,106 INFO L175 Difference]: Start difference. First operand has 213 places, 185 transitions, 1951 flow. Second operand 10 states and 130 transitions. [2024-06-21 17:06:38,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 211 transitions, 2601 flow [2024-06-21 17:06:38,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 211 transitions, 2427 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-21 17:06:38,310 INFO L231 Difference]: Finished difference. Result has 214 places, 189 transitions, 1974 flow [2024-06-21 17:06:38,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1974, PETRI_PLACES=214, PETRI_TRANSITIONS=189} [2024-06-21 17:06:38,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-21 17:06:38,311 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 189 transitions, 1974 flow [2024-06-21 17:06:38,311 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) [2024-06-21 17:06:38,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:38,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:38,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 17:06:38,311 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)] === [2024-06-21 17:06:38,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash -295872862, now seen corresponding path program 9 times [2024-06-21 17:06:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:38,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84891251] [2024-06-21 17:06:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:38,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:38,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84891251] [2024-06-21 17:06:38,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84891251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:38,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:38,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:38,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651943095] [2024-06-21 17:06:38,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:38,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:38,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:38,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:39,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:39,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 189 transitions, 1974 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) [2024-06-21 17:06:39,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:39,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:39,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:39,343 INFO L124 PetriNetUnfolderBase]: 551/1007 cut-off events. [2024-06-21 17:06:39,343 INFO L125 PetriNetUnfolderBase]: For 92147/92147 co-relation queries the response was YES. [2024-06-21 17:06:39,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7175 conditions, 1007 events. 551/1007 cut-off events. For 92147/92147 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5104 event pairs, 99 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 7074. Up to 825 conditions per place. [2024-06-21 17:06:39,349 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 66 changer transitions 0/214 dead transitions. [2024-06-21 17:06:39,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 214 transitions, 2649 flow [2024-06-21 17:06:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 17:06:39,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 17:06:39,350 INFO L175 Difference]: Start difference. First operand has 214 places, 189 transitions, 1974 flow. Second operand 10 states and 130 transitions. [2024-06-21 17:06:39,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 214 transitions, 2649 flow [2024-06-21 17:06:39,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 214 transitions, 2414 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:39,567 INFO L231 Difference]: Finished difference. Result has 216 places, 193 transitions, 1934 flow [2024-06-21 17:06:39,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=216, PETRI_TRANSITIONS=193} [2024-06-21 17:06:39,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-21 17:06:39,568 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 193 transitions, 1934 flow [2024-06-21 17:06:39,568 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) [2024-06-21 17:06:39,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:39,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:39,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 17:06:39,568 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)] === [2024-06-21 17:06:39,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash -761607170, now seen corresponding path program 5 times [2024-06-21 17:06:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823498683] [2024-06-21 17:06:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823498683] [2024-06-21 17:06:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823498683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:40,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:40,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:40,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705762928] [2024-06-21 17:06:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:40,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:40,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:40,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 193 transitions, 1934 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:40,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:40,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:40,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:40,759 INFO L124 PetriNetUnfolderBase]: 643/1153 cut-off events. [2024-06-21 17:06:40,759 INFO L125 PetriNetUnfolderBase]: For 66428/66428 co-relation queries the response was YES. [2024-06-21 17:06:40,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 1153 events. 643/1153 cut-off events. For 66428/66428 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5969 event pairs, 115 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 7015. Up to 817 conditions per place. [2024-06-21 17:06:40,767 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 178 selfloop transitions, 91 changer transitions 0/271 dead transitions. [2024-06-21 17:06:40,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 271 transitions, 3351 flow [2024-06-21 17:06:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 17:06:40,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-21 17:06:40,768 INFO L175 Difference]: Start difference. First operand has 216 places, 193 transitions, 1934 flow. Second operand 10 states and 132 transitions. [2024-06-21 17:06:40,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 271 transitions, 3351 flow [2024-06-21 17:06:40,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 271 transitions, 3211 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:40,920 INFO L231 Difference]: Finished difference. Result has 226 places, 238 transitions, 2764 flow [2024-06-21 17:06:40,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2764, PETRI_PLACES=226, PETRI_TRANSITIONS=238} [2024-06-21 17:06:40,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-21 17:06:40,920 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 238 transitions, 2764 flow [2024-06-21 17:06:40,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:40,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:40,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:40,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 17:06:40,921 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)] === [2024-06-21 17:06:40,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash -761607356, now seen corresponding path program 10 times [2024-06-21 17:06:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:40,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377061367] [2024-06-21 17:06:40,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377061367] [2024-06-21 17:06:41,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377061367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:41,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:41,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763722472] [2024-06-21 17:06:41,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:41,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:41,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:41,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 238 transitions, 2764 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) [2024-06-21 17:06:41,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:41,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:41,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:41,953 INFO L124 PetriNetUnfolderBase]: 640/1146 cut-off events. [2024-06-21 17:06:41,954 INFO L125 PetriNetUnfolderBase]: For 63841/63843 co-relation queries the response was YES. [2024-06-21 17:06:41,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 1146 events. 640/1146 cut-off events. For 63841/63843 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5919 event pairs, 92 based on Foata normal form. 4/1148 useless extension candidates. Maximal degree in co-relation 7344. Up to 901 conditions per place. [2024-06-21 17:06:41,964 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 92 changer transitions 0/257 dead transitions. [2024-06-21 17:06:41,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 257 transitions, 3326 flow [2024-06-21 17:06:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 17:06:41,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 17:06:41,965 INFO L175 Difference]: Start difference. First operand has 226 places, 238 transitions, 2764 flow. Second operand 10 states and 127 transitions. [2024-06-21 17:06:41,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 257 transitions, 3326 flow [2024-06-21 17:06:42,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 257 transitions, 3280 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-21 17:06:42,174 INFO L231 Difference]: Finished difference. Result has 234 places, 238 transitions, 2907 flow [2024-06-21 17:06:42,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2907, PETRI_PLACES=234, PETRI_TRANSITIONS=238} [2024-06-21 17:06:42,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-21 17:06:42,174 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 238 transitions, 2907 flow [2024-06-21 17:06:42,174 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) [2024-06-21 17:06:42,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:42,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:42,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 17:06:42,175 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)] === [2024-06-21 17:06:42,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:42,175 INFO L85 PathProgramCache]: Analyzing trace with hash -124992802, now seen corresponding path program 11 times [2024-06-21 17:06:42,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:42,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36650030] [2024-06-21 17:06:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:42,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:42,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36650030] [2024-06-21 17:06:42,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36650030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:42,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:42,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:42,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33061443] [2024-06-21 17:06:42,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:42,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:42,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:42,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:42,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:42,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 238 transitions, 2907 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) [2024-06-21 17:06:42,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:42,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:42,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:43,237 INFO L124 PetriNetUnfolderBase]: 664/1199 cut-off events. [2024-06-21 17:06:43,237 INFO L125 PetriNetUnfolderBase]: For 97027/97027 co-relation queries the response was YES. [2024-06-21 17:06:43,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7816 conditions, 1199 events. 664/1199 cut-off events. For 97027/97027 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6296 event pairs, 80 based on Foata normal form. 14/1211 useless extension candidates. Maximal degree in co-relation 7707. Up to 841 conditions per place. [2024-06-21 17:06:43,247 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 66 changer transitions 16/263 dead transitions. [2024-06-21 17:06:43,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 263 transitions, 3523 flow [2024-06-21 17:06:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 17:06:43,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-21 17:06:43,248 INFO L175 Difference]: Start difference. First operand has 234 places, 238 transitions, 2907 flow. Second operand 10 states and 133 transitions. [2024-06-21 17:06:43,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 263 transitions, 3523 flow [2024-06-21 17:06:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 263 transitions, 3332 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:43,493 INFO L231 Difference]: Finished difference. Result has 235 places, 231 transitions, 2783 flow [2024-06-21 17:06:43,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2783, PETRI_PLACES=235, PETRI_TRANSITIONS=231} [2024-06-21 17:06:43,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-21 17:06:43,493 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 231 transitions, 2783 flow [2024-06-21 17:06:43,494 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) [2024-06-21 17:06:43,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:43,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:43,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 17:06:43,494 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)] === [2024-06-21 17:06:43,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash -124992616, now seen corresponding path program 6 times [2024-06-21 17:06:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:43,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517046523] [2024-06-21 17:06:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:43,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:44,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:44,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517046523] [2024-06-21 17:06:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517046523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:44,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:44,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035667505] [2024-06-21 17:06:44,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:44,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:44,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:44,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:44,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:44,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:44,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 231 transitions, 2783 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) [2024-06-21 17:06:44,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:44,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:44,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:44,708 INFO L124 PetriNetUnfolderBase]: 632/1143 cut-off events. [2024-06-21 17:06:44,708 INFO L125 PetriNetUnfolderBase]: For 73708/73708 co-relation queries the response was YES. [2024-06-21 17:06:44,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 1143 events. 632/1143 cut-off events. For 73708/73708 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5996 event pairs, 72 based on Foata normal form. 4/1145 useless extension candidates. Maximal degree in co-relation 7501. Up to 857 conditions per place. [2024-06-21 17:06:44,718 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 180 selfloop transitions, 69 changer transitions 3/254 dead transitions. [2024-06-21 17:06:44,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 254 transitions, 3414 flow [2024-06-21 17:06:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 17:06:44,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 17:06:44,718 INFO L175 Difference]: Start difference. First operand has 235 places, 231 transitions, 2783 flow. Second operand 11 states and 133 transitions. [2024-06-21 17:06:44,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 254 transitions, 3414 flow [2024-06-21 17:06:44,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 254 transitions, 3275 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:44,957 INFO L231 Difference]: Finished difference. Result has 239 places, 235 transitions, 2880 flow [2024-06-21 17:06:44,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2880, PETRI_PLACES=239, PETRI_TRANSITIONS=235} [2024-06-21 17:06:44,957 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-21 17:06:44,958 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 2880 flow [2024-06-21 17:06:44,958 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) [2024-06-21 17:06:44,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:44,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:44,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 17:06:44,958 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)] === [2024-06-21 17:06:44,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:44,958 INFO L85 PathProgramCache]: Analyzing trace with hash -590909576, now seen corresponding path program 12 times [2024-06-21 17:06:44,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:44,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701141009] [2024-06-21 17:06:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:44,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701141009] [2024-06-21 17:06:45,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701141009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:45,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:45,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:45,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492052714] [2024-06-21 17:06:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:45,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:45,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:45,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:45,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:45,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 235 transitions, 2880 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) [2024-06-21 17:06:45,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:45,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:45,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:46,086 INFO L124 PetriNetUnfolderBase]: 675/1224 cut-off events. [2024-06-21 17:06:46,086 INFO L125 PetriNetUnfolderBase]: For 108277/108277 co-relation queries the response was YES. [2024-06-21 17:06:46,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8975 conditions, 1224 events. 675/1224 cut-off events. For 108277/108277 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6448 event pairs, 89 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 8863. Up to 801 conditions per place. [2024-06-21 17:06:46,097 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 80 changer transitions 0/261 dead transitions. [2024-06-21 17:06:46,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 261 transitions, 3650 flow [2024-06-21 17:06:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 17:06:46,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-21 17:06:46,106 INFO L175 Difference]: Start difference. First operand has 239 places, 235 transitions, 2880 flow. Second operand 10 states and 134 transitions. [2024-06-21 17:06:46,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 261 transitions, 3650 flow [2024-06-21 17:06:46,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 261 transitions, 3465 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:46,493 INFO L231 Difference]: Finished difference. Result has 240 places, 237 transitions, 2891 flow [2024-06-21 17:06:46,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2891, PETRI_PLACES=240, PETRI_TRANSITIONS=237} [2024-06-21 17:06:46,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-21 17:06:46,494 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 237 transitions, 2891 flow [2024-06-21 17:06:46,494 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) [2024-06-21 17:06:46,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:46,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:46,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 17:06:46,494 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)] === [2024-06-21 17:06:46,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:46,494 INFO L85 PathProgramCache]: Analyzing trace with hash -371024178, now seen corresponding path program 7 times [2024-06-21 17:06:46,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:46,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247605235] [2024-06-21 17:06:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:46,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247605235] [2024-06-21 17:06:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247605235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:47,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:47,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:47,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077574460] [2024-06-21 17:06:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:47,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:47,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:47,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 237 transitions, 2891 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) [2024-06-21 17:06:47,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:47,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:47,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:47,723 INFO L124 PetriNetUnfolderBase]: 707/1276 cut-off events. [2024-06-21 17:06:47,723 INFO L125 PetriNetUnfolderBase]: For 128925/128925 co-relation queries the response was YES. [2024-06-21 17:06:47,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9683 conditions, 1276 events. 707/1276 cut-off events. For 128925/128925 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6758 event pairs, 97 based on Foata normal form. 4/1278 useless extension candidates. Maximal degree in co-relation 9570. Up to 938 conditions per place. [2024-06-21 17:06:47,735 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 89 changer transitions 0/264 dead transitions. [2024-06-21 17:06:47,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 264 transitions, 3781 flow [2024-06-21 17:06:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 17:06:47,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-21 17:06:47,736 INFO L175 Difference]: Start difference. First operand has 240 places, 237 transitions, 2891 flow. Second operand 11 states and 137 transitions. [2024-06-21 17:06:47,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 264 transitions, 3781 flow [2024-06-21 17:06:48,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 264 transitions, 3665 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:48,110 INFO L231 Difference]: Finished difference. Result has 245 places, 245 transitions, 3145 flow [2024-06-21 17:06:48,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3145, PETRI_PLACES=245, PETRI_TRANSITIONS=245} [2024-06-21 17:06:48,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-21 17:06:48,110 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 245 transitions, 3145 flow [2024-06-21 17:06:48,111 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) [2024-06-21 17:06:48,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:48,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 17:06:48,111 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)] === [2024-06-21 17:06:48,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1989842650, now seen corresponding path program 13 times [2024-06-21 17:06:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753044767] [2024-06-21 17:06:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:48,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753044767] [2024-06-21 17:06:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753044767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:48,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036545878] [2024-06-21 17:06:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:48,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:48,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:48,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:48,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 245 transitions, 3145 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) [2024-06-21 17:06:48,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:48,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:48,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:49,247 INFO L124 PetriNetUnfolderBase]: 711/1284 cut-off events. [2024-06-21 17:06:49,248 INFO L125 PetriNetUnfolderBase]: For 126722/126722 co-relation queries the response was YES. [2024-06-21 17:06:49,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9953 conditions, 1284 events. 711/1284 cut-off events. For 126722/126722 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6830 event pairs, 97 based on Foata normal form. 2/1284 useless extension candidates. Maximal degree in co-relation 9838. Up to 972 conditions per place. [2024-06-21 17:06:49,259 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 182 selfloop transitions, 80 changer transitions 0/264 dead transitions. [2024-06-21 17:06:49,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 264 transitions, 3726 flow [2024-06-21 17:06:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 17:06:49,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 17:06:49,260 INFO L175 Difference]: Start difference. First operand has 245 places, 245 transitions, 3145 flow. Second operand 11 states and 135 transitions. [2024-06-21 17:06:49,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 264 transitions, 3726 flow [2024-06-21 17:06:49,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 264 transitions, 3584 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:49,559 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 3188 flow [2024-06-21 17:06:49,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3188, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2024-06-21 17:06:49,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-21 17:06:49,559 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 3188 flow [2024-06-21 17:06:49,560 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) [2024-06-21 17:06:49,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:49,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:49,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 17:06:49,560 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)] === [2024-06-21 17:06:49,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:49,560 INFO L85 PathProgramCache]: Analyzing trace with hash -118736692, now seen corresponding path program 14 times [2024-06-21 17:06:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:49,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922571858] [2024-06-21 17:06:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:50,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922571858] [2024-06-21 17:06:50,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922571858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:50,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:50,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:50,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738933462] [2024-06-21 17:06:50,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:50,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:50,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:50,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:50,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 3188 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) [2024-06-21 17:06:50,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:50,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:50,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:50,640 INFO L124 PetriNetUnfolderBase]: 692/1251 cut-off events. [2024-06-21 17:06:50,640 INFO L125 PetriNetUnfolderBase]: For 123640/123640 co-relation queries the response was YES. [2024-06-21 17:06:50,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8909 conditions, 1251 events. 692/1251 cut-off events. For 123640/123640 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6663 event pairs, 78 based on Foata normal form. 14/1263 useless extension candidates. Maximal degree in co-relation 8792. Up to 905 conditions per place. [2024-06-21 17:06:50,649 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 188 selfloop transitions, 59 changer transitions 19/268 dead transitions. [2024-06-21 17:06:50,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 268 transitions, 3790 flow [2024-06-21 17:06:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 17:06:50,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 17:06:50,650 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 3188 flow. Second operand 10 states and 130 transitions. [2024-06-21 17:06:50,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 268 transitions, 3790 flow [2024-06-21 17:06:50,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 268 transitions, 3620 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:50,898 INFO L231 Difference]: Finished difference. Result has 250 places, 234 transitions, 2992 flow [2024-06-21 17:06:50,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3018, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2992, PETRI_PLACES=250, PETRI_TRANSITIONS=234} [2024-06-21 17:06:50,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-21 17:06:50,899 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 234 transitions, 2992 flow [2024-06-21 17:06:50,899 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) [2024-06-21 17:06:50,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:50,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:50,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 17:06:50,899 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)] === [2024-06-21 17:06:50,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash -756965726, now seen corresponding path program 15 times [2024-06-21 17:06:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:50,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120981732] [2024-06-21 17:06:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:51,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:51,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120981732] [2024-06-21 17:06:51,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120981732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:51,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:51,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174691835] [2024-06-21 17:06:51,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:51,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:51,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 234 transitions, 2992 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) [2024-06-21 17:06:51,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:51,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:51,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:52,198 INFO L124 PetriNetUnfolderBase]: 642/1168 cut-off events. [2024-06-21 17:06:52,198 INFO L125 PetriNetUnfolderBase]: For 89590/89592 co-relation queries the response was YES. [2024-06-21 17:06:52,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 1168 events. 642/1168 cut-off events. For 89590/89592 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6214 event pairs, 88 based on Foata normal form. 4/1170 useless extension candidates. Maximal degree in co-relation 8363. Up to 1003 conditions per place. [2024-06-21 17:06:52,209 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 59 changer transitions 0/254 dead transitions. [2024-06-21 17:06:52,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 254 transitions, 3590 flow [2024-06-21 17:06:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-21 17:06:52,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-21 17:06:52,210 INFO L175 Difference]: Start difference. First operand has 250 places, 234 transitions, 2992 flow. Second operand 10 states and 121 transitions. [2024-06-21 17:06:52,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 254 transitions, 3590 flow [2024-06-21 17:06:52,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 254 transitions, 3402 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-21 17:06:52,463 INFO L231 Difference]: Finished difference. Result has 247 places, 238 transitions, 2992 flow [2024-06-21 17:06:52,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2992, PETRI_PLACES=247, PETRI_TRANSITIONS=238} [2024-06-21 17:06:52,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-21 17:06:52,464 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 238 transitions, 2992 flow [2024-06-21 17:06:52,464 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) [2024-06-21 17:06:52,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:52,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:52,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 17:06:52,464 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)] === [2024-06-21 17:06:52,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash -584475650, now seen corresponding path program 8 times [2024-06-21 17:06:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187063031] [2024-06-21 17:06:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:53,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187063031] [2024-06-21 17:06:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187063031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:53,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:53,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661466933] [2024-06-21 17:06:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:53,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:53,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:53,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 238 transitions, 2992 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) [2024-06-21 17:06:53,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:53,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:53,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:53,508 INFO L124 PetriNetUnfolderBase]: 634/1157 cut-off events. [2024-06-21 17:06:53,508 INFO L125 PetriNetUnfolderBase]: For 85779/85779 co-relation queries the response was YES. [2024-06-21 17:06:53,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8030 conditions, 1157 events. 634/1157 cut-off events. For 85779/85779 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6180 event pairs, 74 based on Foata normal form. 4/1159 useless extension candidates. Maximal degree in co-relation 7913. Up to 907 conditions per place. [2024-06-21 17:06:53,519 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 62 changer transitions 0/253 dead transitions. [2024-06-21 17:06:53,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 3530 flow [2024-06-21 17:06:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-21 17:06:53,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-21 17:06:53,520 INFO L175 Difference]: Start difference. First operand has 247 places, 238 transitions, 2992 flow. Second operand 10 states and 121 transitions. [2024-06-21 17:06:53,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 3530 flow [2024-06-21 17:06:53,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 253 transitions, 3354 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:53,735 INFO L231 Difference]: Finished difference. Result has 251 places, 238 transitions, 2947 flow [2024-06-21 17:06:53,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2947, PETRI_PLACES=251, PETRI_TRANSITIONS=238} [2024-06-21 17:06:53,735 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-21 17:06:53,735 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 238 transitions, 2947 flow [2024-06-21 17:06:53,736 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) [2024-06-21 17:06:53,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:53,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:53,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 17:06:53,736 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)] === [2024-06-21 17:06:53,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash -291226396, now seen corresponding path program 9 times [2024-06-21 17:06:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:53,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358644348] [2024-06-21 17:06:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:53,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:54,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:54,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358644348] [2024-06-21 17:06:54,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358644348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:54,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:54,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:54,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563164145] [2024-06-21 17:06:54,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:54,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:54,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:54,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 238 transitions, 2947 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) [2024-06-21 17:06:54,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:54,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:54,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:54,937 INFO L124 PetriNetUnfolderBase]: 646/1176 cut-off events. [2024-06-21 17:06:54,937 INFO L125 PetriNetUnfolderBase]: For 87706/87708 co-relation queries the response was YES. [2024-06-21 17:06:54,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8164 conditions, 1176 events. 646/1176 cut-off events. For 87706/87708 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6268 event pairs, 78 based on Foata normal form. 6/1180 useless extension candidates. Maximal degree in co-relation 8046. Up to 911 conditions per place. [2024-06-21 17:06:54,947 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 184 selfloop transitions, 77 changer transitions 0/263 dead transitions. [2024-06-21 17:06:54,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 263 transitions, 3615 flow [2024-06-21 17:06:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 17:06:54,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-21 17:06:54,948 INFO L175 Difference]: Start difference. First operand has 251 places, 238 transitions, 2947 flow. Second operand 11 states and 138 transitions. [2024-06-21 17:06:54,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 263 transitions, 3615 flow [2024-06-21 17:06:55,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 263 transitions, 3475 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:55,178 INFO L231 Difference]: Finished difference. Result has 253 places, 242 transitions, 3070 flow [2024-06-21 17:06:55,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3070, PETRI_PLACES=253, PETRI_TRANSITIONS=242} [2024-06-21 17:06:55,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-21 17:06:55,178 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 242 transitions, 3070 flow [2024-06-21 17:06:55,179 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) [2024-06-21 17:06:55,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:55,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 17:06:55,179 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)] === [2024-06-21 17:06:55,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -291404212, now seen corresponding path program 16 times [2024-06-21 17:06:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238463532] [2024-06-21 17:06:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:55,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238463532] [2024-06-21 17:06:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238463532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:55,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:55,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:55,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119675799] [2024-06-21 17:06:55,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:55,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:55,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:55,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:55,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:55,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 242 transitions, 3070 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) [2024-06-21 17:06:55,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:55,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:55,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:56,256 INFO L124 PetriNetUnfolderBase]: 657/1197 cut-off events. [2024-06-21 17:06:56,256 INFO L125 PetriNetUnfolderBase]: For 89962/89964 co-relation queries the response was YES. [2024-06-21 17:06:56,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 1197 events. 657/1197 cut-off events. For 89962/89964 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6429 event pairs, 85 based on Foata normal form. 4/1199 useless extension candidates. Maximal degree in co-relation 8396. Up to 993 conditions per place. [2024-06-21 17:06:56,266 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 66 changer transitions 0/262 dead transitions. [2024-06-21 17:06:56,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 262 transitions, 3836 flow [2024-06-21 17:06:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 17:06:56,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 17:06:56,268 INFO L175 Difference]: Start difference. First operand has 253 places, 242 transitions, 3070 flow. Second operand 10 states and 125 transitions. [2024-06-21 17:06:56,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 262 transitions, 3836 flow [2024-06-21 17:06:56,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 262 transitions, 3604 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:56,514 INFO L231 Difference]: Finished difference. Result has 254 places, 244 transitions, 3014 flow [2024-06-21 17:06:56,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3014, PETRI_PLACES=254, PETRI_TRANSITIONS=244} [2024-06-21 17:06:56,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-21 17:06:56,514 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 244 transitions, 3014 flow [2024-06-21 17:06:56,515 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) [2024-06-21 17:06:56,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:56,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:56,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 17:06:56,515 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)] === [2024-06-21 17:06:56,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash -757138706, now seen corresponding path program 17 times [2024-06-21 17:06:56,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:56,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471310315] [2024-06-21 17:06:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:57,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:57,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471310315] [2024-06-21 17:06:57,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471310315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:57,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:57,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:57,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776598701] [2024-06-21 17:06:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:57,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:57,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:57,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 244 transitions, 3014 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) [2024-06-21 17:06:57,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:57,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:57,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:57,752 INFO L124 PetriNetUnfolderBase]: 674/1236 cut-off events. [2024-06-21 17:06:57,752 INFO L125 PetriNetUnfolderBase]: For 125008/125010 co-relation queries the response was YES. [2024-06-21 17:06:57,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1236 events. 674/1236 cut-off events. For 125008/125010 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6694 event pairs, 84 based on Foata normal form. 16/1250 useless extension candidates. Maximal degree in co-relation 8202. Up to 895 conditions per place. [2024-06-21 17:06:57,765 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 72 changer transitions 16/270 dead transitions. [2024-06-21 17:06:57,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 270 transitions, 3632 flow [2024-06-21 17:06:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 17:06:57,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 17:06:57,766 INFO L175 Difference]: Start difference. First operand has 254 places, 244 transitions, 3014 flow. Second operand 11 states and 143 transitions. [2024-06-21 17:06:57,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 270 transitions, 3632 flow [2024-06-21 17:06:58,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 270 transitions, 3525 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:58,012 INFO L231 Difference]: Finished difference. Result has 260 places, 235 transitions, 2954 flow [2024-06-21 17:06:58,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2954, PETRI_PLACES=260, PETRI_TRANSITIONS=235} [2024-06-21 17:06:58,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-21 17:06:58,012 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 235 transitions, 2954 flow [2024-06-21 17:06:58,012 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) [2024-06-21 17:06:58,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:58,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:58,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 17:06:58,013 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)] === [2024-06-21 17:06:58,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash -291399376, now seen corresponding path program 10 times [2024-06-21 17:06:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581815160] [2024-06-21 17:06:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:58,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581815160] [2024-06-21 17:06:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581815160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:58,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:58,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681569830] [2024-06-21 17:06:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:58,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:58,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:06:58,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 235 transitions, 2954 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) [2024-06-21 17:06:58,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:58,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:06:58,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:59,150 INFO L124 PetriNetUnfolderBase]: 638/1168 cut-off events. [2024-06-21 17:06:59,150 INFO L125 PetriNetUnfolderBase]: For 94011/94013 co-relation queries the response was YES. [2024-06-21 17:06:59,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 1168 events. 638/1168 cut-off events. For 94011/94013 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6255 event pairs, 77 based on Foata normal form. 6/1172 useless extension candidates. Maximal degree in co-relation 8096. Up to 885 conditions per place. [2024-06-21 17:06:59,159 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 81 changer transitions 0/259 dead transitions. [2024-06-21 17:06:59,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 259 transitions, 3620 flow [2024-06-21 17:06:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 17:06:59,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-21 17:06:59,160 INFO L175 Difference]: Start difference. First operand has 260 places, 235 transitions, 2954 flow. Second operand 10 states and 131 transitions. [2024-06-21 17:06:59,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 259 transitions, 3620 flow [2024-06-21 17:06:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 3450 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-21 17:06:59,398 INFO L231 Difference]: Finished difference. Result has 257 places, 239 transitions, 3063 flow [2024-06-21 17:06:59,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3063, PETRI_PLACES=257, PETRI_TRANSITIONS=239} [2024-06-21 17:06:59,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-21 17:06:59,399 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 239 transitions, 3063 flow [2024-06-21 17:06:59,399 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) [2024-06-21 17:06:59,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:59,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:59,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 17:06:59,399 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)] === [2024-06-21 17:06:59,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:59,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1219851892, now seen corresponding path program 1 times [2024-06-21 17:06:59,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:59,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527521617] [2024-06-21 17:06:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:59,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:00,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:00,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527521617] [2024-06-21 17:07:00,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527521617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:00,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:00,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:00,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693576392] [2024-06-21 17:07:00,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:00,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:00,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:00,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:00,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:00,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:00,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 239 transitions, 3063 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) [2024-06-21 17:07:00,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:00,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:00,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:00,733 INFO L124 PetriNetUnfolderBase]: 642/1178 cut-off events. [2024-06-21 17:07:00,733 INFO L125 PetriNetUnfolderBase]: For 89715/89715 co-relation queries the response was YES. [2024-06-21 17:07:00,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8320 conditions, 1178 events. 642/1178 cut-off events. For 89715/89715 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6323 event pairs, 117 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 8198. Up to 1116 conditions per place. [2024-06-21 17:07:00,743 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 226 selfloop transitions, 24 changer transitions 0/252 dead transitions. [2024-06-21 17:07:00,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 252 transitions, 3605 flow [2024-06-21 17:07:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 17:07:00,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 17:07:00,744 INFO L175 Difference]: Start difference. First operand has 257 places, 239 transitions, 3063 flow. Second operand 10 states and 111 transitions. [2024-06-21 17:07:00,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 252 transitions, 3605 flow [2024-06-21 17:07:00,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 252 transitions, 3356 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:00,987 INFO L231 Difference]: Finished difference. Result has 258 places, 240 transitions, 2884 flow [2024-06-21 17:07:00,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2884, PETRI_PLACES=258, PETRI_TRANSITIONS=240} [2024-06-21 17:07:00,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-21 17:07:00,988 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 240 transitions, 2884 flow [2024-06-21 17:07:00,988 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) [2024-06-21 17:07:00,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:00,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:00,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 17:07:00,988 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)] === [2024-06-21 17:07:00,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1471843012, now seen corresponding path program 2 times [2024-06-21 17:07:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:00,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378442364] [2024-06-21 17:07:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:01,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378442364] [2024-06-21 17:07:01,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378442364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:01,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863684150] [2024-06-21 17:07:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:01,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:01,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 240 transitions, 2884 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) [2024-06-21 17:07:01,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:01,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:01,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:02,242 INFO L124 PetriNetUnfolderBase]: 646/1186 cut-off events. [2024-06-21 17:07:02,242 INFO L125 PetriNetUnfolderBase]: For 90616/90616 co-relation queries the response was YES. [2024-06-21 17:07:02,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8118 conditions, 1186 events. 646/1186 cut-off events. For 90616/90616 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6368 event pairs, 117 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 7996. Up to 1151 conditions per place. [2024-06-21 17:07:02,253 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 16 changer transitions 0/252 dead transitions. [2024-06-21 17:07:02,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 252 transitions, 3426 flow [2024-06-21 17:07:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 17:07:02,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-21 17:07:02,254 INFO L175 Difference]: Start difference. First operand has 258 places, 240 transitions, 2884 flow. Second operand 10 states and 106 transitions. [2024-06-21 17:07:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 252 transitions, 3426 flow [2024-06-21 17:07:02,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 252 transitions, 3368 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:02,509 INFO L231 Difference]: Finished difference. Result has 261 places, 241 transitions, 2882 flow [2024-06-21 17:07:02,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2882, PETRI_PLACES=261, PETRI_TRANSITIONS=241} [2024-06-21 17:07:02,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-21 17:07:02,509 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 241 transitions, 2882 flow [2024-06-21 17:07:02,509 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) [2024-06-21 17:07:02,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:02,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 17:07:02,509 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)] === [2024-06-21 17:07:02,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2103586626, now seen corresponding path program 11 times [2024-06-21 17:07:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069793638] [2024-06-21 17:07:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069793638] [2024-06-21 17:07:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069793638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:03,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821318364] [2024-06-21 17:07:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:03,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:03,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 241 transitions, 2882 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) [2024-06-21 17:07:03,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:03,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:03,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:03,736 INFO L124 PetriNetUnfolderBase]: 662/1212 cut-off events. [2024-06-21 17:07:03,736 INFO L125 PetriNetUnfolderBase]: For 100627/100627 co-relation queries the response was YES. [2024-06-21 17:07:03,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 1212 events. 662/1212 cut-off events. For 100627/100627 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6557 event pairs, 114 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 8410. Up to 1075 conditions per place. [2024-06-21 17:07:03,747 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 218 selfloop transitions, 44 changer transitions 0/264 dead transitions. [2024-06-21 17:07:03,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 264 transitions, 3738 flow [2024-06-21 17:07:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 17:07:03,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 17:07:03,748 INFO L175 Difference]: Start difference. First operand has 261 places, 241 transitions, 2882 flow. Second operand 12 states and 139 transitions. [2024-06-21 17:07:03,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 264 transitions, 3738 flow [2024-06-21 17:07:04,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 264 transitions, 3686 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:04,034 INFO L231 Difference]: Finished difference. Result has 265 places, 246 transitions, 3054 flow [2024-06-21 17:07:04,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3054, PETRI_PLACES=265, PETRI_TRANSITIONS=246} [2024-06-21 17:07:04,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-21 17:07:04,035 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 246 transitions, 3054 flow [2024-06-21 17:07:04,035 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) [2024-06-21 17:07:04,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:04,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:04,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 17:07:04,035 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)] === [2024-06-21 17:07:04,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash -886826670, now seen corresponding path program 12 times [2024-06-21 17:07:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679839383] [2024-06-21 17:07:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:04,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:04,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:04,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679839383] [2024-06-21 17:07:04,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679839383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:04,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:04,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:04,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363100485] [2024-06-21 17:07:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:04,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:04,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:04,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:04,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 246 transitions, 3054 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) [2024-06-21 17:07:04,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:04,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:04,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:05,224 INFO L124 PetriNetUnfolderBase]: 674/1232 cut-off events. [2024-06-21 17:07:05,224 INFO L125 PetriNetUnfolderBase]: For 103336/103336 co-relation queries the response was YES. [2024-06-21 17:07:05,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8789 conditions, 1232 events. 674/1232 cut-off events. For 103336/103336 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6649 event pairs, 119 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 8665. Up to 1178 conditions per place. [2024-06-21 17:07:05,236 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 21 changer transitions 0/263 dead transitions. [2024-06-21 17:07:05,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 263 transitions, 3683 flow [2024-06-21 17:07:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 17:07:05,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 17:07:05,237 INFO L175 Difference]: Start difference. First operand has 265 places, 246 transitions, 3054 flow. Second operand 10 states and 112 transitions. [2024-06-21 17:07:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 263 transitions, 3683 flow [2024-06-21 17:07:05,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 263 transitions, 3587 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:05,565 INFO L231 Difference]: Finished difference. Result has 268 places, 250 transitions, 3088 flow [2024-06-21 17:07:05,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3088, PETRI_PLACES=268, PETRI_TRANSITIONS=250} [2024-06-21 17:07:05,565 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-21 17:07:05,565 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 250 transitions, 3088 flow [2024-06-21 17:07:05,566 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) [2024-06-21 17:07:05,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:05,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:05,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 17:07:05,566 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)] === [2024-06-21 17:07:05,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash -254670694, now seen corresponding path program 18 times [2024-06-21 17:07:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456239827] [2024-06-21 17:07:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456239827] [2024-06-21 17:07:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456239827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:06,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114829716] [2024-06-21 17:07:06,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:06,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:06,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:06,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:06,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:06,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 250 transitions, 3088 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) [2024-06-21 17:07:06,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:06,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:06,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:06,708 INFO L124 PetriNetUnfolderBase]: 701/1289 cut-off events. [2024-06-21 17:07:06,708 INFO L125 PetriNetUnfolderBase]: For 151727/151727 co-relation queries the response was YES. [2024-06-21 17:07:06,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8988 conditions, 1289 events. 701/1289 cut-off events. For 151727/151727 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7085 event pairs, 119 based on Foata normal form. 14/1301 useless extension candidates. Maximal degree in co-relation 8862. Up to 1137 conditions per place. [2024-06-21 17:07:06,720 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 30 changer transitions 12/272 dead transitions. [2024-06-21 17:07:06,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 272 transitions, 3734 flow [2024-06-21 17:07:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 17:07:06,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-21 17:07:06,721 INFO L175 Difference]: Start difference. First operand has 268 places, 250 transitions, 3088 flow. Second operand 10 states and 122 transitions. [2024-06-21 17:07:06,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 272 transitions, 3734 flow [2024-06-21 17:07:07,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 272 transitions, 3669 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:07,099 INFO L231 Difference]: Finished difference. Result has 272 places, 248 transitions, 3080 flow [2024-06-21 17:07:07,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3023, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3080, PETRI_PLACES=272, PETRI_TRANSITIONS=248} [2024-06-21 17:07:07,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-21 17:07:07,099 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 248 transitions, 3080 flow [2024-06-21 17:07:07,099 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) [2024-06-21 17:07:07,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:07,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:07,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 17:07:07,100 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)] === [2024-06-21 17:07:07,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1911442120, now seen corresponding path program 3 times [2024-06-21 17:07:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388449155] [2024-06-21 17:07:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:07,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:07,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388449155] [2024-06-21 17:07:07,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388449155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:07,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:07,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359388337] [2024-06-21 17:07:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:08,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:08,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 248 transitions, 3080 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) [2024-06-21 17:07:08,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:08,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:08,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:08,430 INFO L124 PetriNetUnfolderBase]: 671/1231 cut-off events. [2024-06-21 17:07:08,431 INFO L125 PetriNetUnfolderBase]: For 107344/107344 co-relation queries the response was YES. [2024-06-21 17:07:08,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 1231 events. 671/1231 cut-off events. For 107344/107344 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6696 event pairs, 117 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 8666. Up to 1191 conditions per place. [2024-06-21 17:07:08,441 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 243 selfloop transitions, 16 changer transitions 0/261 dead transitions. [2024-06-21 17:07:08,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 261 transitions, 3644 flow [2024-06-21 17:07:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 17:07:08,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-21 17:07:08,442 INFO L175 Difference]: Start difference. First operand has 272 places, 248 transitions, 3080 flow. Second operand 10 states and 107 transitions. [2024-06-21 17:07:08,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 261 transitions, 3644 flow [2024-06-21 17:07:08,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 261 transitions, 3571 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:08,805 INFO L231 Difference]: Finished difference. Result has 274 places, 249 transitions, 3065 flow [2024-06-21 17:07:08,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3007, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3065, PETRI_PLACES=274, PETRI_TRANSITIONS=249} [2024-06-21 17:07:08,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-21 17:07:08,806 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 249 transitions, 3065 flow [2024-06-21 17:07:08,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:08,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:08,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:08,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 17:07:08,806 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)] === [2024-06-21 17:07:08,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:08,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1619741626, now seen corresponding path program 13 times [2024-06-21 17:07:08,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:08,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048906175] [2024-06-21 17:07:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:09,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:09,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048906175] [2024-06-21 17:07:09,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048906175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:09,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:09,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:09,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853809831] [2024-06-21 17:07:09,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:09,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:09,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:09,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:09,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 249 transitions, 3065 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) [2024-06-21 17:07:09,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:09,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:09,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:09,998 INFO L124 PetriNetUnfolderBase]: 677/1241 cut-off events. [2024-06-21 17:07:09,998 INFO L125 PetriNetUnfolderBase]: For 109928/109928 co-relation queries the response was YES. [2024-06-21 17:07:10,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8863 conditions, 1241 events. 677/1241 cut-off events. For 109928/109928 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6764 event pairs, 118 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 8734. Up to 1167 conditions per place. [2024-06-21 17:07:10,012 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 27 changer transitions 0/267 dead transitions. [2024-06-21 17:07:10,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 267 transitions, 3865 flow [2024-06-21 17:07:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 17:07:10,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 17:07:10,013 INFO L175 Difference]: Start difference. First operand has 274 places, 249 transitions, 3065 flow. Second operand 11 states and 124 transitions. [2024-06-21 17:07:10,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 267 transitions, 3865 flow [2024-06-21 17:07:10,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 267 transitions, 3817 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 17:07:10,375 INFO L231 Difference]: Finished difference. Result has 277 places, 251 transitions, 3136 flow [2024-06-21 17:07:10,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3136, PETRI_PLACES=277, PETRI_TRANSITIONS=251} [2024-06-21 17:07:10,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-21 17:07:10,375 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 251 transitions, 3136 flow [2024-06-21 17:07:10,375 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) [2024-06-21 17:07:10,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:10,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 17:07:10,376 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)] === [2024-06-21 17:07:10,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1492633036, now seen corresponding path program 19 times [2024-06-21 17:07:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260678160] [2024-06-21 17:07:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260678160] [2024-06-21 17:07:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260678160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:10,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:10,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602811624] [2024-06-21 17:07:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:10,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:10,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:10,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:11,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:11,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 251 transitions, 3136 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) [2024-06-21 17:07:11,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:11,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:11,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:11,523 INFO L124 PetriNetUnfolderBase]: 717/1321 cut-off events. [2024-06-21 17:07:11,523 INFO L125 PetriNetUnfolderBase]: For 161894/161894 co-relation queries the response was YES. [2024-06-21 17:07:11,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10252 conditions, 1321 events. 717/1321 cut-off events. For 161894/161894 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7237 event pairs, 128 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 10122. Up to 1070 conditions per place. [2024-06-21 17:07:11,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 226 selfloop transitions, 45 changer transitions 0/273 dead transitions. [2024-06-21 17:07:11,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 273 transitions, 4129 flow [2024-06-21 17:07:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 17:07:11,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 17:07:11,534 INFO L175 Difference]: Start difference. First operand has 277 places, 251 transitions, 3136 flow. Second operand 10 states and 124 transitions. [2024-06-21 17:07:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 273 transitions, 4129 flow [2024-06-21 17:07:12,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 273 transitions, 3999 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:12,065 INFO L231 Difference]: Finished difference. Result has 277 places, 252 transitions, 3123 flow [2024-06-21 17:07:12,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3123, PETRI_PLACES=277, PETRI_TRANSITIONS=252} [2024-06-21 17:07:12,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-21 17:07:12,065 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 252 transitions, 3123 flow [2024-06-21 17:07:12,065 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) [2024-06-21 17:07:12,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:12,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 17:07:12,066 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)] === [2024-06-21 17:07:12,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2146872912, now seen corresponding path program 20 times [2024-06-21 17:07:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:12,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843566540] [2024-06-21 17:07:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:12,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:12,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843566540] [2024-06-21 17:07:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843566540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:12,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:12,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840119963] [2024-06-21 17:07:12,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:12,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:12,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:12,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 252 transitions, 3123 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) [2024-06-21 17:07:12,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:12,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:12,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:13,262 INFO L124 PetriNetUnfolderBase]: 721/1329 cut-off events. [2024-06-21 17:07:13,263 INFO L125 PetriNetUnfolderBase]: For 165436/165436 co-relation queries the response was YES. [2024-06-21 17:07:13,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10254 conditions, 1329 events. 721/1329 cut-off events. For 165436/165436 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7303 event pairs, 134 based on Foata normal form. 2/1329 useless extension candidates. Maximal degree in co-relation 10124. Up to 1198 conditions per place. [2024-06-21 17:07:13,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 221 selfloop transitions, 45 changer transitions 0/268 dead transitions. [2024-06-21 17:07:13,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 268 transitions, 3896 flow [2024-06-21 17:07:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 17:07:13,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-21 17:07:13,277 INFO L175 Difference]: Start difference. First operand has 277 places, 252 transitions, 3123 flow. Second operand 11 states and 125 transitions. [2024-06-21 17:07:13,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 268 transitions, 3896 flow [2024-06-21 17:07:13,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 268 transitions, 3675 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:13,761 INFO L231 Difference]: Finished difference. Result has 278 places, 253 transitions, 3025 flow [2024-06-21 17:07:13,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3025, PETRI_PLACES=278, PETRI_TRANSITIONS=253} [2024-06-21 17:07:13,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-21 17:07:13,761 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 253 transitions, 3025 flow [2024-06-21 17:07:13,761 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) [2024-06-21 17:07:13,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:13,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:13,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 17:07:13,762 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)] === [2024-06-21 17:07:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash -248414584, now seen corresponding path program 21 times [2024-06-21 17:07:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013359411] [2024-06-21 17:07:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:14,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:14,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013359411] [2024-06-21 17:07:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013359411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:14,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:14,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175972537] [2024-06-21 17:07:14,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:14,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:14,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 253 transitions, 3025 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) [2024-06-21 17:07:14,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:14,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:14,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:14,900 INFO L124 PetriNetUnfolderBase]: 745/1381 cut-off events. [2024-06-21 17:07:14,900 INFO L125 PetriNetUnfolderBase]: For 220601/220601 co-relation queries the response was YES. [2024-06-21 17:07:14,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10127 conditions, 1381 events. 745/1381 cut-off events. For 220601/220601 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7690 event pairs, 143 based on Foata normal form. 14/1393 useless extension candidates. Maximal degree in co-relation 9999. Up to 1235 conditions per place. [2024-06-21 17:07:14,913 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 233 selfloop transitions, 25 changer transitions 13/273 dead transitions. [2024-06-21 17:07:14,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 273 transitions, 3647 flow [2024-06-21 17:07:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 17:07:14,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-21 17:07:14,914 INFO L175 Difference]: Start difference. First operand has 278 places, 253 transitions, 3025 flow. Second operand 10 states and 123 transitions. [2024-06-21 17:07:14,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 273 transitions, 3647 flow [2024-06-21 17:07:15,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 273 transitions, 3543 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:15,437 INFO L231 Difference]: Finished difference. Result has 279 places, 248 transitions, 2917 flow [2024-06-21 17:07:15,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2917, PETRI_PLACES=279, PETRI_TRANSITIONS=248} [2024-06-21 17:07:15,438 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-21 17:07:15,438 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 248 transitions, 2917 flow [2024-06-21 17:07:15,438 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) [2024-06-21 17:07:15,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:15,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:15,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 17:07:15,438 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)] === [2024-06-21 17:07:15,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2141665108, now seen corresponding path program 14 times [2024-06-21 17:07:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:15,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957980672] [2024-06-21 17:07:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957980672] [2024-06-21 17:07:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957980672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:16,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:16,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417790431] [2024-06-21 17:07:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:16,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:16,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:16,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:16,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:16,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:16,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 248 transitions, 2917 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) [2024-06-21 17:07:16,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:16,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:16,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:16,519 INFO L124 PetriNetUnfolderBase]: 703/1305 cut-off events. [2024-06-21 17:07:16,519 INFO L125 PetriNetUnfolderBase]: For 159826/159826 co-relation queries the response was YES. [2024-06-21 17:07:16,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 1305 events. 703/1305 cut-off events. For 159826/159826 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7212 event pairs, 140 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 9371. Up to 1229 conditions per place. [2024-06-21 17:07:16,531 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 26 changer transitions 0/260 dead transitions. [2024-06-21 17:07:16,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 260 transitions, 3459 flow [2024-06-21 17:07:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 17:07:16,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 17:07:16,532 INFO L175 Difference]: Start difference. First operand has 279 places, 248 transitions, 2917 flow. Second operand 10 states and 114 transitions. [2024-06-21 17:07:16,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 260 transitions, 3459 flow [2024-06-21 17:07:16,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 260 transitions, 3215 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-21 17:07:16,945 INFO L231 Difference]: Finished difference. Result has 276 places, 248 transitions, 2730 flow [2024-06-21 17:07:16,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2730, PETRI_PLACES=276, PETRI_TRANSITIONS=248} [2024-06-21 17:07:16,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-21 17:07:16,947 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 248 transitions, 2730 flow [2024-06-21 17:07:16,947 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) [2024-06-21 17:07:16,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:16,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:16,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 17:07:16,948 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)] === [2024-06-21 17:07:16,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -886833366, now seen corresponding path program 22 times [2024-06-21 17:07:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505993226] [2024-06-21 17:07:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:16,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505993226] [2024-06-21 17:07:17,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505993226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:17,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:17,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:17,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345704961] [2024-06-21 17:07:17,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:17,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:17,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:17,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:17,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:17,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:17,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 248 transitions, 2730 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) [2024-06-21 17:07:17,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:17,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:17,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:18,053 INFO L124 PetriNetUnfolderBase]: 680/1266 cut-off events. [2024-06-21 17:07:18,053 INFO L125 PetriNetUnfolderBase]: For 153430/153430 co-relation queries the response was YES. [2024-06-21 17:07:18,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7612 conditions, 1266 events. 680/1266 cut-off events. For 153430/153430 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7011 event pairs, 120 based on Foata normal form. 16/1280 useless extension candidates. Maximal degree in co-relation 7485. Up to 1135 conditions per place. [2024-06-21 17:07:18,064 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 16 changer transitions 17/266 dead transitions. [2024-06-21 17:07:18,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 266 transitions, 3316 flow [2024-06-21 17:07:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 17:07:18,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-21 17:07:18,065 INFO L175 Difference]: Start difference. First operand has 276 places, 248 transitions, 2730 flow. Second operand 10 states and 118 transitions. [2024-06-21 17:07:18,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 266 transitions, 3316 flow [2024-06-21 17:07:18,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 266 transitions, 3174 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:18,385 INFO L231 Difference]: Finished difference. Result has 278 places, 238 transitions, 2501 flow [2024-06-21 17:07:18,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2501, PETRI_PLACES=278, PETRI_TRANSITIONS=238} [2024-06-21 17:07:18,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-21 17:07:18,385 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 238 transitions, 2501 flow [2024-06-21 17:07:18,385 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) [2024-06-21 17:07:18,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:18,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 17:07:18,385 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)] === [2024-06-21 17:07:18,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:18,386 INFO L85 PathProgramCache]: Analyzing trace with hash -878552460, now seen corresponding path program 15 times [2024-06-21 17:07:18,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:18,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690102031] [2024-06-21 17:07:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690102031] [2024-06-21 17:07:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690102031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:19,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401721389] [2024-06-21 17:07:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:19,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:19,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:19,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:19,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 238 transitions, 2501 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) [2024-06-21 17:07:19,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:19,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:19,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:19,561 INFO L124 PetriNetUnfolderBase]: 626/1170 cut-off events. [2024-06-21 17:07:19,561 INFO L125 PetriNetUnfolderBase]: For 85467/85467 co-relation queries the response was YES. [2024-06-21 17:07:19,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6821 conditions, 1170 events. 626/1170 cut-off events. For 85467/85467 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6412 event pairs, 109 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 6692. Up to 1120 conditions per place. [2024-06-21 17:07:19,572 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 18 changer transitions 0/251 dead transitions. [2024-06-21 17:07:19,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 251 transitions, 3027 flow [2024-06-21 17:07:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 17:07:19,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 17:07:19,573 INFO L175 Difference]: Start difference. First operand has 278 places, 238 transitions, 2501 flow. Second operand 10 states and 110 transitions. [2024-06-21 17:07:19,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 251 transitions, 3027 flow [2024-06-21 17:07:19,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 251 transitions, 2886 flow, removed 17 selfloop flow, removed 15 redundant places. [2024-06-21 17:07:19,851 INFO L231 Difference]: Finished difference. Result has 271 places, 238 transitions, 2401 flow [2024-06-21 17:07:19,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2401, PETRI_PLACES=271, PETRI_TRANSITIONS=238} [2024-06-21 17:07:19,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-21 17:07:19,852 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 238 transitions, 2401 flow [2024-06-21 17:07:19,852 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) [2024-06-21 17:07:19,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:19,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:19,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 17:07:19,852 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)] === [2024-06-21 17:07:19,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash -591011712, now seen corresponding path program 4 times [2024-06-21 17:07:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:19,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923545247] [2024-06-21 17:07:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:19,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:20,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923545247] [2024-06-21 17:07:20,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923545247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:20,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:20,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278347189] [2024-06-21 17:07:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:20,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:20,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:20,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:20,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 238 transitions, 2401 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) [2024-06-21 17:07:20,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:20,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:20,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:21,139 INFO L124 PetriNetUnfolderBase]: 630/1178 cut-off events. [2024-06-21 17:07:21,139 INFO L125 PetriNetUnfolderBase]: For 78615/78615 co-relation queries the response was YES. [2024-06-21 17:07:21,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 1178 events. 630/1178 cut-off events. For 78615/78615 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6475 event pairs, 106 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 6548. Up to 1138 conditions per place. [2024-06-21 17:07:21,150 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 15 changer transitions 0/251 dead transitions. [2024-06-21 17:07:21,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 251 transitions, 2947 flow [2024-06-21 17:07:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 17:07:21,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 17:07:21,151 INFO L175 Difference]: Start difference. First operand has 271 places, 238 transitions, 2401 flow. Second operand 10 states and 105 transitions. [2024-06-21 17:07:21,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 251 transitions, 2947 flow [2024-06-21 17:07:21,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 251 transitions, 2870 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:21,375 INFO L231 Difference]: Finished difference. Result has 272 places, 239 transitions, 2382 flow [2024-06-21 17:07:21,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2382, PETRI_PLACES=272, PETRI_TRANSITIONS=239} [2024-06-21 17:07:21,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-21 17:07:21,376 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 239 transitions, 2382 flow [2024-06-21 17:07:21,376 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) [2024-06-21 17:07:21,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:21,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:21,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 17:07:21,376 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)] === [2024-06-21 17:07:21,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2110261794, now seen corresponding path program 5 times [2024-06-21 17:07:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:21,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504243974] [2024-06-21 17:07:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:22,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:22,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504243974] [2024-06-21 17:07:22,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504243974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:22,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:22,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666244437] [2024-06-21 17:07:22,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:22,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:22,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:22,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:22,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 239 transitions, 2382 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) [2024-06-21 17:07:22,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:22,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:22,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:22,666 INFO L124 PetriNetUnfolderBase]: 630/1178 cut-off events. [2024-06-21 17:07:22,667 INFO L125 PetriNetUnfolderBase]: For 71682/71682 co-relation queries the response was YES. [2024-06-21 17:07:22,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6426 conditions, 1178 events. 630/1178 cut-off events. For 71682/71682 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6496 event pairs, 109 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 6299. Up to 1122 conditions per place. [2024-06-21 17:07:22,678 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 21 changer transitions 0/255 dead transitions. [2024-06-21 17:07:22,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 255 transitions, 2946 flow [2024-06-21 17:07:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 17:07:22,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 17:07:22,679 INFO L175 Difference]: Start difference. First operand has 272 places, 239 transitions, 2382 flow. Second operand 10 states and 110 transitions. [2024-06-21 17:07:22,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 255 transitions, 2946 flow [2024-06-21 17:07:22,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 255 transitions, 2896 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 17:07:22,978 INFO L231 Difference]: Finished difference. Result has 276 places, 243 transitions, 2432 flow [2024-06-21 17:07:22,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2432, PETRI_PLACES=276, PETRI_TRANSITIONS=243} [2024-06-21 17:07:22,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-21 17:07:22,979 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 243 transitions, 2432 flow [2024-06-21 17:07:22,979 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) [2024-06-21 17:07:22,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:22,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:22,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 17:07:22,980 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)] === [2024-06-21 17:07:22,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1729642690, now seen corresponding path program 16 times [2024-06-21 17:07:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343894140] [2024-06-21 17:07:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:22,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:23,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343894140] [2024-06-21 17:07:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343894140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:23,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:23,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629996384] [2024-06-21 17:07:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:23,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:23,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:23,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 243 transitions, 2432 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) [2024-06-21 17:07:23,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:23,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:23,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:24,274 INFO L124 PetriNetUnfolderBase]: 634/1185 cut-off events. [2024-06-21 17:07:24,274 INFO L125 PetriNetUnfolderBase]: For 64220/64220 co-relation queries the response was YES. [2024-06-21 17:07:24,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6356 conditions, 1185 events. 634/1185 cut-off events. For 64220/64220 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6510 event pairs, 75 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 6226. Up to 916 conditions per place. [2024-06-21 17:07:24,285 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 209 selfloop transitions, 74 changer transitions 0/285 dead transitions. [2024-06-21 17:07:24,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 285 transitions, 3220 flow [2024-06-21 17:07:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 17:07:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 17:07:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-21 17:07:24,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970223325062035 [2024-06-21 17:07:24,288 INFO L175 Difference]: Start difference. First operand has 276 places, 243 transitions, 2432 flow. Second operand 13 states and 160 transitions. [2024-06-21 17:07:24,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 285 transitions, 3220 flow [2024-06-21 17:07:24,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 285 transitions, 3034 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:24,484 INFO L231 Difference]: Finished difference. Result has 285 places, 255 transitions, 2612 flow [2024-06-21 17:07:24,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2612, PETRI_PLACES=285, PETRI_TRANSITIONS=255} [2024-06-21 17:07:24,485 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-21 17:07:24,485 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 255 transitions, 2612 flow [2024-06-21 17:07:24,485 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) [2024-06-21 17:07:24,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:24,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 17:07:24,486 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)] === [2024-06-21 17:07:24,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1536543890, now seen corresponding path program 1 times [2024-06-21 17:07:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279910304] [2024-06-21 17:07:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:25,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:25,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279910304] [2024-06-21 17:07:25,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279910304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:25,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:25,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68288618] [2024-06-21 17:07:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:25,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:25,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:25,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:25,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 255 transitions, 2612 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) [2024-06-21 17:07:25,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:25,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:25,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:25,677 INFO L124 PetriNetUnfolderBase]: 661/1246 cut-off events. [2024-06-21 17:07:25,677 INFO L125 PetriNetUnfolderBase]: For 118932/118932 co-relation queries the response was YES. [2024-06-21 17:07:25,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1246 events. 661/1246 cut-off events. For 118932/118932 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6898 event pairs, 92 based on Foata normal form. 8/1252 useless extension candidates. Maximal degree in co-relation 7121. Up to 559 conditions per place. [2024-06-21 17:07:25,687 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 118 changer transitions 19/284 dead transitions. [2024-06-21 17:07:25,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 284 transitions, 3456 flow [2024-06-21 17:07:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 17:07:25,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 17:07:25,687 INFO L175 Difference]: Start difference. First operand has 285 places, 255 transitions, 2612 flow. Second operand 12 states and 148 transitions. [2024-06-21 17:07:25,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 284 transitions, 3456 flow [2024-06-21 17:07:26,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 284 transitions, 3030 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:26,070 INFO L231 Difference]: Finished difference. Result has 288 places, 250 transitions, 2393 flow [2024-06-21 17:07:26,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2393, PETRI_PLACES=288, PETRI_TRANSITIONS=250} [2024-06-21 17:07:26,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-21 17:07:26,071 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 250 transitions, 2393 flow [2024-06-21 17:07:26,071 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) [2024-06-21 17:07:26,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:26,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:26,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 17:07:26,072 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)] === [2024-06-21 17:07:26,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -957557456, now seen corresponding path program 2 times [2024-06-21 17:07:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:26,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330962207] [2024-06-21 17:07:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:26,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330962207] [2024-06-21 17:07:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330962207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:26,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:26,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074669690] [2024-06-21 17:07:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:26,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:26,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:26,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 250 transitions, 2393 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) [2024-06-21 17:07:26,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:26,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:26,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:27,287 INFO L124 PetriNetUnfolderBase]: 667/1266 cut-off events. [2024-06-21 17:07:27,288 INFO L125 PetriNetUnfolderBase]: For 166769/166769 co-relation queries the response was YES. [2024-06-21 17:07:27,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7863 conditions, 1266 events. 667/1266 cut-off events. For 166769/166769 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7029 event pairs, 107 based on Foata normal form. 8/1272 useless extension candidates. Maximal degree in co-relation 7732. Up to 641 conditions per place. [2024-06-21 17:07:27,324 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 120 changer transitions 14/279 dead transitions. [2024-06-21 17:07:27,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 279 transitions, 3239 flow [2024-06-21 17:07:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 17:07:27,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-21 17:07:27,326 INFO L175 Difference]: Start difference. First operand has 288 places, 250 transitions, 2393 flow. Second operand 12 states and 154 transitions. [2024-06-21 17:07:27,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 279 transitions, 3239 flow [2024-06-21 17:07:27,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 279 transitions, 3057 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:27,895 INFO L231 Difference]: Finished difference. Result has 283 places, 246 transitions, 2441 flow [2024-06-21 17:07:27,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2441, PETRI_PLACES=283, PETRI_TRANSITIONS=246} [2024-06-21 17:07:27,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-21 17:07:27,895 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 246 transitions, 2441 flow [2024-06-21 17:07:27,896 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) [2024-06-21 17:07:27,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:27,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:27,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 17:07:27,896 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)] === [2024-06-21 17:07:27,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1787973184, now seen corresponding path program 3 times [2024-06-21 17:07:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:27,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280798687] [2024-06-21 17:07:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280798687] [2024-06-21 17:07:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280798687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:28,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96873518] [2024-06-21 17:07:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:28,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:28,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:28,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:28,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 246 transitions, 2441 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) [2024-06-21 17:07:28,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:28,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:28,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:29,209 INFO L124 PetriNetUnfolderBase]: 653/1240 cut-off events. [2024-06-21 17:07:29,209 INFO L125 PetriNetUnfolderBase]: For 153283/153283 co-relation queries the response was YES. [2024-06-21 17:07:29,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 1240 events. 653/1240 cut-off events. For 153283/153283 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6828 event pairs, 107 based on Foata normal form. 8/1246 useless extension candidates. Maximal degree in co-relation 7742. Up to 641 conditions per place. [2024-06-21 17:07:29,219 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 119 changer transitions 11/273 dead transitions. [2024-06-21 17:07:29,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 273 transitions, 3263 flow [2024-06-21 17:07:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 17:07:29,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 17:07:29,220 INFO L175 Difference]: Start difference. First operand has 283 places, 246 transitions, 2441 flow. Second operand 11 states and 143 transitions. [2024-06-21 17:07:29,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 273 transitions, 3263 flow [2024-06-21 17:07:29,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 273 transitions, 3011 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:29,616 INFO L231 Difference]: Finished difference. Result has 277 places, 243 transitions, 2417 flow [2024-06-21 17:07:29,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2417, PETRI_PLACES=277, PETRI_TRANSITIONS=243} [2024-06-21 17:07:29,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-21 17:07:29,616 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 243 transitions, 2417 flow [2024-06-21 17:07:29,617 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) [2024-06-21 17:07:29,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:29,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:29,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 17:07:29,617 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)] === [2024-06-21 17:07:29,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1788117334, now seen corresponding path program 4 times [2024-06-21 17:07:29,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:29,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179900770] [2024-06-21 17:07:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:29,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:30,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:30,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179900770] [2024-06-21 17:07:30,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179900770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:30,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:30,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:30,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274320872] [2024-06-21 17:07:30,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:30,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:30,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:30,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:30,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 243 transitions, 2417 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) [2024-06-21 17:07:30,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:30,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:30,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:30,961 INFO L124 PetriNetUnfolderBase]: 643/1222 cut-off events. [2024-06-21 17:07:30,961 INFO L125 PetriNetUnfolderBase]: For 143569/143569 co-relation queries the response was YES. [2024-06-21 17:07:30,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 1222 events. 643/1222 cut-off events. For 143569/143569 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6728 event pairs, 101 based on Foata normal form. 8/1228 useless extension candidates. Maximal degree in co-relation 7606. Up to 641 conditions per place. [2024-06-21 17:07:30,973 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 119 changer transitions 8/269 dead transitions. [2024-06-21 17:07:30,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 269 transitions, 3223 flow [2024-06-21 17:07:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 17:07:30,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-21 17:07:30,974 INFO L175 Difference]: Start difference. First operand has 277 places, 243 transitions, 2417 flow. Second operand 11 states and 140 transitions. [2024-06-21 17:07:30,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 269 transitions, 3223 flow [2024-06-21 17:07:31,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 269 transitions, 2976 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:31,346 INFO L231 Difference]: Finished difference. Result has 274 places, 241 transitions, 2400 flow [2024-06-21 17:07:31,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2400, PETRI_PLACES=274, PETRI_TRANSITIONS=241} [2024-06-21 17:07:31,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-21 17:07:31,347 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 241 transitions, 2400 flow [2024-06-21 17:07:31,347 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) [2024-06-21 17:07:31,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:31,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:31,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 17:07:31,347 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)] === [2024-06-21 17:07:31,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash -953832806, now seen corresponding path program 5 times [2024-06-21 17:07:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664204615] [2024-06-21 17:07:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:31,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664204615] [2024-06-21 17:07:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664204615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:32,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:32,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284850396] [2024-06-21 17:07:32,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:32,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:32,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:32,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:32,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 241 transitions, 2400 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) [2024-06-21 17:07:32,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:32,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:32,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:32,727 INFO L124 PetriNetUnfolderBase]: 628/1197 cut-off events. [2024-06-21 17:07:32,728 INFO L125 PetriNetUnfolderBase]: For 144984/144984 co-relation queries the response was YES. [2024-06-21 17:07:32,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6737 conditions, 1197 events. 628/1197 cut-off events. For 144984/144984 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6596 event pairs, 84 based on Foata normal form. 20/1215 useless extension candidates. Maximal degree in co-relation 6614. Up to 640 conditions per place. [2024-06-21 17:07:32,738 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 113 changer transitions 30/268 dead transitions. [2024-06-21 17:07:32,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 268 transitions, 3022 flow [2024-06-21 17:07:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-21 17:07:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-21 17:07:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 176 transitions. [2024-06-21 17:07:32,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37849462365591396 [2024-06-21 17:07:32,739 INFO L175 Difference]: Start difference. First operand has 274 places, 241 transitions, 2400 flow. Second operand 15 states and 176 transitions. [2024-06-21 17:07:32,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 268 transitions, 3022 flow [2024-06-21 17:07:32,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 268 transitions, 2772 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:32,965 INFO L231 Difference]: Finished difference. Result has 277 places, 221 transitions, 2241 flow [2024-06-21 17:07:32,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2241, PETRI_PLACES=277, PETRI_TRANSITIONS=221} [2024-06-21 17:07:32,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-21 17:07:32,966 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 221 transitions, 2241 flow [2024-06-21 17:07:32,966 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) [2024-06-21 17:07:32,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:32,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:32,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 17:07:32,966 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)] === [2024-06-21 17:07:32,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -656508646, now seen corresponding path program 6 times [2024-06-21 17:07:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463166695] [2024-06-21 17:07:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463166695] [2024-06-21 17:07:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463166695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:33,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:33,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:33,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604333895] [2024-06-21 17:07:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:33,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:33,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:33,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 221 transitions, 2241 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) [2024-06-21 17:07:33,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:33,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:33,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:34,200 INFO L124 PetriNetUnfolderBase]: 557/1067 cut-off events. [2024-06-21 17:07:34,200 INFO L125 PetriNetUnfolderBase]: For 99316/99316 co-relation queries the response was YES. [2024-06-21 17:07:34,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6243 conditions, 1067 events. 557/1067 cut-off events. For 99316/99316 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5800 event pairs, 68 based on Foata normal form. 8/1073 useless extension candidates. Maximal degree in co-relation 6120. Up to 810 conditions per place. [2024-06-21 17:07:34,209 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 46 changer transitions 12/241 dead transitions. [2024-06-21 17:07:34,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 241 transitions, 2784 flow [2024-06-21 17:07:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 17:07:34,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 17:07:34,210 INFO L175 Difference]: Start difference. First operand has 277 places, 221 transitions, 2241 flow. Second operand 11 states and 131 transitions. [2024-06-21 17:07:34,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 241 transitions, 2784 flow [2024-06-21 17:07:34,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 241 transitions, 2431 flow, removed 5 selfloop flow, removed 22 redundant places. [2024-06-21 17:07:34,413 INFO L231 Difference]: Finished difference. Result has 256 places, 218 transitions, 1957 flow [2024-06-21 17:07:34,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=256, PETRI_TRANSITIONS=218} [2024-06-21 17:07:34,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-21 17:07:34,413 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 218 transitions, 1957 flow [2024-06-21 17:07:34,414 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) [2024-06-21 17:07:34,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:34,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:34,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 17:07:34,414 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)] === [2024-06-21 17:07:34,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash -425016754, now seen corresponding path program 7 times [2024-06-21 17:07:34,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:34,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073123644] [2024-06-21 17:07:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:34,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:35,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:35,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073123644] [2024-06-21 17:07:35,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073123644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:35,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:35,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:35,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706997244] [2024-06-21 17:07:35,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:35,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:35,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:35,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:35,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 218 transitions, 1957 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) [2024-06-21 17:07:35,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:35,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:35,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:35,648 INFO L124 PetriNetUnfolderBase]: 548/1052 cut-off events. [2024-06-21 17:07:35,649 INFO L125 PetriNetUnfolderBase]: For 89816/89816 co-relation queries the response was YES. [2024-06-21 17:07:35,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5760 conditions, 1052 events. 548/1052 cut-off events. For 89816/89816 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5694 event pairs, 70 based on Foata normal form. 8/1058 useless extension candidates. Maximal degree in co-relation 5644. Up to 783 conditions per place. [2024-06-21 17:07:35,657 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 52 changer transitions 12/237 dead transitions. [2024-06-21 17:07:35,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 237 transitions, 2485 flow [2024-06-21 17:07:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 17:07:35,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 17:07:35,658 INFO L175 Difference]: Start difference. First operand has 256 places, 218 transitions, 1957 flow. Second operand 12 states and 139 transitions. [2024-06-21 17:07:35,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 237 transitions, 2485 flow [2024-06-21 17:07:35,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 237 transitions, 2386 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:35,825 INFO L231 Difference]: Finished difference. Result has 255 places, 215 transitions, 1941 flow [2024-06-21 17:07:35,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1941, PETRI_PLACES=255, PETRI_TRANSITIONS=215} [2024-06-21 17:07:35,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-21 17:07:35,826 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 215 transitions, 1941 flow [2024-06-21 17:07:35,826 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) [2024-06-21 17:07:35,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:35,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 17:07:35,826 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)] === [2024-06-21 17:07:35,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash -662015176, now seen corresponding path program 8 times [2024-06-21 17:07:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106859824] [2024-06-21 17:07:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:35,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:36,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:36,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106859824] [2024-06-21 17:07:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106859824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:36,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:36,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923885714] [2024-06-21 17:07:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:36,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:36,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:36,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:36,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 215 transitions, 1941 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) [2024-06-21 17:07:36,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:36,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:36,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:37,157 INFO L124 PetriNetUnfolderBase]: 541/1039 cut-off events. [2024-06-21 17:07:37,157 INFO L125 PetriNetUnfolderBase]: For 89770/89770 co-relation queries the response was YES. [2024-06-21 17:07:37,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1039 events. 541/1039 cut-off events. For 89770/89770 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5590 event pairs, 72 based on Foata normal form. 8/1045 useless extension candidates. Maximal degree in co-relation 5592. Up to 765 conditions per place. [2024-06-21 17:07:37,164 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 168 selfloop transitions, 48 changer transitions 16/234 dead transitions. [2024-06-21 17:07:37,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 234 transitions, 2463 flow [2024-06-21 17:07:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 17:07:37,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 17:07:37,165 INFO L175 Difference]: Start difference. First operand has 255 places, 215 transitions, 1941 flow. Second operand 11 states and 131 transitions. [2024-06-21 17:07:37,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 234 transitions, 2463 flow [2024-06-21 17:07:37,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 234 transitions, 2345 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:37,336 INFO L231 Difference]: Finished difference. Result has 251 places, 210 transitions, 1879 flow [2024-06-21 17:07:37,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1879, PETRI_PLACES=251, PETRI_TRANSITIONS=210} [2024-06-21 17:07:37,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-21 17:07:37,337 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 210 transitions, 1879 flow [2024-06-21 17:07:37,337 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) [2024-06-21 17:07:37,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:37,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 17:07:37,337 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)] === [2024-06-21 17:07:37,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash -804118246, now seen corresponding path program 9 times [2024-06-21 17:07:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814929038] [2024-06-21 17:07:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:38,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:38,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814929038] [2024-06-21 17:07:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814929038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:38,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947740462] [2024-06-21 17:07:38,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:38,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:38,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:38,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:38,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:38,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 210 transitions, 1879 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) [2024-06-21 17:07:38,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:38,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:38,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:38,535 INFO L124 PetriNetUnfolderBase]: 550/1062 cut-off events. [2024-06-21 17:07:38,535 INFO L125 PetriNetUnfolderBase]: For 116966/116966 co-relation queries the response was YES. [2024-06-21 17:07:38,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6376 conditions, 1062 events. 550/1062 cut-off events. For 116966/116966 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5722 event pairs, 82 based on Foata normal form. 8/1068 useless extension candidates. Maximal degree in co-relation 6262. Up to 725 conditions per place. [2024-06-21 17:07:38,544 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 43 changer transitions 14/234 dead transitions. [2024-06-21 17:07:38,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 234 transitions, 2589 flow [2024-06-21 17:07:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 17:07:38,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-21 17:07:38,545 INFO L175 Difference]: Start difference. First operand has 251 places, 210 transitions, 1879 flow. Second operand 11 states and 137 transitions. [2024-06-21 17:07:38,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 234 transitions, 2589 flow [2024-06-21 17:07:38,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 234 transitions, 2483 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:38,767 INFO L231 Difference]: Finished difference. Result has 246 places, 206 transitions, 1841 flow [2024-06-21 17:07:38,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1841, PETRI_PLACES=246, PETRI_TRANSITIONS=206} [2024-06-21 17:07:38,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-21 17:07:38,767 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 206 transitions, 1841 flow [2024-06-21 17:07:38,767 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) [2024-06-21 17:07:38,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:38,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:38,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 17:07:38,767 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)] === [2024-06-21 17:07:38,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash -800399176, now seen corresponding path program 10 times [2024-06-21 17:07:38,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:38,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674874718] [2024-06-21 17:07:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:39,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674874718] [2024-06-21 17:07:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674874718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:39,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:39,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517692955] [2024-06-21 17:07:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:39,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:39,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:39,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:39,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:39,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:39,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 206 transitions, 1841 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) [2024-06-21 17:07:39,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:39,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:39,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:40,052 INFO L124 PetriNetUnfolderBase]: 536/1036 cut-off events. [2024-06-21 17:07:40,052 INFO L125 PetriNetUnfolderBase]: For 114151/114151 co-relation queries the response was YES. [2024-06-21 17:07:40,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 1036 events. 536/1036 cut-off events. For 114151/114151 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5538 event pairs, 84 based on Foata normal form. 8/1042 useless extension candidates. Maximal degree in co-relation 6136. Up to 764 conditions per place. [2024-06-21 17:07:40,061 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 49 changer transitions 12/224 dead transitions. [2024-06-21 17:07:40,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 224 transitions, 2341 flow [2024-06-21 17:07:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 17:07:40,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 17:07:40,061 INFO L175 Difference]: Start difference. First operand has 246 places, 206 transitions, 1841 flow. Second operand 11 states and 130 transitions. [2024-06-21 17:07:40,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 224 transitions, 2341 flow [2024-06-21 17:07:40,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 224 transitions, 2249 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:40,281 INFO L231 Difference]: Finished difference. Result has 241 places, 203 transitions, 1829 flow [2024-06-21 17:07:40,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1829, PETRI_PLACES=241, PETRI_TRANSITIONS=203} [2024-06-21 17:07:40,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-21 17:07:40,281 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 203 transitions, 1829 flow [2024-06-21 17:07:40,281 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) [2024-06-21 17:07:40,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:40,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:40,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 17:07:40,282 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)] === [2024-06-21 17:07:40,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash -800543326, now seen corresponding path program 11 times [2024-06-21 17:07:40,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:40,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994381714] [2024-06-21 17:07:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994381714] [2024-06-21 17:07:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994381714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:41,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:41,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080949164] [2024-06-21 17:07:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:41,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:41,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:41,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:41,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 203 transitions, 1829 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) [2024-06-21 17:07:41,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:41,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:41,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:41,540 INFO L124 PetriNetUnfolderBase]: 507/977 cut-off events. [2024-06-21 17:07:41,540 INFO L125 PetriNetUnfolderBase]: For 81318/81318 co-relation queries the response was YES. [2024-06-21 17:07:41,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5379 conditions, 977 events. 507/977 cut-off events. For 81318/81318 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5161 event pairs, 64 based on Foata normal form. 8/983 useless extension candidates. Maximal degree in co-relation 5270. Up to 700 conditions per place. [2024-06-21 17:07:41,548 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 42 changer transitions 24/222 dead transitions. [2024-06-21 17:07:41,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 222 transitions, 2327 flow [2024-06-21 17:07:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 17:07:41,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 17:07:41,549 INFO L175 Difference]: Start difference. First operand has 241 places, 203 transitions, 1829 flow. Second operand 11 states and 130 transitions. [2024-06-21 17:07:41,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 222 transitions, 2327 flow [2024-06-21 17:07:41,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 222 transitions, 2161 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 17:07:41,696 INFO L231 Difference]: Finished difference. Result has 235 places, 191 transitions, 1649 flow [2024-06-21 17:07:41,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1649, PETRI_PLACES=235, PETRI_TRANSITIONS=191} [2024-06-21 17:07:41,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-21 17:07:41,697 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 191 transitions, 1649 flow [2024-06-21 17:07:41,697 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) [2024-06-21 17:07:41,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:41,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:41,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 17:07:41,697 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)] === [2024-06-21 17:07:41,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash -585698000, now seen corresponding path program 12 times [2024-06-21 17:07:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:41,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419301387] [2024-06-21 17:07:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:41,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:42,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:42,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419301387] [2024-06-21 17:07:42,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419301387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:42,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:42,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:42,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329725810] [2024-06-21 17:07:42,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:42,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:42,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:42,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:42,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:42,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 191 transitions, 1649 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) [2024-06-21 17:07:42,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:42,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:42,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:42,894 INFO L124 PetriNetUnfolderBase]: 461/871 cut-off events. [2024-06-21 17:07:42,894 INFO L125 PetriNetUnfolderBase]: For 77160/77160 co-relation queries the response was YES. [2024-06-21 17:07:42,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4833 conditions, 871 events. 461/871 cut-off events. For 77160/77160 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4421 event pairs, 55 based on Foata normal form. 8/877 useless extension candidates. Maximal degree in co-relation 4726. Up to 353 conditions per place. [2024-06-21 17:07:42,900 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 105 changer transitions 14/215 dead transitions. [2024-06-21 17:07:42,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 215 transitions, 2303 flow [2024-06-21 17:07:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-21 17:07:42,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-21 17:07:42,900 INFO L175 Difference]: Start difference. First operand has 235 places, 191 transitions, 1649 flow. Second operand 12 states and 142 transitions. [2024-06-21 17:07:42,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 215 transitions, 2303 flow [2024-06-21 17:07:43,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 215 transitions, 2106 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-06-21 17:07:43,059 INFO L231 Difference]: Finished difference. Result has 222 places, 186 transitions, 1647 flow [2024-06-21 17:07:43,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1647, PETRI_PLACES=222, PETRI_TRANSITIONS=186} [2024-06-21 17:07:43,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-21 17:07:43,060 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 186 transitions, 1647 flow [2024-06-21 17:07:43,060 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) [2024-06-21 17:07:43,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:43,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:43,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 17:07:43,061 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)] === [2024-06-21 17:07:43,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -582123080, now seen corresponding path program 13 times [2024-06-21 17:07:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396619939] [2024-06-21 17:07:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:43,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:43,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396619939] [2024-06-21 17:07:43,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396619939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:43,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:43,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847197627] [2024-06-21 17:07:43,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:43,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:43,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:43,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:43,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:43,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 186 transitions, 1647 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) [2024-06-21 17:07:43,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:43,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:43,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:44,309 INFO L124 PetriNetUnfolderBase]: 474/902 cut-off events. [2024-06-21 17:07:44,309 INFO L125 PetriNetUnfolderBase]: For 96007/96007 co-relation queries the response was YES. [2024-06-21 17:07:44,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5617 conditions, 902 events. 474/902 cut-off events. For 96007/96007 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4635 event pairs, 72 based on Foata normal form. 8/908 useless extension candidates. Maximal degree in co-relation 5517. Up to 422 conditions per place. [2024-06-21 17:07:44,316 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 105 changer transitions 11/212 dead transitions. [2024-06-21 17:07:44,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 212 transitions, 2303 flow [2024-06-21 17:07:44,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 17:07:44,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 17:07:44,316 INFO L175 Difference]: Start difference. First operand has 222 places, 186 transitions, 1647 flow. Second operand 12 states and 148 transitions. [2024-06-21 17:07:44,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 212 transitions, 2303 flow [2024-06-21 17:07:44,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 212 transitions, 2132 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:44,462 INFO L231 Difference]: Finished difference. Result has 217 places, 182 transitions, 1668 flow [2024-06-21 17:07:44,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1668, PETRI_PLACES=217, PETRI_TRANSITIONS=182} [2024-06-21 17:07:44,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-21 17:07:44,462 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 182 transitions, 1668 flow [2024-06-21 17:07:44,463 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) [2024-06-21 17:07:44,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:44,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:44,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 17:07:44,463 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)] === [2024-06-21 17:07:44,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:44,463 INFO L85 PathProgramCache]: Analyzing trace with hash 420191484, now seen corresponding path program 14 times [2024-06-21 17:07:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:44,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258223124] [2024-06-21 17:07:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:44,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:45,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258223124] [2024-06-21 17:07:45,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258223124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:45,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:45,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:45,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274714822] [2024-06-21 17:07:45,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:45,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:45,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:45,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:45,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:45,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 182 transitions, 1668 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) [2024-06-21 17:07:45,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:45,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:45,659 INFO L124 PetriNetUnfolderBase]: 491/941 cut-off events. [2024-06-21 17:07:45,659 INFO L125 PetriNetUnfolderBase]: For 112617/112617 co-relation queries the response was YES. [2024-06-21 17:07:45,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 941 events. 491/941 cut-off events. For 112617/112617 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4893 event pairs, 86 based on Foata normal form. 8/947 useless extension candidates. Maximal degree in co-relation 6371. Up to 638 conditions per place. [2024-06-21 17:07:45,666 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 50 changer transitions 8/205 dead transitions. [2024-06-21 17:07:45,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 205 transitions, 2296 flow [2024-06-21 17:07:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 17:07:45,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 17:07:45,666 INFO L175 Difference]: Start difference. First operand has 217 places, 182 transitions, 1668 flow. Second operand 11 states and 136 transitions. [2024-06-21 17:07:45,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 205 transitions, 2296 flow [2024-06-21 17:07:45,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 205 transitions, 2080 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:45,859 INFO L231 Difference]: Finished difference. Result has 214 places, 179 transitions, 1531 flow [2024-06-21 17:07:45,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1531, PETRI_PLACES=214, PETRI_TRANSITIONS=179} [2024-06-21 17:07:45,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-21 17:07:45,859 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 179 transitions, 1531 flow [2024-06-21 17:07:45,859 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) [2024-06-21 17:07:45,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:45,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 17:07:45,860 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)] === [2024-06-21 17:07:45,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash -443450780, now seen corresponding path program 15 times [2024-06-21 17:07:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821341415] [2024-06-21 17:07:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:46,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:46,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821341415] [2024-06-21 17:07:46,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821341415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:46,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:46,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:46,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164915025] [2024-06-21 17:07:46,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:46,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:46,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:46,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:46,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 179 transitions, 1531 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) [2024-06-21 17:07:46,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:46,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:46,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:47,155 INFO L124 PetriNetUnfolderBase]: 512/988 cut-off events. [2024-06-21 17:07:47,155 INFO L125 PetriNetUnfolderBase]: For 129055/129055 co-relation queries the response was YES. [2024-06-21 17:07:47,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7052 conditions, 988 events. 512/988 cut-off events. For 129055/129055 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5230 event pairs, 102 based on Foata normal form. 8/994 useless extension candidates. Maximal degree in co-relation 6957. Up to 661 conditions per place. [2024-06-21 17:07:47,163 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 66 changer transitions 8/204 dead transitions. [2024-06-21 17:07:47,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 204 transitions, 2159 flow [2024-06-21 17:07:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 17:07:47,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-21 17:07:47,163 INFO L175 Difference]: Start difference. First operand has 214 places, 179 transitions, 1531 flow. Second operand 12 states and 146 transitions. [2024-06-21 17:07:47,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 204 transitions, 2159 flow [2024-06-21 17:07:47,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 204 transitions, 2057 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:47,346 INFO L231 Difference]: Finished difference. Result has 214 places, 176 transitions, 1539 flow [2024-06-21 17:07:47,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1539, PETRI_PLACES=214, PETRI_TRANSITIONS=176} [2024-06-21 17:07:47,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-21 17:07:47,346 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 176 transitions, 1539 flow [2024-06-21 17:07:47,346 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) [2024-06-21 17:07:47,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:47,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:47,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 17:07:47,346 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)] === [2024-06-21 17:07:47,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:47,346 INFO L85 PathProgramCache]: Analyzing trace with hash -581978930, now seen corresponding path program 16 times [2024-06-21 17:07:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:47,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621231867] [2024-06-21 17:07:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:47,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:48,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:48,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621231867] [2024-06-21 17:07:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621231867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:48,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:48,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654015659] [2024-06-21 17:07:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:48,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:48,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 176 transitions, 1539 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) [2024-06-21 17:07:48,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:48,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:48,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:48,552 INFO L124 PetriNetUnfolderBase]: 504/976 cut-off events. [2024-06-21 17:07:48,552 INFO L125 PetriNetUnfolderBase]: For 129021/129021 co-relation queries the response was YES. [2024-06-21 17:07:48,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 976 events. 504/976 cut-off events. For 129021/129021 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5175 event pairs, 86 based on Foata normal form. 8/982 useless extension candidates. Maximal degree in co-relation 6945. Up to 516 conditions per place. [2024-06-21 17:07:48,559 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 101 changer transitions 8/201 dead transitions. [2024-06-21 17:07:48,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 201 transitions, 2161 flow [2024-06-21 17:07:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 17:07:48,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-21 17:07:48,560 INFO L175 Difference]: Start difference. First operand has 214 places, 176 transitions, 1539 flow. Second operand 12 states and 145 transitions. [2024-06-21 17:07:48,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 201 transitions, 2161 flow [2024-06-21 17:07:48,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 201 transitions, 2023 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 17:07:48,726 INFO L231 Difference]: Finished difference. Result has 213 places, 173 transitions, 1579 flow [2024-06-21 17:07:48,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1579, PETRI_PLACES=213, PETRI_TRANSITIONS=173} [2024-06-21 17:07:48,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-21 17:07:48,726 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 173 transitions, 1579 flow [2024-06-21 17:07:48,726 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) [2024-06-21 17:07:48,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:48,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:48,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 17:07:48,727 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)] === [2024-06-21 17:07:48,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash 621764830, now seen corresponding path program 1 times [2024-06-21 17:07:48,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:48,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332521271] [2024-06-21 17:07:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:49,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:49,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332521271] [2024-06-21 17:07:49,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332521271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:49,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:49,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:49,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473161954] [2024-06-21 17:07:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:49,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:49,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:50,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:50,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 173 transitions, 1579 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) [2024-06-21 17:07:50,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:50,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:50,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:50,330 INFO L124 PetriNetUnfolderBase]: 496/964 cut-off events. [2024-06-21 17:07:50,330 INFO L125 PetriNetUnfolderBase]: For 129181/129181 co-relation queries the response was YES. [2024-06-21 17:07:50,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 964 events. 496/964 cut-off events. For 129181/129181 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5083 event pairs, 107 based on Foata normal form. 8/970 useless extension candidates. Maximal degree in co-relation 6985. Up to 765 conditions per place. [2024-06-21 17:07:50,337 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 35 changer transitions 16/189 dead transitions. [2024-06-21 17:07:50,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 189 transitions, 2001 flow [2024-06-21 17:07:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 17:07:50,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-21 17:07:50,338 INFO L175 Difference]: Start difference. First operand has 213 places, 173 transitions, 1579 flow. Second operand 10 states and 117 transitions. [2024-06-21 17:07:50,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 189 transitions, 2001 flow [2024-06-21 17:07:50,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 189 transitions, 1799 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:50,551 INFO L231 Difference]: Finished difference. Result has 210 places, 166 transitions, 1408 flow [2024-06-21 17:07:50,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1408, PETRI_PLACES=210, PETRI_TRANSITIONS=166} [2024-06-21 17:07:50,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-21 17:07:50,551 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 166 transitions, 1408 flow [2024-06-21 17:07:50,551 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) [2024-06-21 17:07:50,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:50,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:50,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 17:07:50,552 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)] === [2024-06-21 17:07:50,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash 614136474, now seen corresponding path program 17 times [2024-06-21 17:07:50,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:50,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303019892] [2024-06-21 17:07:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:51,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:51,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303019892] [2024-06-21 17:07:51,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303019892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:51,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:51,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091666465] [2024-06-21 17:07:51,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:51,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:51,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:51,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:51,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:51,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 166 transitions, 1408 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) [2024-06-21 17:07:51,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:51,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:51,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:51,797 INFO L124 PetriNetUnfolderBase]: 480/932 cut-off events. [2024-06-21 17:07:51,797 INFO L125 PetriNetUnfolderBase]: For 129610/129610 co-relation queries the response was YES. [2024-06-21 17:07:51,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 932 events. 480/932 cut-off events. For 129610/129610 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4886 event pairs, 142 based on Foata normal form. 10/940 useless extension candidates. Maximal degree in co-relation 6691. Up to 758 conditions per place. [2024-06-21 17:07:51,803 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 37 changer transitions 11/189 dead transitions. [2024-06-21 17:07:51,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 189 transitions, 1870 flow [2024-06-21 17:07:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 17:07:51,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-21 17:07:51,804 INFO L175 Difference]: Start difference. First operand has 210 places, 166 transitions, 1408 flow. Second operand 12 states and 137 transitions. [2024-06-21 17:07:51,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 189 transitions, 1870 flow [2024-06-21 17:07:51,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 189 transitions, 1786 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:51,952 INFO L231 Difference]: Finished difference. Result has 209 places, 167 transitions, 1441 flow [2024-06-21 17:07:51,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1441, PETRI_PLACES=209, PETRI_TRANSITIONS=167} [2024-06-21 17:07:51,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-21 17:07:51,952 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 167 transitions, 1441 flow [2024-06-21 17:07:51,952 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) [2024-06-21 17:07:51,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:51,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:51,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 17:07:51,952 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)] === [2024-06-21 17:07:51,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -438082820, now seen corresponding path program 18 times [2024-06-21 17:07:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:51,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328960357] [2024-06-21 17:07:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:51,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328960357] [2024-06-21 17:07:52,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328960357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:52,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:52,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:52,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226552888] [2024-06-21 17:07:52,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:52,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:52,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:52,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:52,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 167 transitions, 1441 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) [2024-06-21 17:07:52,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:52,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:52,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:53,219 INFO L124 PetriNetUnfolderBase]: 472/920 cut-off events. [2024-06-21 17:07:53,219 INFO L125 PetriNetUnfolderBase]: For 122188/122188 co-relation queries the response was YES. [2024-06-21 17:07:53,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 920 events. 472/920 cut-off events. For 122188/122188 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4813 event pairs, 142 based on Foata normal form. 10/928 useless extension candidates. Maximal degree in co-relation 6586. Up to 746 conditions per place. [2024-06-21 17:07:53,226 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 41 changer transitions 11/187 dead transitions. [2024-06-21 17:07:53,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 187 transitions, 1880 flow [2024-06-21 17:07:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 17:07:53,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 17:07:53,227 INFO L175 Difference]: Start difference. First operand has 209 places, 167 transitions, 1441 flow. Second operand 12 states and 138 transitions. [2024-06-21 17:07:53,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 187 transitions, 1880 flow [2024-06-21 17:07:53,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 187 transitions, 1831 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:53,398 INFO L231 Difference]: Finished difference. Result has 212 places, 164 transitions, 1453 flow [2024-06-21 17:07:53,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=212, PETRI_TRANSITIONS=164} [2024-06-21 17:07:53,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 17:07:53,399 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 164 transitions, 1453 flow [2024-06-21 17:07:53,399 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) [2024-06-21 17:07:53,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:53,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 17:07:53,399 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)] === [2024-06-21 17:07:53,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash -443445200, now seen corresponding path program 19 times [2024-06-21 17:07:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:53,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833387240] [2024-06-21 17:07:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833387240] [2024-06-21 17:07:54,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833387240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:54,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:54,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:54,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375066525] [2024-06-21 17:07:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:54,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:54,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:54,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:54,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 164 transitions, 1453 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) [2024-06-21 17:07:54,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:54,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:54,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:54,667 INFO L124 PetriNetUnfolderBase]: 451/885 cut-off events. [2024-06-21 17:07:54,667 INFO L125 PetriNetUnfolderBase]: For 122035/122035 co-relation queries the response was YES. [2024-06-21 17:07:54,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5934 conditions, 885 events. 451/885 cut-off events. For 122035/122035 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4593 event pairs, 97 based on Foata normal form. 20/903 useless extension candidates. Maximal degree in co-relation 5843. Up to 628 conditions per place. [2024-06-21 17:07:54,672 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 46 changer transitions 19/182 dead transitions. [2024-06-21 17:07:54,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 182 transitions, 1871 flow [2024-06-21 17:07:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 17:07:54,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-21 17:07:54,673 INFO L175 Difference]: Start difference. First operand has 212 places, 164 transitions, 1453 flow. Second operand 12 states and 134 transitions. [2024-06-21 17:07:54,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 182 transitions, 1871 flow [2024-06-21 17:07:54,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 182 transitions, 1778 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:54,825 INFO L231 Difference]: Finished difference. Result has 212 places, 153 transitions, 1362 flow [2024-06-21 17:07:54,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1362, PETRI_PLACES=212, PETRI_TRANSITIONS=153} [2024-06-21 17:07:54,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 17:07:54,825 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 153 transitions, 1362 flow [2024-06-21 17:07:54,825 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) [2024-06-21 17:07:54,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:54,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:54,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 17:07:54,825 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)] === [2024-06-21 17:07:54,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash -443594930, now seen corresponding path program 20 times [2024-06-21 17:07:54,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:54,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712053331] [2024-06-21 17:07:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:54,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:55,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712053331] [2024-06-21 17:07:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712053331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:55,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:55,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873969659] [2024-06-21 17:07:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:55,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:55,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:55,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 153 transitions, 1362 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) [2024-06-21 17:07:55,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:55,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:55,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:56,030 INFO L124 PetriNetUnfolderBase]: 427/845 cut-off events. [2024-06-21 17:07:56,031 INFO L125 PetriNetUnfolderBase]: For 110267/110267 co-relation queries the response was YES. [2024-06-21 17:07:56,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6194 conditions, 845 events. 427/845 cut-off events. For 110267/110267 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4353 event pairs, 105 based on Foata normal form. 8/851 useless extension candidates. Maximal degree in co-relation 6104. Up to 571 conditions per place. [2024-06-21 17:07:56,036 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 49 changer transitions 13/176 dead transitions. [2024-06-21 17:07:56,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 176 transitions, 1914 flow [2024-06-21 17:07:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 17:07:56,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 17:07:56,037 INFO L175 Difference]: Start difference. First operand has 212 places, 153 transitions, 1362 flow. Second operand 12 states and 140 transitions. [2024-06-21 17:07:56,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 176 transitions, 1914 flow [2024-06-21 17:07:56,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 176 transitions, 1800 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-21 17:07:56,171 INFO L231 Difference]: Finished difference. Result has 204 places, 147 transitions, 1306 flow [2024-06-21 17:07:56,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1306, PETRI_PLACES=204, PETRI_TRANSITIONS=147} [2024-06-21 17:07:56,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-21 17:07:56,172 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 147 transitions, 1306 flow [2024-06-21 17:07:56,172 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) [2024-06-21 17:07:56,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:56,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:56,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 17:07:56,172 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)] === [2024-06-21 17:07:56,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash -581973350, now seen corresponding path program 21 times [2024-06-21 17:07:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051154010] [2024-06-21 17:07:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:56,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051154010] [2024-06-21 17:07:56,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051154010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:56,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731271824] [2024-06-21 17:07:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:56,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:56,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:56,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:57,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:57,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 147 transitions, 1306 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) [2024-06-21 17:07:57,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:57,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:57,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:57,389 INFO L124 PetriNetUnfolderBase]: 388/768 cut-off events. [2024-06-21 17:07:57,389 INFO L125 PetriNetUnfolderBase]: For 91128/91128 co-relation queries the response was YES. [2024-06-21 17:07:57,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 768 events. 388/768 cut-off events. For 91128/91128 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3834 event pairs, 86 based on Foata normal form. 10/776 useless extension candidates. Maximal degree in co-relation 5186. Up to 431 conditions per place. [2024-06-21 17:07:57,394 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 73 changer transitions 22/166 dead transitions. [2024-06-21 17:07:57,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 166 transitions, 1698 flow [2024-06-21 17:07:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 17:07:57,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 17:07:57,395 INFO L175 Difference]: Start difference. First operand has 204 places, 147 transitions, 1306 flow. Second operand 11 states and 131 transitions. [2024-06-21 17:07:57,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 166 transitions, 1698 flow [2024-06-21 17:07:57,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 166 transitions, 1592 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 17:07:57,494 INFO L231 Difference]: Finished difference. Result has 198 places, 135 transitions, 1259 flow [2024-06-21 17:07:57,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1259, PETRI_PLACES=198, PETRI_TRANSITIONS=135} [2024-06-21 17:07:57,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-21 17:07:57,495 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 135 transitions, 1259 flow [2024-06-21 17:07:57,495 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) [2024-06-21 17:07:57,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:57,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:57,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 17:07:57,495 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)] === [2024-06-21 17:07:57,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1991099976, now seen corresponding path program 22 times [2024-06-21 17:07:57,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:57,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050839331] [2024-06-21 17:07:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:58,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050839331] [2024-06-21 17:07:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050839331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:58,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444815385] [2024-06-21 17:07:58,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:58,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:58,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:58,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:58,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 135 transitions, 1259 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) [2024-06-21 17:07:58,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:58,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:58,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:58,596 INFO L124 PetriNetUnfolderBase]: 340/672 cut-off events. [2024-06-21 17:07:58,596 INFO L125 PetriNetUnfolderBase]: For 67175/67175 co-relation queries the response was YES. [2024-06-21 17:07:58,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4427 conditions, 672 events. 340/672 cut-off events. For 67175/67175 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3215 event pairs, 70 based on Foata normal form. 8/678 useless extension candidates. Maximal degree in co-relation 4342. Up to 470 conditions per place. [2024-06-21 17:07:58,599 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 37 changer transitions 22/152 dead transitions. [2024-06-21 17:07:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 152 transitions, 1611 flow [2024-06-21 17:07:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 17:07:58,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 17:07:58,600 INFO L175 Difference]: Start difference. First operand has 198 places, 135 transitions, 1259 flow. Second operand 11 states and 124 transitions. [2024-06-21 17:07:58,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 152 transitions, 1611 flow [2024-06-21 17:07:58,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 152 transitions, 1453 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:58,691 INFO L231 Difference]: Finished difference. Result has 185 places, 123 transitions, 1090 flow [2024-06-21 17:07:58,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1090, PETRI_PLACES=185, PETRI_TRANSITIONS=123} [2024-06-21 17:07:58,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-21 17:07:58,692 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 123 transitions, 1090 flow [2024-06-21 17:07:58,692 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) [2024-06-21 17:07:58,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:58,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:58,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 17:07:58,692 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)] === [2024-06-21 17:07:58,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1132814512, now seen corresponding path program 23 times [2024-06-21 17:07:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:58,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038935331] [2024-06-21 17:07:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:58,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:59,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038935331] [2024-06-21 17:07:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038935331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:59,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:59,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:59,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308258916] [2024-06-21 17:07:59,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:59,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:59,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:07:59,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 123 transitions, 1090 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) [2024-06-21 17:07:59,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:59,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:07:59,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:59,846 INFO L124 PetriNetUnfolderBase]: 297/583 cut-off events. [2024-06-21 17:07:59,846 INFO L125 PetriNetUnfolderBase]: For 47320/47320 co-relation queries the response was YES. [2024-06-21 17:07:59,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 583 events. 297/583 cut-off events. For 47320/47320 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2650 event pairs, 51 based on Foata normal form. 10/591 useless extension candidates. Maximal degree in co-relation 3290. Up to 406 conditions per place. [2024-06-21 17:07:59,849 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 27 changer transitions 19/140 dead transitions. [2024-06-21 17:07:59,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 140 transitions, 1422 flow [2024-06-21 17:07:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:59,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 17:07:59,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-21 17:07:59,850 INFO L175 Difference]: Start difference. First operand has 185 places, 123 transitions, 1090 flow. Second operand 11 states and 123 transitions. [2024-06-21 17:07:59,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 140 transitions, 1422 flow [2024-06-21 17:07:59,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 140 transitions, 1336 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:59,922 INFO L231 Difference]: Finished difference. Result has 171 places, 114 transitions, 976 flow [2024-06-21 17:07:59,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=976, PETRI_PLACES=171, PETRI_TRANSITIONS=114} [2024-06-21 17:07:59,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-21 17:07:59,923 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 114 transitions, 976 flow [2024-06-21 17:07:59,923 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) [2024-06-21 17:07:59,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:59,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:59,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 17:07:59,923 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)] === [2024-06-21 17:07:59,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1138182472, now seen corresponding path program 24 times [2024-06-21 17:07:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:59,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782039692] [2024-06-21 17:07:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:00,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:00,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782039692] [2024-06-21 17:08:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782039692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:00,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:00,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831148549] [2024-06-21 17:08:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:00,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:00,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:00,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:00,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:00,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 114 transitions, 976 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) [2024-06-21 17:08:00,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:00,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:00,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:01,120 INFO L124 PetriNetUnfolderBase]: 302/598 cut-off events. [2024-06-21 17:08:01,121 INFO L125 PetriNetUnfolderBase]: For 50575/50575 co-relation queries the response was YES. [2024-06-21 17:08:01,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 598 events. 302/598 cut-off events. For 50575/50575 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2751 event pairs, 60 based on Foata normal form. 8/604 useless extension candidates. Maximal degree in co-relation 3662. Up to 346 conditions per place. [2024-06-21 17:08:01,124 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 89 selfloop transitions, 38 changer transitions 8/137 dead transitions. [2024-06-21 17:08:01,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 137 transitions, 1434 flow [2024-06-21 17:08:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 17:08:01,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 17:08:01,125 INFO L175 Difference]: Start difference. First operand has 171 places, 114 transitions, 976 flow. Second operand 11 states and 132 transitions. [2024-06-21 17:08:01,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 137 transitions, 1434 flow [2024-06-21 17:08:01,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 137 transitions, 1360 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:01,197 INFO L231 Difference]: Finished difference. Result has 164 places, 111 transitions, 963 flow [2024-06-21 17:08:01,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=963, PETRI_PLACES=164, PETRI_TRANSITIONS=111} [2024-06-21 17:08:01,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-21 17:08:01,198 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 111 transitions, 963 flow [2024-06-21 17:08:01,198 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) [2024-06-21 17:08:01,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:01,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:01,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 17:08:01,198 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)] === [2024-06-21 17:08:01,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash 414834684, now seen corresponding path program 25 times [2024-06-21 17:08:01,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634724620] [2024-06-21 17:08:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:01,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:01,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634724620] [2024-06-21 17:08:01,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634724620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:01,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:01,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:01,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638070186] [2024-06-21 17:08:01,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:01,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:01,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:02,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:02,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:02,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:02,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 111 transitions, 963 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) [2024-06-21 17:08:02,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:02,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:02,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:02,407 INFO L124 PetriNetUnfolderBase]: 269/535 cut-off events. [2024-06-21 17:08:02,407 INFO L125 PetriNetUnfolderBase]: For 36603/36603 co-relation queries the response was YES. [2024-06-21 17:08:02,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 535 events. 269/535 cut-off events. For 36603/36603 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2386 event pairs, 51 based on Foata normal form. 10/543 useless extension candidates. Maximal degree in co-relation 2924. Up to 346 conditions per place. [2024-06-21 17:08:02,410 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 33 changer transitions 15/129 dead transitions. [2024-06-21 17:08:02,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 129 transitions, 1277 flow [2024-06-21 17:08:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 17:08:02,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-21 17:08:02,411 INFO L175 Difference]: Start difference. First operand has 164 places, 111 transitions, 963 flow. Second operand 11 states and 126 transitions. [2024-06-21 17:08:02,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 129 transitions, 1277 flow [2024-06-21 17:08:02,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 129 transitions, 1201 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:02,460 INFO L231 Difference]: Finished difference. Result has 163 places, 105 transitions, 910 flow [2024-06-21 17:08:02,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=910, PETRI_PLACES=163, PETRI_TRANSITIONS=105} [2024-06-21 17:08:02,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-21 17:08:02,460 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 105 transitions, 910 flow [2024-06-21 17:08:02,460 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) [2024-06-21 17:08:02,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:02,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:02,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 17:08:02,460 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)] === [2024-06-21 17:08:02,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash 414684954, now seen corresponding path program 26 times [2024-06-21 17:08:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404159714] [2024-06-21 17:08:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:03,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:03,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404159714] [2024-06-21 17:08:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404159714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:03,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:03,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759524177] [2024-06-21 17:08:03,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:03,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:03,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:03,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 105 transitions, 910 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) [2024-06-21 17:08:03,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:03,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:03,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:03,627 INFO L124 PetriNetUnfolderBase]: 276/556 cut-off events. [2024-06-21 17:08:03,627 INFO L125 PetriNetUnfolderBase]: For 45049/45049 co-relation queries the response was YES. [2024-06-21 17:08:03,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3481 conditions, 556 events. 276/556 cut-off events. For 45049/45049 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2516 event pairs, 64 based on Foata normal form. 8/562 useless extension candidates. Maximal degree in co-relation 3408. Up to 283 conditions per place. [2024-06-21 17:08:03,630 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 33 changer transitions 16/129 dead transitions. [2024-06-21 17:08:03,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 129 transitions, 1346 flow [2024-06-21 17:08:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 17:08:03,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 17:08:03,631 INFO L175 Difference]: Start difference. First operand has 163 places, 105 transitions, 910 flow. Second operand 12 states and 140 transitions. [2024-06-21 17:08:03,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 129 transitions, 1346 flow [2024-06-21 17:08:03,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 129 transitions, 1268 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:03,695 INFO L231 Difference]: Finished difference. Result has 159 places, 96 transitions, 837 flow [2024-06-21 17:08:03,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=837, PETRI_PLACES=159, PETRI_TRANSITIONS=96} [2024-06-21 17:08:03,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-21 17:08:03,695 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 96 transitions, 837 flow [2024-06-21 17:08:03,695 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) [2024-06-21 17:08:03,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:03,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:03,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 17:08:03,696 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)] === [2024-06-21 17:08:03,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash 614130894, now seen corresponding path program 27 times [2024-06-21 17:08:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310554640] [2024-06-21 17:08:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310554640] [2024-06-21 17:08:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310554640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:04,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:04,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437782915] [2024-06-21 17:08:04,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:04,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:04,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:04,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:04,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:04,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 96 transitions, 837 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) [2024-06-21 17:08:04,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:04,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:04,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:04,786 INFO L124 PetriNetUnfolderBase]: 258/522 cut-off events. [2024-06-21 17:08:04,786 INFO L125 PetriNetUnfolderBase]: For 41543/41543 co-relation queries the response was YES. [2024-06-21 17:08:04,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 522 events. 258/522 cut-off events. For 41543/41543 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2302 event pairs, 54 based on Foata normal form. 8/528 useless extension candidates. Maximal degree in co-relation 3222. Up to 283 conditions per place. [2024-06-21 17:08:04,788 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 24 changer transitions 17/118 dead transitions. [2024-06-21 17:08:04,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 118 transitions, 1243 flow [2024-06-21 17:08:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 17:08:04,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-21 17:08:04,789 INFO L175 Difference]: Start difference. First operand has 159 places, 96 transitions, 837 flow. Second operand 11 states and 129 transitions. [2024-06-21 17:08:04,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 118 transitions, 1243 flow [2024-06-21 17:08:04,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 118 transitions, 1105 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-21 17:08:04,845 INFO L231 Difference]: Finished difference. Result has 147 places, 84 transitions, 665 flow [2024-06-21 17:08:04,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=665, PETRI_PLACES=147, PETRI_TRANSITIONS=84} [2024-06-21 17:08:04,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-21 17:08:04,846 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 84 transitions, 665 flow [2024-06-21 17:08:04,846 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) [2024-06-21 17:08:04,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:04,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:04,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 17:08:04,846 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)] === [2024-06-21 17:08:04,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1152534976, now seen corresponding path program 2 times [2024-06-21 17:08:04,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:04,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751501835] [2024-06-21 17:08:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:05,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:05,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751501835] [2024-06-21 17:08:05,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751501835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:05,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:05,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:05,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270288947] [2024-06-21 17:08:05,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:05,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:05,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:05,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:05,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:05,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 84 transitions, 665 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) [2024-06-21 17:08:05,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:05,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:05,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:06,106 INFO L124 PetriNetUnfolderBase]: 237/472 cut-off events. [2024-06-21 17:08:06,107 INFO L125 PetriNetUnfolderBase]: For 31049/31049 co-relation queries the response was YES. [2024-06-21 17:08:06,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 472 events. 237/472 cut-off events. For 31049/31049 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2026 event pairs, 79 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2947. Up to 404 conditions per place. [2024-06-21 17:08:06,109 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2024-06-21 17:08:06,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 99 transitions, 989 flow [2024-06-21 17:08:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:08:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:08:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 17:08:06,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 17:08:06,110 INFO L175 Difference]: Start difference. First operand has 147 places, 84 transitions, 665 flow. Second operand 10 states and 111 transitions. [2024-06-21 17:08:06,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 99 transitions, 989 flow [2024-06-21 17:08:06,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 99 transitions, 884 flow, removed 13 selfloop flow, removed 19 redundant places. [2024-06-21 17:08:06,146 INFO L231 Difference]: Finished difference. Result has 129 places, 86 transitions, 624 flow [2024-06-21 17:08:06,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=624, PETRI_PLACES=129, PETRI_TRANSITIONS=86} [2024-06-21 17:08:06,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-21 17:08:06,146 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 86 transitions, 624 flow [2024-06-21 17:08:06,147 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) [2024-06-21 17:08:06,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:06,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 17:08:06,147 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)] === [2024-06-21 17:08:06,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1722023940, now seen corresponding path program 28 times [2024-06-21 17:08:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891944956] [2024-06-21 17:08:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:06,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891944956] [2024-06-21 17:08:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891944956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:06,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:06,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527117021] [2024-06-21 17:08:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:06,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:06,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:07,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:07,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 86 transitions, 624 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) [2024-06-21 17:08:07,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:07,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:07,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:07,323 INFO L124 PetriNetUnfolderBase]: 253/508 cut-off events. [2024-06-21 17:08:07,323 INFO L125 PetriNetUnfolderBase]: For 31904/31904 co-relation queries the response was YES. [2024-06-21 17:08:07,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 508 events. 253/508 cut-off events. For 31904/31904 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2265 event pairs, 79 based on Foata normal form. 10/516 useless extension candidates. Maximal degree in co-relation 2902. Up to 394 conditions per place. [2024-06-21 17:08:07,325 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 69 selfloop transitions, 23 changer transitions 11/105 dead transitions. [2024-06-21 17:08:07,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 105 transitions, 894 flow [2024-06-21 17:08:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 17:08:07,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 17:08:07,326 INFO L175 Difference]: Start difference. First operand has 129 places, 86 transitions, 624 flow. Second operand 12 states and 132 transitions. [2024-06-21 17:08:07,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 105 transitions, 894 flow [2024-06-21 17:08:07,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 105 transitions, 867 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 17:08:07,359 INFO L231 Difference]: Finished difference. Result has 135 places, 83 transitions, 626 flow [2024-06-21 17:08:07,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=626, PETRI_PLACES=135, PETRI_TRANSITIONS=83} [2024-06-21 17:08:07,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-21 17:08:07,360 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 83 transitions, 626 flow [2024-06-21 17:08:07,360 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) [2024-06-21 17:08:07,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:07,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:07,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 17:08:07,360 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)] === [2024-06-21 17:08:07,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1466243506, now seen corresponding path program 3 times [2024-06-21 17:08:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:07,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705518061] [2024-06-21 17:08:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705518061] [2024-06-21 17:08:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705518061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:08,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:08,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663400349] [2024-06-21 17:08:08,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:08,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:08,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:08,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 83 transitions, 626 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) [2024-06-21 17:08:08,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:08,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:08,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:08,497 INFO L124 PetriNetUnfolderBase]: 226/455 cut-off events. [2024-06-21 17:08:08,497 INFO L125 PetriNetUnfolderBase]: For 25192/25192 co-relation queries the response was YES. [2024-06-21 17:08:08,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2763 conditions, 455 events. 226/455 cut-off events. For 25192/25192 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1942 event pairs, 80 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2701. Up to 406 conditions per place. [2024-06-21 17:08:08,500 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-21 17:08:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 95 transitions, 842 flow [2024-06-21 17:08:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:08:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:08:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 17:08:08,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 17:08:08,500 INFO L175 Difference]: Start difference. First operand has 135 places, 83 transitions, 626 flow. Second operand 10 states and 109 transitions. [2024-06-21 17:08:08,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 95 transitions, 842 flow [2024-06-21 17:08:08,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 95 transitions, 790 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:08,527 INFO L231 Difference]: Finished difference. Result has 131 places, 83 transitions, 614 flow [2024-06-21 17:08:08,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=614, PETRI_PLACES=131, PETRI_TRANSITIONS=83} [2024-06-21 17:08:08,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 17:08:08,527 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 83 transitions, 614 flow [2024-06-21 17:08:08,528 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) [2024-06-21 17:08:08,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:08,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:08,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 17:08:08,528 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)] === [2024-06-21 17:08:08,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1722029520, now seen corresponding path program 29 times [2024-06-21 17:08:08,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:08,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618755933] [2024-06-21 17:08:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:09,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:09,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618755933] [2024-06-21 17:08:09,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618755933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:09,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:09,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:09,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602215146] [2024-06-21 17:08:09,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:09,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:09,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:09,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:09,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 83 transitions, 614 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) [2024-06-21 17:08:09,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:09,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:09,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:09,596 INFO L124 PetriNetUnfolderBase]: 267/542 cut-off events. [2024-06-21 17:08:09,596 INFO L125 PetriNetUnfolderBase]: For 36584/36584 co-relation queries the response was YES. [2024-06-21 17:08:09,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 542 events. 267/542 cut-off events. For 36584/36584 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2480 event pairs, 91 based on Foata normal form. 8/548 useless extension candidates. Maximal degree in co-relation 3310. Up to 373 conditions per place. [2024-06-21 17:08:09,598 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 76 selfloop transitions, 19 changer transitions 9/106 dead transitions. [2024-06-21 17:08:09,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 106 transitions, 984 flow [2024-06-21 17:08:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 17:08:09,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-21 17:08:09,599 INFO L175 Difference]: Start difference. First operand has 131 places, 83 transitions, 614 flow. Second operand 11 states and 128 transitions. [2024-06-21 17:08:09,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 106 transitions, 984 flow [2024-06-21 17:08:09,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 106 transitions, 945 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 17:08:09,633 INFO L231 Difference]: Finished difference. Result has 133 places, 79 transitions, 588 flow [2024-06-21 17:08:09,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=133, PETRI_TRANSITIONS=79} [2024-06-21 17:08:09,634 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-21 17:08:09,634 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 79 transitions, 588 flow [2024-06-21 17:08:09,634 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) [2024-06-21 17:08:09,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:09,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:09,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 17:08:09,634 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)] === [2024-06-21 17:08:09,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1141493086, now seen corresponding path program 4 times [2024-06-21 17:08:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:09,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857394923] [2024-06-21 17:08:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:09,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:10,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:10,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857394923] [2024-06-21 17:08:10,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857394923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:10,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:10,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:10,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832792154] [2024-06-21 17:08:10,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:10,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:10,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:10,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:10,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:10,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 79 transitions, 588 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) [2024-06-21 17:08:10,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:10,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:10,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:10,779 INFO L124 PetriNetUnfolderBase]: 251/506 cut-off events. [2024-06-21 17:08:10,779 INFO L125 PetriNetUnfolderBase]: For 33479/33479 co-relation queries the response was YES. [2024-06-21 17:08:10,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 506 events. 251/506 cut-off events. For 33479/33479 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2247 event pairs, 91 based on Foata normal form. 2/506 useless extension candidates. Maximal degree in co-relation 3236. Up to 460 conditions per place. [2024-06-21 17:08:10,782 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-21 17:08:10,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 92 transitions, 802 flow [2024-06-21 17:08:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:08:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:08:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 17:08:10,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-21 17:08:10,782 INFO L175 Difference]: Start difference. First operand has 133 places, 79 transitions, 588 flow. Second operand 10 states and 106 transitions. [2024-06-21 17:08:10,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 92 transitions, 802 flow [2024-06-21 17:08:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 92 transitions, 758 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:10,816 INFO L231 Difference]: Finished difference. Result has 127 places, 80 transitions, 586 flow [2024-06-21 17:08:10,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=586, PETRI_PLACES=127, PETRI_TRANSITIONS=80} [2024-06-21 17:08:10,816 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-21 17:08:10,816 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 80 transitions, 586 flow [2024-06-21 17:08:10,816 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) [2024-06-21 17:08:10,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:10,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:10,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 17:08:10,817 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)] === [2024-06-21 17:08:10,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1714395584, now seen corresponding path program 5 times [2024-06-21 17:08:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:10,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623691846] [2024-06-21 17:08:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:10,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:11,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:11,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623691846] [2024-06-21 17:08:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623691846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:11,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:11,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:11,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383766351] [2024-06-21 17:08:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:11,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:11,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 80 transitions, 586 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) [2024-06-21 17:08:11,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:11,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:11,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:12,164 INFO L124 PetriNetUnfolderBase]: 255/514 cut-off events. [2024-06-21 17:08:12,164 INFO L125 PetriNetUnfolderBase]: For 28804/28804 co-relation queries the response was YES. [2024-06-21 17:08:12,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 514 events. 255/514 cut-off events. For 28804/28804 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2314 event pairs, 93 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3160. Up to 473 conditions per place. [2024-06-21 17:08:12,167 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-21 17:08:12,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 93 transitions, 806 flow [2024-06-21 17:08:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:08:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:08:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 17:08:12,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 17:08:12,167 INFO L175 Difference]: Start difference. First operand has 127 places, 80 transitions, 586 flow. Second operand 10 states and 105 transitions. [2024-06-21 17:08:12,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 93 transitions, 806 flow [2024-06-21 17:08:12,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 93 transitions, 774 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 17:08:12,201 INFO L231 Difference]: Finished difference. Result has 129 places, 81 transitions, 594 flow [2024-06-21 17:08:12,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=594, PETRI_PLACES=129, PETRI_TRANSITIONS=81} [2024-06-21 17:08:12,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-21 17:08:12,202 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 81 transitions, 594 flow [2024-06-21 17:08:12,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:12,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:12,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 17:08:12,202 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)] === [2024-06-21 17:08:12,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1466510912, now seen corresponding path program 30 times [2024-06-21 17:08:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:12,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019191469] [2024-06-21 17:08:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:12,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:12,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019191469] [2024-06-21 17:08:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019191469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:12,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:12,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360732962] [2024-06-21 17:08:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:12,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:12,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:13,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:13,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 81 transitions, 594 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) [2024-06-21 17:08:13,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:13,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:13,395 INFO L124 PetriNetUnfolderBase]: 250/511 cut-off events. [2024-06-21 17:08:13,395 INFO L125 PetriNetUnfolderBase]: For 33211/33211 co-relation queries the response was YES. [2024-06-21 17:08:13,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 511 events. 250/511 cut-off events. For 33211/33211 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2325 event pairs, 94 based on Foata normal form. 16/525 useless extension candidates. Maximal degree in co-relation 2790. Up to 388 conditions per place. [2024-06-21 17:08:13,397 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 13 changer transitions 17/99 dead transitions. [2024-06-21 17:08:13,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 99 transitions, 848 flow [2024-06-21 17:08:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 17:08:13,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-21 17:08:13,398 INFO L175 Difference]: Start difference. First operand has 129 places, 81 transitions, 594 flow. Second operand 11 states and 123 transitions. [2024-06-21 17:08:13,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 99 transitions, 848 flow [2024-06-21 17:08:13,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 99 transitions, 818 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 17:08:13,429 INFO L231 Difference]: Finished difference. Result has 132 places, 74 transitions, 543 flow [2024-06-21 17:08:13,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=543, PETRI_PLACES=132, PETRI_TRANSITIONS=74} [2024-06-21 17:08:13,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-21 17:08:13,430 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 74 transitions, 543 flow [2024-06-21 17:08:13,430 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) [2024-06-21 17:08:13,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:13,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:13,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 17:08:13,430 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)] === [2024-06-21 17:08:13,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:13,431 INFO L85 PathProgramCache]: Analyzing trace with hash 695149708, now seen corresponding path program 31 times [2024-06-21 17:08:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:13,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895906912] [2024-06-21 17:08:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:13,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:14,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895906912] [2024-06-21 17:08:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895906912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:14,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:14,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000088975] [2024-06-21 17:08:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:14,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:14,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 74 transitions, 543 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) [2024-06-21 17:08:14,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:14,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:14,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:14,716 INFO L124 PetriNetUnfolderBase]: 226/467 cut-off events. [2024-06-21 17:08:14,716 INFO L125 PetriNetUnfolderBase]: For 30118/30118 co-relation queries the response was YES. [2024-06-21 17:08:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 467 events. 226/467 cut-off events. For 30118/30118 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2080 event pairs, 88 based on Foata normal form. 10/475 useless extension candidates. Maximal degree in co-relation 2656. Up to 353 conditions per place. [2024-06-21 17:08:14,718 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 21 changer transitions 11/94 dead transitions. [2024-06-21 17:08:14,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 94 transitions, 799 flow [2024-06-21 17:08:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 17:08:14,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 17:08:14,719 INFO L175 Difference]: Start difference. First operand has 132 places, 74 transitions, 543 flow. Second operand 12 states and 132 transitions. [2024-06-21 17:08:14,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 94 transitions, 799 flow [2024-06-21 17:08:14,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 94 transitions, 767 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:14,743 INFO L231 Difference]: Finished difference. Result has 128 places, 73 transitions, 552 flow [2024-06-21 17:08:14,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=552, PETRI_PLACES=128, PETRI_TRANSITIONS=73} [2024-06-21 17:08:14,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-21 17:08:14,743 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 73 transitions, 552 flow [2024-06-21 17:08:14,743 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) [2024-06-21 17:08:14,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:14,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:14,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 17:08:14,743 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)] === [2024-06-21 17:08:14,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 695144128, now seen corresponding path program 32 times [2024-06-21 17:08:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:14,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274365069] [2024-06-21 17:08:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:14,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274365069] [2024-06-21 17:08:15,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274365069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:15,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:15,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:15,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713750121] [2024-06-21 17:08:15,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:15,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:15,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 73 transitions, 552 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) [2024-06-21 17:08:15,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:15,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:15,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:15,828 INFO L124 PetriNetUnfolderBase]: 214/447 cut-off events. [2024-06-21 17:08:15,829 INFO L125 PetriNetUnfolderBase]: For 25768/25768 co-relation queries the response was YES. [2024-06-21 17:08:15,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2602 conditions, 447 events. 214/447 cut-off events. For 25768/25768 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1972 event pairs, 84 based on Foata normal form. 8/453 useless extension candidates. Maximal degree in co-relation 2542. Up to 343 conditions per place. [2024-06-21 17:08:15,831 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 17 changer transitions 13/89 dead transitions. [2024-06-21 17:08:15,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 89 transitions, 774 flow [2024-06-21 17:08:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 17:08:15,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 17:08:15,832 INFO L175 Difference]: Start difference. First operand has 128 places, 73 transitions, 552 flow. Second operand 11 states and 121 transitions. [2024-06-21 17:08:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 89 transitions, 774 flow [2024-06-21 17:08:15,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 89 transitions, 726 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:15,858 INFO L231 Difference]: Finished difference. Result has 126 places, 69 transitions, 508 flow [2024-06-21 17:08:15,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=508, PETRI_PLACES=126, PETRI_TRANSITIONS=69} [2024-06-21 17:08:15,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-21 17:08:15,859 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 69 transitions, 508 flow [2024-06-21 17:08:15,859 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) [2024-06-21 17:08:15,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:15,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:15,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 17:08:15,859 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)] === [2024-06-21 17:08:15,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash 889089118, now seen corresponding path program 33 times [2024-06-21 17:08:15,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:15,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624409012] [2024-06-21 17:08:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:15,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624409012] [2024-06-21 17:08:16,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624409012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:16,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:16,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:16,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749607202] [2024-06-21 17:08:16,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:16,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:16,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:16,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:16,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 69 transitions, 508 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) [2024-06-21 17:08:16,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:16,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:16,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:17,100 INFO L124 PetriNetUnfolderBase]: 210/439 cut-off events. [2024-06-21 17:08:17,100 INFO L125 PetriNetUnfolderBase]: For 27204/27204 co-relation queries the response was YES. [2024-06-21 17:08:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 439 events. 210/439 cut-off events. For 27204/27204 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1926 event pairs, 88 based on Foata normal form. 10/447 useless extension candidates. Maximal degree in co-relation 2488. Up to 328 conditions per place. [2024-06-21 17:08:17,102 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 19 changer transitions 11/88 dead transitions. [2024-06-21 17:08:17,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 88 transitions, 742 flow [2024-06-21 17:08:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 17:08:17,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-21 17:08:17,102 INFO L175 Difference]: Start difference. First operand has 126 places, 69 transitions, 508 flow. Second operand 12 states and 135 transitions. [2024-06-21 17:08:17,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 88 transitions, 742 flow [2024-06-21 17:08:17,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 88 transitions, 698 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:17,124 INFO L231 Difference]: Finished difference. Result has 121 places, 66 transitions, 485 flow [2024-06-21 17:08:17,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=485, PETRI_PLACES=121, PETRI_TRANSITIONS=66} [2024-06-21 17:08:17,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-21 17:08:17,125 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 66 transitions, 485 flow [2024-06-21 17:08:17,125 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) [2024-06-21 17:08:17,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:17,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:17,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 17:08:17,125 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)] === [2024-06-21 17:08:17,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash 896717474, now seen corresponding path program 6 times [2024-06-21 17:08:17,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:17,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012042520] [2024-06-21 17:08:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:17,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:18,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:18,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012042520] [2024-06-21 17:08:18,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012042520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:18,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:18,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238513239] [2024-06-21 17:08:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:18,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:18,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 66 transitions, 485 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) [2024-06-21 17:08:18,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:18,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:18,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:18,468 INFO L124 PetriNetUnfolderBase]: 183/386 cut-off events. [2024-06-21 17:08:18,469 INFO L125 PetriNetUnfolderBase]: For 19152/19152 co-relation queries the response was YES. [2024-06-21 17:08:18,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 386 events. 183/386 cut-off events. For 19152/19152 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1606 event pairs, 79 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 2204. Up to 318 conditions per place. [2024-06-21 17:08:18,470 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2024-06-21 17:08:18,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 79 transitions, 671 flow [2024-06-21 17:08:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:08:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:08:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 17:08:18,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 17:08:18,471 INFO L175 Difference]: Start difference. First operand has 121 places, 66 transitions, 485 flow. Second operand 10 states and 113 transitions. [2024-06-21 17:08:18,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 79 transitions, 671 flow [2024-06-21 17:08:18,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 79 transitions, 627 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:18,489 INFO L231 Difference]: Finished difference. Result has 117 places, 66 transitions, 479 flow [2024-06-21 17:08:18,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=479, PETRI_PLACES=117, PETRI_TRANSITIONS=66} [2024-06-21 17:08:18,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-21 17:08:18,490 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 66 transitions, 479 flow [2024-06-21 17:08:18,490 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) [2024-06-21 17:08:18,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:18,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:18,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 17:08:18,490 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)] === [2024-06-21 17:08:18,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash 689637598, now seen corresponding path program 34 times [2024-06-21 17:08:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:18,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288568468] [2024-06-21 17:08:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:19,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:19,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288568468] [2024-06-21 17:08:19,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288568468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:19,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:19,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045728087] [2024-06-21 17:08:19,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:19,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:19,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:19,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:19,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 66 transitions, 479 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) [2024-06-21 17:08:19,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:19,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:19,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:19,682 INFO L124 PetriNetUnfolderBase]: 195/414 cut-off events. [2024-06-21 17:08:19,682 INFO L125 PetriNetUnfolderBase]: For 21874/21874 co-relation queries the response was YES. [2024-06-21 17:08:19,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 414 events. 195/414 cut-off events. For 21874/21874 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1787 event pairs, 73 based on Foata normal form. 8/420 useless extension candidates. Maximal degree in co-relation 2258. Up to 208 conditions per place. [2024-06-21 17:08:19,684 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 22 changer transitions 10/90 dead transitions. [2024-06-21 17:08:19,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 90 transitions, 809 flow [2024-06-21 17:08:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 17:08:19,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 17:08:19,685 INFO L175 Difference]: Start difference. First operand has 117 places, 66 transitions, 479 flow. Second operand 12 states and 139 transitions. [2024-06-21 17:08:19,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 90 transitions, 809 flow [2024-06-21 17:08:19,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 90 transitions, 739 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:19,705 INFO L231 Difference]: Finished difference. Result has 118 places, 63 transitions, 445 flow [2024-06-21 17:08:19,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=445, PETRI_PLACES=118, PETRI_TRANSITIONS=63} [2024-06-21 17:08:19,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-21 17:08:19,705 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 63 transitions, 445 flow [2024-06-21 17:08:19,705 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) [2024-06-21 17:08:19,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:19,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:19,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 17:08:19,705 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)] === [2024-06-21 17:08:19,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:19,706 INFO L85 PathProgramCache]: Analyzing trace with hash 689787328, now seen corresponding path program 35 times [2024-06-21 17:08:19,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:19,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875709093] [2024-06-21 17:08:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:19,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:20,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875709093] [2024-06-21 17:08:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875709093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:20,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:20,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932698368] [2024-06-21 17:08:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:20,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:20,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:20,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:20,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:20,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:20,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 63 transitions, 445 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) [2024-06-21 17:08:20,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:20,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:20,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:20,801 INFO L124 PetriNetUnfolderBase]: 182/391 cut-off events. [2024-06-21 17:08:20,802 INFO L125 PetriNetUnfolderBase]: For 22128/22128 co-relation queries the response was YES. [2024-06-21 17:08:20,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 391 events. 182/391 cut-off events. For 22128/22128 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1666 event pairs, 82 based on Foata normal form. 10/399 useless extension candidates. Maximal degree in co-relation 2064. Up to 274 conditions per place. [2024-06-21 17:08:20,804 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 47 selfloop transitions, 20 changer transitions 11/80 dead transitions. [2024-06-21 17:08:20,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 80 transitions, 655 flow [2024-06-21 17:08:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 17:08:20,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 17:08:20,806 INFO L175 Difference]: Start difference. First operand has 118 places, 63 transitions, 445 flow. Second operand 11 states and 124 transitions. [2024-06-21 17:08:20,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 80 transitions, 655 flow [2024-06-21 17:08:20,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 80 transitions, 598 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:20,822 INFO L231 Difference]: Finished difference. Result has 113 places, 60 transitions, 411 flow [2024-06-21 17:08:20,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=411, PETRI_PLACES=113, PETRI_TRANSITIONS=60} [2024-06-21 17:08:20,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-21 17:08:20,823 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 60 transitions, 411 flow [2024-06-21 17:08:20,823 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) [2024-06-21 17:08:20,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:20,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:20,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 17:08:20,823 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)] === [2024-06-21 17:08:20,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2128551882, now seen corresponding path program 36 times [2024-06-21 17:08:20,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:20,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435599820] [2024-06-21 17:08:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:20,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:21,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435599820] [2024-06-21 17:08:21,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435599820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:21,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:21,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001694404] [2024-06-21 17:08:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:21,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:21,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:21,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 60 transitions, 411 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) [2024-06-21 17:08:21,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:21,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:21,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:21,829 INFO L124 PetriNetUnfolderBase]: 170/371 cut-off events. [2024-06-21 17:08:21,829 INFO L125 PetriNetUnfolderBase]: For 18506/18506 co-relation queries the response was YES. [2024-06-21 17:08:21,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1959 conditions, 371 events. 170/371 cut-off events. For 18506/18506 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1568 event pairs, 78 based on Foata normal form. 8/377 useless extension candidates. Maximal degree in co-relation 1908. Up to 279 conditions per place. [2024-06-21 17:08:21,831 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 49 selfloop transitions, 12 changer transitions 13/76 dead transitions. [2024-06-21 17:08:21,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 76 transitions, 603 flow [2024-06-21 17:08:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 17:08:21,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 17:08:21,832 INFO L175 Difference]: Start difference. First operand has 113 places, 60 transitions, 411 flow. Second operand 11 states and 119 transitions. [2024-06-21 17:08:21,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 76 transitions, 603 flow [2024-06-21 17:08:21,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 76 transitions, 559 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:21,844 INFO L231 Difference]: Finished difference. Result has 111 places, 55 transitions, 364 flow [2024-06-21 17:08:21,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=364, PETRI_PLACES=111, PETRI_TRANSITIONS=55} [2024-06-21 17:08:21,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-21 17:08:21,844 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 55 transitions, 364 flow [2024-06-21 17:08:21,844 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) [2024-06-21 17:08:21,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:21,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:21,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 17:08:21,845 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)] === [2024-06-21 17:08:21,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1967113624, now seen corresponding path program 37 times [2024-06-21 17:08:21,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:21,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324038492] [2024-06-21 17:08:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:21,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:22,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:22,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324038492] [2024-06-21 17:08:22,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324038492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:22,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:22,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513116918] [2024-06-21 17:08:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:22,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:22,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:22,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 55 transitions, 364 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) [2024-06-21 17:08:22,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:22,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:22,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:22,936 INFO L124 PetriNetUnfolderBase]: 139/306 cut-off events. [2024-06-21 17:08:22,936 INFO L125 PetriNetUnfolderBase]: For 13138/13138 co-relation queries the response was YES. [2024-06-21 17:08:22,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 306 events. 139/306 cut-off events. For 13138/13138 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1179 event pairs, 60 based on Foata normal form. 8/312 useless extension candidates. Maximal degree in co-relation 1424. Up to 208 conditions per place. [2024-06-21 17:08:22,937 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 43 selfloop transitions, 14 changer transitions 13/72 dead transitions. [2024-06-21 17:08:22,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 72 transitions, 552 flow [2024-06-21 17:08:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 17:08:22,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 17:08:22,938 INFO L175 Difference]: Start difference. First operand has 111 places, 55 transitions, 364 flow. Second operand 11 states and 122 transitions. [2024-06-21 17:08:22,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 72 transitions, 552 flow [2024-06-21 17:08:22,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 72 transitions, 518 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:22,948 INFO L231 Difference]: Finished difference. Result has 103 places, 51 transitions, 337 flow [2024-06-21 17:08:22,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=337, PETRI_PLACES=103, PETRI_TRANSITIONS=51} [2024-06-21 17:08:22,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-21 17:08:22,949 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 51 transitions, 337 flow [2024-06-21 17:08:22,949 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) [2024-06-21 17:08:22,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:22,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:22,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 17:08:22,949 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)] === [2024-06-21 17:08:22,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:22,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1019540770, now seen corresponding path program 38 times [2024-06-21 17:08:22,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:22,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355318092] [2024-06-21 17:08:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:23,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:23,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355318092] [2024-06-21 17:08:23,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355318092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:23,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:23,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:08:23,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951227137] [2024-06-21 17:08:23,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:23,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:08:23,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:08:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:08:23,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:23,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 51 transitions, 337 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) [2024-06-21 17:08:23,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:23,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:23,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:24,081 INFO L124 PetriNetUnfolderBase]: 106/239 cut-off events. [2024-06-21 17:08:24,081 INFO L125 PetriNetUnfolderBase]: For 6843/6843 co-relation queries the response was YES. [2024-06-21 17:08:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 239 events. 106/239 cut-off events. For 6843/6843 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 843 event pairs, 33 based on Foata normal form. 10/247 useless extension candidates. Maximal degree in co-relation 890. Up to 116 conditions per place. [2024-06-21 17:08:24,082 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 29 selfloop transitions, 11 changer transitions 25/67 dead transitions. [2024-06-21 17:08:24,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 67 transitions, 509 flow [2024-06-21 17:08:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-21 17:08:24,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 17:08:24,082 INFO L175 Difference]: Start difference. First operand has 103 places, 51 transitions, 337 flow. Second operand 12 states and 124 transitions. [2024-06-21 17:08:24,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 67 transitions, 509 flow [2024-06-21 17:08:24,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 67 transitions, 473 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:24,087 INFO L231 Difference]: Finished difference. Result has 97 places, 40 transitions, 263 flow [2024-06-21 17:08:24,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=263, PETRI_PLACES=97, PETRI_TRANSITIONS=40} [2024-06-21 17:08:24,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-21 17:08:24,087 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 40 transitions, 263 flow [2024-06-21 17:08:24,087 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) [2024-06-21 17:08:24,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:24,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:24,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 17:08:24,088 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)] === [2024-06-21 17:08:24,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1933158585, now seen corresponding path program 1 times [2024-06-21 17:08:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988573912] [2024-06-21 17:08:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:25,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988573912] [2024-06-21 17:08:25,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988573912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:25,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:25,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:25,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470176943] [2024-06-21 17:08:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:25,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:25,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:25,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:25,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:25,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:25,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 40 transitions, 263 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) [2024-06-21 17:08:25,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:25,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:25,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:25,597 INFO L124 PetriNetUnfolderBase]: 84/189 cut-off events. [2024-06-21 17:08:25,597 INFO L125 PetriNetUnfolderBase]: For 4158/4158 co-relation queries the response was YES. [2024-06-21 17:08:25,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 189 events. 84/189 cut-off events. For 4158/4158 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 606 event pairs, 22 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 691. Up to 125 conditions per place. [2024-06-21 17:08:25,598 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 30 selfloop transitions, 6 changer transitions 16/54 dead transitions. [2024-06-21 17:08:25,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 54 transitions, 401 flow [2024-06-21 17:08:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-21 17:08:25,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-21 17:08:25,598 INFO L175 Difference]: Start difference. First operand has 97 places, 40 transitions, 263 flow. Second operand 11 states and 109 transitions. [2024-06-21 17:08:25,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 54 transitions, 401 flow [2024-06-21 17:08:25,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 54 transitions, 345 flow, removed 10 selfloop flow, removed 16 redundant places. [2024-06-21 17:08:25,601 INFO L231 Difference]: Finished difference. Result has 74 places, 35 transitions, 196 flow [2024-06-21 17:08:25,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=74, PETRI_TRANSITIONS=35} [2024-06-21 17:08:25,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-21 17:08:25,601 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 35 transitions, 196 flow [2024-06-21 17:08:25,602 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) [2024-06-21 17:08:25,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:25,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:25,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 17:08:25,602 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)] === [2024-06-21 17:08:25,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1026546465, now seen corresponding path program 2 times [2024-06-21 17:08:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274739684] [2024-06-21 17:08:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:26,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:26,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274739684] [2024-06-21 17:08:26,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274739684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:26,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:26,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122838486] [2024-06-21 17:08:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:26,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:26,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:26,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:26,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:26,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 35 transitions, 196 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) [2024-06-21 17:08:26,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:26,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:26,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:26,939 INFO L124 PetriNetUnfolderBase]: 71/162 cut-off events. [2024-06-21 17:08:26,939 INFO L125 PetriNetUnfolderBase]: For 2191/2191 co-relation queries the response was YES. [2024-06-21 17:08:26,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 162 events. 71/162 cut-off events. For 2191/2191 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 469 event pairs, 18 based on Foata normal form. 6/167 useless extension candidates. Maximal degree in co-relation 536. Up to 93 conditions per place. [2024-06-21 17:08:26,940 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 25 selfloop transitions, 8 changer transitions 14/49 dead transitions. [2024-06-21 17:08:26,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 49 transitions, 320 flow [2024-06-21 17:08:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-21 17:08:26,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-21 17:08:26,940 INFO L175 Difference]: Start difference. First operand has 74 places, 35 transitions, 196 flow. Second operand 11 states and 109 transitions. [2024-06-21 17:08:26,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 49 transitions, 320 flow [2024-06-21 17:08:26,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 49 transitions, 300 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 17:08:26,942 INFO L231 Difference]: Finished difference. Result has 67 places, 31 transitions, 176 flow [2024-06-21 17:08:26,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=176, PETRI_PLACES=67, PETRI_TRANSITIONS=31} [2024-06-21 17:08:26,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-21 17:08:26,943 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 31 transitions, 176 flow [2024-06-21 17:08:26,943 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) [2024-06-21 17:08:26,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:26,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:26,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 17:08:26,943 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)] === [2024-06-21 17:08:26,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:26,943 INFO L85 PathProgramCache]: Analyzing trace with hash -614327351, now seen corresponding path program 3 times [2024-06-21 17:08:26,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:26,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066446628] [2024-06-21 17:08:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:26,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:27,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:27,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066446628] [2024-06-21 17:08:27,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066446628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:27,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:27,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120678895] [2024-06-21 17:08:27,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:27,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:27,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:27,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:27,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:28,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:28,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 31 transitions, 176 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) [2024-06-21 17:08:28,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:28,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:28,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:28,243 INFO L124 PetriNetUnfolderBase]: 57/136 cut-off events. [2024-06-21 17:08:28,243 INFO L125 PetriNetUnfolderBase]: For 1563/1563 co-relation queries the response was YES. [2024-06-21 17:08:28,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 136 events. 57/136 cut-off events. For 1563/1563 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 358 event pairs, 16 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 454. Up to 69 conditions per place. [2024-06-21 17:08:28,244 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 21 selfloop transitions, 4 changer transitions 18/45 dead transitions. [2024-06-21 17:08:28,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 45 transitions, 294 flow [2024-06-21 17:08:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-21 17:08:28,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-21 17:08:28,244 INFO L175 Difference]: Start difference. First operand has 67 places, 31 transitions, 176 flow. Second operand 11 states and 107 transitions. [2024-06-21 17:08:28,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 45 transitions, 294 flow [2024-06-21 17:08:28,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 270 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:28,246 INFO L231 Difference]: Finished difference. Result has 61 places, 25 transitions, 131 flow [2024-06-21 17:08:28,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=131, PETRI_PLACES=61, PETRI_TRANSITIONS=25} [2024-06-21 17:08:28,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-21 17:08:28,246 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 25 transitions, 131 flow [2024-06-21 17:08:28,246 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) [2024-06-21 17:08:28,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:28,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:28,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 17:08:28,246 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)] === [2024-06-21 17:08:28,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:28,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1791380703, now seen corresponding path program 4 times [2024-06-21 17:08:28,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:28,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158077427] [2024-06-21 17:08:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:28,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:29,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:29,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158077427] [2024-06-21 17:08:29,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158077427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:29,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:29,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:29,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069787802] [2024-06-21 17:08:29,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:29,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:29,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 17:08:29,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 25 transitions, 131 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) [2024-06-21 17:08:29,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:29,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 17:08:29,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:29,451 INFO L124 PetriNetUnfolderBase]: 28/73 cut-off events. [2024-06-21 17:08:29,451 INFO L125 PetriNetUnfolderBase]: For 537/537 co-relation queries the response was YES. [2024-06-21 17:08:29,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 73 events. 28/73 cut-off events. For 537/537 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 1 based on Foata normal form. 6/78 useless extension candidates. Maximal degree in co-relation 202. Up to 24 conditions per place. [2024-06-21 17:08:29,453 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-21 17:08:29,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 33 transitions, 183 flow [2024-06-21 17:08:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:08:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:08:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-21 17:08:29,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-21 17:08:29,454 INFO L175 Difference]: Start difference. First operand has 61 places, 25 transitions, 131 flow. Second operand 11 states and 96 transitions. [2024-06-21 17:08:29,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 33 transitions, 183 flow [2024-06-21 17:08:29,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:29,454 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-21 17:08:29,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-21 17:08:29,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-21 17:08:29,454 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-21 17:08:29,454 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) [2024-06-21 17:08:29,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 17:08:29,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 17:08:29,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 17:08:29,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 17:08:29,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 17:08:29,460 INFO L445 BasicCegarLoop]: Path program histogram: [38, 22, 16, 11, 8, 6, 6, 6, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:29,462 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 17:08:29,462 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 17:08:29,465 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 17:08:29,465 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 17:08:29,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 05:08:29 BasicIcfg [2024-06-21 17:08:29,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 17:08:29,466 INFO L158 Benchmark]: Toolchain (without parser) took 174640.47ms. Allocated memory was 136.3MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 89.2MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2024-06-21 17:08:29,466 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 136.3MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 17:08:29,467 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 136.3MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 17:08:29,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.12ms. Allocated memory is still 136.3MB. Free memory was 89.2MB in the beginning and 97.8MB in the end (delta: -8.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-21 17:08:29,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.20ms. Allocated memory is still 136.3MB. Free memory was 97.8MB in the beginning and 95.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 17:08:29,467 INFO L158 Benchmark]: Boogie Preprocessor took 58.42ms. Allocated memory is still 136.3MB. Free memory was 95.2MB in the beginning and 92.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 17:08:29,467 INFO L158 Benchmark]: RCFGBuilder took 523.42ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 92.0MB in the beginning and 146.7MB in the end (delta: -54.8MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2024-06-21 17:08:29,468 INFO L158 Benchmark]: TraceAbstraction took 173401.16ms. Allocated memory was 184.5MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 145.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2024-06-21 17:08:29,468 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 136.3MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 136.3MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 586.12ms. Allocated memory is still 136.3MB. Free memory was 89.2MB in the beginning and 97.8MB in the end (delta: -8.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.20ms. Allocated memory is still 136.3MB. Free memory was 97.8MB in the beginning and 95.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.42ms. Allocated memory is still 136.3MB. Free memory was 95.2MB in the beginning and 92.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 523.42ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 92.0MB in the beginning and 146.7MB in the end (delta: -54.8MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. * TraceAbstraction took 173401.16ms. Allocated memory was 184.5MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 145.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 35.6MB. 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: 173.3s, OverallIterations: 149, TraceHistogramMax: 1, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 74.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10335 SdHoareTripleChecker+Valid, 32.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8625 mSDsluCounter, 9534 SdHoareTripleChecker+Invalid, 27.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8423 mSDsCounter, 2279 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55783 IncrementalHoareTripleChecker+Invalid, 58062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2279 mSolverCounterUnsat, 1111 mSDtfsCounter, 55783 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1611 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1611 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3306 ImplicationChecksByTransitivity, 41.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3188occurred in iteration=78, InterpolantAutomatonStates: 1453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 96.9s InterpolantComputationTime, 2421 NumberOfCodeBlocks, 2421 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 2272 ConstructedInterpolants, 0 QuantifiedInterpolants, 101474 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 149 InterpolantComputations, 149 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! [2024-06-21 17:08:29,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE