./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.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/rfi004.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/rfi004.i ./goblint.2024-06-19_11-23-25.files/protection/rfi004.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 17:05:53,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 17:05:53,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 17:05:53,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 17:05:53,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 17:05:53,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 17:05:53,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 17:05:53,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 17:05:53,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 17:05:53,830 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 17:05:53,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 17:05:53,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 17:05:53,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 17:05:53,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 17:05:53,833 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 17:05:53,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 17:05:53,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 17:05:53,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 17:05:53,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 17:05:53,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 17:05:53,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 17:05:53,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 17:05:53,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 17:05:53,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 17:05:53,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 17:05:53,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 17:05:53,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 17:05:53,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 17:05:53,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 17:05:53,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 17:05:53,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 17:05:53,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 17:05:53,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 17:05:53,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 17:05:53,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 17:05:53,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 17:05:53,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 17:05:53,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 17:05:53,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 17:05:53,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 17:05:53,838 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 17:05:53,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 17:05:53,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 17:05:53,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 17:05:54,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 17:05:54,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 17:05:54,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 17:05:54,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 17:05:54,052 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 17:05:54,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-21 17:05:55,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 17:05:55,266 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 17:05:55,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-21 17:05:55,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50c355970/f7fc5c3bbeb24f069a1e85a0801e18d4/FLAG30c21f448 [2024-06-21 17:05:55,291 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50c355970/f7fc5c3bbeb24f069a1e85a0801e18d4 [2024-06-21 17:05:55,294 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 17:05:55,294 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 17:05:55,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi004.yml/witness.yml [2024-06-21 17:05:55,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 17:05:55,439 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 17:05:55,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 17:05:55,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 17:05:55,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 17:05:55,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 05:05:55" (1/2) ... [2024-06-21 17:05:55,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de42817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:55, skipping insertion in model container [2024-06-21 17:05:55,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 05:05:55" (1/2) ... [2024-06-21 17:05:55,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14594480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 05:05:55, skipping insertion in model container [2024-06-21 17:05:55,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 05:05:55" (2/2) ... [2024-06-21 17:05:55,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de42817 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55, skipping insertion in model container [2024-06-21 17:05:55,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 05:05:55" (2/2) ... [2024-06-21 17:05:55,448 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 17:05:55,499 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 17:05:55,501 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-21 17:05:55,501 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-21 17:05:55,501 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 17:05:55,501 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-21 17:05:55,536 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 17:05:55,792 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 17:05:55,799 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 17:05:55,890 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 17:05:55,940 INFO L206 MainTranslator]: Completed translation [2024-06-21 17:05:55,940 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55 WrapperNode [2024-06-21 17:05:55,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 17:05:55,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 17:05:55,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 17:05:55,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 17:05:55,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:55,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,014 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-21 17:05:56,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 17:05:56,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 17:05:56,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 17:05:56,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 17:05:56,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,039 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 17:05:56,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 17:05:56,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 17:05:56,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 17:05:56,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 17:05:56,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (1/1) ... [2024-06-21 17:05:56,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 17:05:56,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 17:05:56,093 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 17:05:56,100 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 17:05:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 17:05:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 17:05:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 17:05:56,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 17:05:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 17:05:56,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 17:05:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 17:05:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 17:05:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 17:05:56,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 17:05:56,126 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 17:05:56,227 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 17:05:56,229 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 17:05:56,509 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 17:05:56,510 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 17:05:56,692 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 17:05:56,692 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 17:05:56,693 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 05:05:56 BoogieIcfgContainer [2024-06-21 17:05:56,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 17:05:56,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 17:05:56,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 17:05:56,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 17:05:56,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 05:05:55" (1/4) ... [2024-06-21 17:05:56,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603f8338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 05:05:56, skipping insertion in model container [2024-06-21 17:05:56,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 05:05:55" (2/4) ... [2024-06-21 17:05:56,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603f8338 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 05:05:56, skipping insertion in model container [2024-06-21 17:05:56,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 05:05:55" (3/4) ... [2024-06-21 17:05:56,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603f8338 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 05:05:56, skipping insertion in model container [2024-06-21 17:05:56,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 05:05:56" (4/4) ... [2024-06-21 17:05:56,704 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-21 17:05:56,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 17:05:56,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 17:05:56,716 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 17:05:56,754 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 17:05:56,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 17:05:56,812 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 17:05:56,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 17:05:56,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 17:05:56,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 17:05:56,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 17:05:56,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 17:05:56,845 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;@2c80cc57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 17:05:56,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 17:05:56,848 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 17:05:56,848 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 17:05:56,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 17:05:56,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:56,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 17:05:56,849 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 17:05:56,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash 329103778, now seen corresponding path program 1 times [2024-06-21 17:05:56,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:56,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975632556] [2024-06-21 17:05:56,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:56,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:57,579 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 17:05:57,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:57,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975632556] [2024-06-21 17:05:57,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975632556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:57,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:57,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 17:05:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258538027] [2024-06-21 17:05:57,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:57,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 17:05:57,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 17:05:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 17:05:57,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-06-21 17:05:57,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:05:57,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:57,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-06-21 17:05:57,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:57,763 INFO L124 PetriNetUnfolderBase]: 131/269 cut-off events. [2024-06-21 17:05:57,764 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-21 17:05:57,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 269 events. 131/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1071 event pairs, 75 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-21 17:05:57,769 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 17:05:57,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 115 flow [2024-06-21 17:05:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 17:05:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 17:05:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-21 17:05:57,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-21 17:05:57,781 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 61 transitions. [2024-06-21 17:05:57,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 115 flow [2024-06-21 17:05:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 17:05:57,785 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 17:05:57,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-21 17:05:57,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 17:05:57,789 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 17:05:57,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:05:57,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:57,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:57,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 17:05:57,791 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 17:05:57,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1558109713, now seen corresponding path program 1 times [2024-06-21 17:05:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:57,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855399346] [2024-06-21 17:05:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:57,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855399346] [2024-06-21 17:05:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855399346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 17:05:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623428589] [2024-06-21 17:05:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:58,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 17:05:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 17:05:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 17:05:58,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 17:05:58,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:05:58,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:58,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 17:05:58,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:58,439 INFO L124 PetriNetUnfolderBase]: 147/286 cut-off events. [2024-06-21 17:05:58,439 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-06-21 17:05:58,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 286 events. 147/286 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1095 event pairs, 59 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 634. Up to 244 conditions per place. [2024-06-21 17:05:58,441 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-21 17:05:58,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 163 flow [2024-06-21 17:05:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 17:05:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 17:05:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-21 17:05:58,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015625 [2024-06-21 17:05:58,442 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 77 transitions. [2024-06-21 17:05:58,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 163 flow [2024-06-21 17:05:58,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 17:05:58,444 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 17:05:58,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 17:05:58,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 17:05:58,444 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 17:05:58,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:05:58,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:58,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:58,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 17:05:58,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 17:05:58,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:58,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2147284969, now seen corresponding path program 1 times [2024-06-21 17:05:58,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:58,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130677419] [2024-06-21 17:05:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:58,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:05:58,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130677419] [2024-06-21 17:05:58,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130677419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:58,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:58,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 17:05:58,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701744174] [2024-06-21 17:05:58,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:58,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 17:05:58,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 17:05:58,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 17:05:58,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-21 17:05:58,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:05:58,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:58,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-21 17:05:58,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:05:59,024 INFO L124 PetriNetUnfolderBase]: 123/252 cut-off events. [2024-06-21 17:05:59,024 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-21 17:05:59,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 252 events. 123/252 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 970 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-21 17:05:59,025 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 23 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-21 17:05:59,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 173 flow [2024-06-21 17:05:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 17:05:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 17:05:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-21 17:05:59,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-21 17:05:59,027 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-21 17:05:59,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 173 flow [2024-06-21 17:05:59,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 17:05:59,028 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-21 17:05:59,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 17:05:59,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 17:05:59,029 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-21 17:05:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:05:59,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:05:59,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:05:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 17:05:59,030 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 17:05:59,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:05:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 260036671, now seen corresponding path program 1 times [2024-06-21 17:05:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:05:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887675154] [2024-06-21 17:05:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:05:59,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:05:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:05:59,842 INFO 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 17:05:59,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:05:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887675154] [2024-06-21 17:05:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887675154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:05:59,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:05:59,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 17:05:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743901461] [2024-06-21 17:05:59,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:05:59,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 17:05:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:05:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 17:05:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 17:05:59,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 17:05:59,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 17:05:59,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:05:59,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 17:05:59,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:00,091 INFO L124 PetriNetUnfolderBase]: 141/279 cut-off events. [2024-06-21 17:06:00,091 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-21 17:06:00,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 279 events. 141/279 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1078 event pairs, 24 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 733. Up to 215 conditions per place. [2024-06-21 17:06:00,093 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-21 17:06:00,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 227 flow [2024-06-21 17:06:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:06:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:06:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-21 17:06:00,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-21 17:06:00,095 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 105 transitions. [2024-06-21 17:06:00,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 227 flow [2024-06-21 17:06:00,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 216 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 17:06:00,096 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-21 17:06:00,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-21 17:06:00,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-21 17:06:00,097 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-21 17:06:00,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 17:06:00,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 17:06:00,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 17:06:00,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2141323674, now seen corresponding path program 1 times [2024-06-21 17:06:00,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:00,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750313075] [2024-06-21 17:06:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750313075] [2024-06-21 17:06:00,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750313075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:00,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:00,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:06:00,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109353996] [2024-06-21 17:06:00,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:00,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:06:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:06:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:06:00,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:00,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 17:06:00,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:00,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:00,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:00,721 INFO L124 PetriNetUnfolderBase]: 139/280 cut-off events. [2024-06-21 17:06:00,721 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-06-21 17:06:00,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 280 events. 139/280 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1078 event pairs, 41 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 797. Up to 242 conditions per place. [2024-06-21 17:06:00,723 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 26 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-21 17:06:00,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 219 flow [2024-06-21 17:06:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:06:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:06:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-21 17:06:00,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-21 17:06:00,724 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 85 transitions. [2024-06-21 17:06:00,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 219 flow [2024-06-21 17:06:00,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 203 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 17:06:00,726 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-21 17:06:00,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-21 17:06:00,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-21 17:06:00,726 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-21 17:06:00,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 17:06:00,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:00,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:00,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 17:06:00,727 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 17:06:00,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:00,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1019246806, now seen corresponding path program 1 times [2024-06-21 17:06:00,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:00,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85768307] [2024-06-21 17:06:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:00,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:01,162 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 17:06:01,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:01,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85768307] [2024-06-21 17:06:01,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85768307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:01,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:01,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:06:01,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575605118] [2024-06-21 17:06:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:01,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:06:01,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:06:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:06:01,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:01,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 17:06:01,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:01,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:01,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:01,373 INFO L124 PetriNetUnfolderBase]: 156/306 cut-off events. [2024-06-21 17:06:01,373 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-21 17:06:01,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 306 events. 156/306 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1198 event pairs, 46 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 937. Up to 255 conditions per place. [2024-06-21 17:06:01,375 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-21 17:06:01,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 258 flow [2024-06-21 17:06:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:06:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:06:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 17:06:01,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-21 17:06:01,376 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 89 transitions. [2024-06-21 17:06:01,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 258 flow [2024-06-21 17:06:01,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 241 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 17:06:01,378 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 162 flow [2024-06-21 17:06:01,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-21 17:06:01,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-21 17:06:01,379 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 162 flow [2024-06-21 17:06:01,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 17:06:01,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:01,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:01,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 17:06:01,380 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 17:06:01,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:01,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1956532426, now seen corresponding path program 2 times [2024-06-21 17:06:01,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:01,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161876364] [2024-06-21 17:06:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:01,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:01,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161876364] [2024-06-21 17:06:01,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161876364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:01,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:01,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:06:01,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370898547] [2024-06-21 17:06:01,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:01,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:06:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:06:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:06:01,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:01,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 17:06:01,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:01,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:01,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:02,012 INFO L124 PetriNetUnfolderBase]: 155/305 cut-off events. [2024-06-21 17:06:02,013 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-21 17:06:02,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 305 events. 155/305 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1227 event pairs, 49 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1006. Up to 246 conditions per place. [2024-06-21 17:06:02,015 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 28 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-21 17:06:02,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 274 flow [2024-06-21 17:06:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:06:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:06:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 17:06:02,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-21 17:06:02,016 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 162 flow. Second operand 6 states and 89 transitions. [2024-06-21 17:06:02,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 274 flow [2024-06-21 17:06:02,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 257 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 17:06:02,018 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 188 flow [2024-06-21 17:06:02,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-21 17:06:02,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-21 17:06:02,019 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 188 flow [2024-06-21 17:06:02,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 17:06:02,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:02,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:02,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 17:06:02,020 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 17:06:02,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:02,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1956523498, now seen corresponding path program 1 times [2024-06-21 17:06:02,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:02,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277566002] [2024-06-21 17:06:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:02,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:02,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:02,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277566002] [2024-06-21 17:06:02,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277566002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:02,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:02,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:06:02,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452280265] [2024-06-21 17:06:02,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:02,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:06:02,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:02,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:06:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:06:02,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:02,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 188 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:02,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:02,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:02,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:02,693 INFO L124 PetriNetUnfolderBase]: 144/291 cut-off events. [2024-06-21 17:06:02,693 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-21 17:06:02,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 291 events. 144/291 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1147 event pairs, 39 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 990. Up to 248 conditions per place. [2024-06-21 17:06:02,695 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-21 17:06:02,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 296 flow [2024-06-21 17:06:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:06:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:06:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-21 17:06:02,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-21 17:06:02,697 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 188 flow. Second operand 7 states and 97 transitions. [2024-06-21 17:06:02,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 296 flow [2024-06-21 17:06:02,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 269 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 17:06:02,700 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 200 flow [2024-06-21 17:06:02,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-21 17:06:02,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-21 17:06:02,706 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 200 flow [2024-06-21 17:06:02,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:02,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:02,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:02,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 17:06:02,708 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 17:06:02,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1531878989, now seen corresponding path program 1 times [2024-06-21 17:06:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:02,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041137229] [2024-06-21 17:06:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:02,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:03,187 INFO 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 17:06:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041137229] [2024-06-21 17:06:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041137229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:03,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:03,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:06:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956646043] [2024-06-21 17:06:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:06:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:06:03,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:06:03,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:03,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 17:06:03,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:03,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:03,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:03,393 INFO L124 PetriNetUnfolderBase]: 170/325 cut-off events. [2024-06-21 17:06:03,393 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-21 17:06:03,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 325 events. 170/325 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1279 event pairs, 45 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 1169. Up to 278 conditions per place. [2024-06-21 17:06:03,395 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-21 17:06:03,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 342 flow [2024-06-21 17:06:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:06:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:06:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-21 17:06:03,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 17:06:03,397 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 200 flow. Second operand 7 states and 96 transitions. [2024-06-21 17:06:03,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 342 flow [2024-06-21 17:06:03,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 319 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:03,399 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 218 flow [2024-06-21 17:06:03,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-21 17:06:03,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-21 17:06:03,399 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 218 flow [2024-06-21 17:06:03,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 17:06:03,400 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] [2024-06-21 17:06:03,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 17:06:03,400 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 17:06:03,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:03,401 INFO L85 PathProgramCache]: Analyzing trace with hash -522962137, now seen corresponding path program 2 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 [2144612677] [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 17:06:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144612677] [2024-06-21 17:06:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144612677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:06:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862062145] [2024-06-21 17:06:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:03,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:06:03,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:03,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:06:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:06:03,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:03,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 17:06:03,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:03,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:03,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:04,069 INFO L124 PetriNetUnfolderBase]: 181/346 cut-off events. [2024-06-21 17:06:04,069 INFO L125 PetriNetUnfolderBase]: For 1714/1714 co-relation queries the response was YES. [2024-06-21 17:06:04,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 346 events. 181/346 cut-off events. For 1714/1714 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1427 event pairs, 52 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1317. Up to 267 conditions per place. [2024-06-21 17:06:04,071 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-21 17:06:04,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 402 flow [2024-06-21 17:06:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:06:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:06:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-21 17:06:04,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-21 17:06:04,072 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 218 flow. Second operand 7 states and 99 transitions. [2024-06-21 17:06:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 402 flow [2024-06-21 17:06:04,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 377 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:04,074 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 268 flow [2024-06-21 17:06:04,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-21 17:06:04,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-21 17:06:04,075 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 268 flow [2024-06-21 17:06:04,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 17:06:04,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:04,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:04,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 17:06:04,075 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 17:06:04,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash -522695227, now seen corresponding path program 3 times [2024-06-21 17:06:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24800388] [2024-06-21 17:06:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:04,539 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 17:06:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24800388] [2024-06-21 17:06:04,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24800388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:04,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:04,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:06:04,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362363619] [2024-06-21 17:06:04,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:04,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:06:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:04,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:06:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:06:04,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:04,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 17:06:04,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:04,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:04,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:04,760 INFO L124 PetriNetUnfolderBase]: 177/338 cut-off events. [2024-06-21 17:06:04,760 INFO L125 PetriNetUnfolderBase]: For 2011/2011 co-relation queries the response was YES. [2024-06-21 17:06:04,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 338 events. 177/338 cut-off events. For 2011/2011 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1384 event pairs, 49 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 1350. Up to 264 conditions per place. [2024-06-21 17:06:04,762 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 33 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-21 17:06:04,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 398 flow [2024-06-21 17:06:04,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:06:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:06:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-21 17:06:04,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-21 17:06:04,764 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 268 flow. Second operand 7 states and 97 transitions. [2024-06-21 17:06:04,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 398 flow [2024-06-21 17:06:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 362 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-21 17:06:04,766 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 273 flow [2024-06-21 17:06:04,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-21 17:06:04,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-21 17:06:04,767 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 273 flow [2024-06-21 17:06:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 17:06:04,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:04,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:04,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 17:06:04,768 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 17:06:04,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1951572715, now seen corresponding path program 1 times [2024-06-21 17:06:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:04,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534724955] [2024-06-21 17:06:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:05,420 INFO 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 17:06:05,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534724955] [2024-06-21 17:06:05,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534724955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:05,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:05,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:06:05,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596114892] [2024-06-21 17:06:05,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:05,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:06:05,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:06:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:06:05,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:05,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:05,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:05,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:05,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:05,734 INFO L124 PetriNetUnfolderBase]: 180/360 cut-off events. [2024-06-21 17:06:05,734 INFO L125 PetriNetUnfolderBase]: For 2347/2347 co-relation queries the response was YES. [2024-06-21 17:06:05,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 360 events. 180/360 cut-off events. For 2347/2347 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1547 event pairs, 46 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1461. Up to 276 conditions per place. [2024-06-21 17:06:05,736 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-06-21 17:06:05,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 478 flow [2024-06-21 17:06:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:05,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-21 17:06:05,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 17:06:05,737 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 273 flow. Second operand 8 states and 116 transitions. [2024-06-21 17:06:05,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 478 flow [2024-06-21 17:06:05,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 433 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:05,740 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 342 flow [2024-06-21 17:06:05,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-06-21 17:06:05,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-21 17:06:05,741 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 342 flow [2024-06-21 17:06:05,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:05,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:05,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 17:06:05,742 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 17:06:05,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -768830461, now seen corresponding path program 2 times [2024-06-21 17:06:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135330100] [2024-06-21 17:06:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:06,414 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 17:06:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135330100] [2024-06-21 17:06:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135330100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:06,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:06,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:06:06,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27275461] [2024-06-21 17:06:06,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:06,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:06:06,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:06,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:06:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:06:06,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:06,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:06,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:06,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:06,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:06,676 INFO L124 PetriNetUnfolderBase]: 178/357 cut-off events. [2024-06-21 17:06:06,677 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2024-06-21 17:06:06,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 357 events. 178/357 cut-off events. For 2704/2704 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1530 event pairs, 45 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1510. Up to 268 conditions per place. [2024-06-21 17:06:06,679 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2024-06-21 17:06:06,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 520 flow [2024-06-21 17:06:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:06:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:06:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-21 17:06:06,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45982142857142855 [2024-06-21 17:06:06,680 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 342 flow. Second operand 7 states and 103 transitions. [2024-06-21 17:06:06,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 520 flow [2024-06-21 17:06:06,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 488 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 17:06:06,685 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 383 flow [2024-06-21 17:06:06,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-21 17:06:06,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-21 17:06:06,686 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 383 flow [2024-06-21 17:06:06,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:06,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:06,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:06,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 17:06:06,687 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 17:06:06,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1143245451, now seen corresponding path program 1 times [2024-06-21 17:06:06,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:06,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877131874] [2024-06-21 17:06:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:06,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:07,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:07,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877131874] [2024-06-21 17:06:07,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877131874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:07,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652924171] [2024-06-21 17:06:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:07,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:07,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:07,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:07,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:07,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:07,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:07,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:07,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:07,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:07,511 INFO L124 PetriNetUnfolderBase]: 196/381 cut-off events. [2024-06-21 17:06:07,511 INFO L125 PetriNetUnfolderBase]: For 3203/3203 co-relation queries the response was YES. [2024-06-21 17:06:07,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 381 events. 196/381 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1615 event pairs, 45 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 1662. Up to 311 conditions per place. [2024-06-21 17:06:07,514 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-21 17:06:07,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 581 flow [2024-06-21 17:06:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-21 17:06:07,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 17:06:07,515 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 383 flow. Second operand 8 states and 108 transitions. [2024-06-21 17:06:07,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 581 flow [2024-06-21 17:06:07,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 528 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:07,519 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 385 flow [2024-06-21 17:06:07,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-06-21 17:06:07,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-21 17:06:07,520 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 385 flow [2024-06-21 17:06:07,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:07,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:07,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:07,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 17:06:07,521 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 17:06:07,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 976614773, now seen corresponding path program 2 times [2024-06-21 17:06:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631241954] [2024-06-21 17:06:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:08,043 INFO 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 17:06:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631241954] [2024-06-21 17:06:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631241954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236826475] [2024-06-21 17:06:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:08,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:08,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 385 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:08,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:08,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:08,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:08,276 INFO L124 PetriNetUnfolderBase]: 207/399 cut-off events. [2024-06-21 17:06:08,276 INFO L125 PetriNetUnfolderBase]: For 3408/3408 co-relation queries the response was YES. [2024-06-21 17:06:08,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 399 events. 207/399 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1718 event pairs, 46 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 1750. Up to 279 conditions per place. [2024-06-21 17:06:08,279 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 47 selfloop transitions, 26 changer transitions 0/77 dead transitions. [2024-06-21 17:06:08,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 645 flow [2024-06-21 17:06:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-21 17:06:08,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-21 17:06:08,280 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 385 flow. Second operand 8 states and 111 transitions. [2024-06-21 17:06:08,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 645 flow [2024-06-21 17:06:08,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 608 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:08,285 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 464 flow [2024-06-21 17:06:08,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2024-06-21 17:06:08,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-21 17:06:08,285 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 464 flow [2024-06-21 17:06:08,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:08,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:08,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:08,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 17:06:08,286 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 17:06:08,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash 976318103, now seen corresponding path program 3 times [2024-06-21 17:06:08,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:08,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402400767] [2024-06-21 17:06:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:08,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:08,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:08,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402400767] [2024-06-21 17:06:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402400767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533597816] [2024-06-21 17:06:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:08,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:08,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:08,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:08,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:08,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:09,052 INFO L124 PetriNetUnfolderBase]: 213/409 cut-off events. [2024-06-21 17:06:09,053 INFO L125 PetriNetUnfolderBase]: For 3976/3976 co-relation queries the response was YES. [2024-06-21 17:06:09,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 409 events. 213/409 cut-off events. For 3976/3976 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1758 event pairs, 46 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 1913. Up to 285 conditions per place. [2024-06-21 17:06:09,055 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 49 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-21 17:06:09,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 712 flow [2024-06-21 17:06:09,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 17:06:09,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 17:06:09,056 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 464 flow. Second operand 8 states and 112 transitions. [2024-06-21 17:06:09,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 712 flow [2024-06-21 17:06:09,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 666 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 17:06:09,060 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 501 flow [2024-06-21 17:06:09,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=501, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-06-21 17:06:09,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-21 17:06:09,061 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 501 flow [2024-06-21 17:06:09,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:09,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:09,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:09,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 17:06:09,061 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 17:06:09,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:09,061 INFO L85 PathProgramCache]: Analyzing trace with hash 968043893, now seen corresponding path program 4 times [2024-06-21 17:06:09,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:09,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234239001] [2024-06-21 17:06:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:09,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:09,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234239001] [2024-06-21 17:06:09,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234239001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:09,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:09,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458637412] [2024-06-21 17:06:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:09,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:09,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:09,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:09,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 501 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:09,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:09,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:09,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:09,785 INFO L124 PetriNetUnfolderBase]: 209/405 cut-off events. [2024-06-21 17:06:09,785 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2024-06-21 17:06:09,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 405 events. 209/405 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1758 event pairs, 52 based on Foata normal form. 2/403 useless extension candidates. Maximal degree in co-relation 1922. Up to 282 conditions per place. [2024-06-21 17:06:09,788 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 49 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-21 17:06:09,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 702 flow [2024-06-21 17:06:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 17:06:09,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 17:06:09,789 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 501 flow. Second operand 8 states and 112 transitions. [2024-06-21 17:06:09,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 702 flow [2024-06-21 17:06:09,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 639 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:09,794 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 504 flow [2024-06-21 17:06:09,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-06-21 17:06:09,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-21 17:06:09,794 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 504 flow [2024-06-21 17:06:09,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:09,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:09,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:09,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 17:06:09,794 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 17:06:09,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash 976625685, now seen corresponding path program 1 times [2024-06-21 17:06:09,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:09,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76896654] [2024-06-21 17:06:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:09,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:10,685 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 17:06:10,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76896654] [2024-06-21 17:06:10,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76896654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:10,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:10,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387275614] [2024-06-21 17:06:10,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:10,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:10,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:10,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:10,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:10,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 504 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:10,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:10,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:10,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:10,909 INFO L124 PetriNetUnfolderBase]: 207/401 cut-off events. [2024-06-21 17:06:10,910 INFO L125 PetriNetUnfolderBase]: For 4264/4266 co-relation queries the response was YES. [2024-06-21 17:06:10,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 401 events. 207/401 cut-off events. For 4264/4266 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1724 event pairs, 55 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1912. Up to 350 conditions per place. [2024-06-21 17:06:10,913 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-21 17:06:10,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 684 flow [2024-06-21 17:06:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 17:06:10,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-21 17:06:10,915 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 504 flow. Second operand 9 states and 113 transitions. [2024-06-21 17:06:10,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 684 flow [2024-06-21 17:06:10,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 642 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:10,922 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 511 flow [2024-06-21 17:06:10,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-06-21 17:06:10,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-21 17:06:10,923 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 511 flow [2024-06-21 17:06:10,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:10,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:10,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:10,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 17:06:10,924 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 17:06:10,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1032382866, now seen corresponding path program 1 times [2024-06-21 17:06:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:10,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371964261] [2024-06-21 17:06:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:11,639 INFO 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 17:06:11,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:11,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371964261] [2024-06-21 17:06:11,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371964261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:11,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:11,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:11,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657270432] [2024-06-21 17:06:11,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:11,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:11,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:11,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 511 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:11,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:11,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:11,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:11,935 INFO L124 PetriNetUnfolderBase]: 205/399 cut-off events. [2024-06-21 17:06:11,936 INFO L125 PetriNetUnfolderBase]: For 4375/4375 co-relation queries the response was YES. [2024-06-21 17:06:11,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 399 events. 205/399 cut-off events. For 4375/4375 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1723 event pairs, 51 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1894. Up to 322 conditions per place. [2024-06-21 17:06:11,938 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-21 17:06:11,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 733 flow [2024-06-21 17:06:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-21 17:06:11,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 17:06:11,941 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 511 flow. Second operand 8 states and 108 transitions. [2024-06-21 17:06:11,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 733 flow [2024-06-21 17:06:11,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 651 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 17:06:11,949 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 505 flow [2024-06-21 17:06:11,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-06-21 17:06:11,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 17:06:11,950 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 505 flow [2024-06-21 17:06:11,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:11,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:11,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:11,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 17:06:11,951 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 17:06:11,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1096274586, now seen corresponding path program 1 times [2024-06-21 17:06:11,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323375727] [2024-06-21 17:06:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:11,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:12,544 INFO 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 17:06:12,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:12,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323375727] [2024-06-21 17:06:12,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323375727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:12,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:12,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:12,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681778823] [2024-06-21 17:06:12,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:12,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:12,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:12,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:12,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:12,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:12,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 505 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:12,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:12,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:12,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:12,812 INFO L124 PetriNetUnfolderBase]: 211/409 cut-off events. [2024-06-21 17:06:12,813 INFO L125 PetriNetUnfolderBase]: For 5000/5000 co-relation queries the response was YES. [2024-06-21 17:06:12,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 409 events. 211/409 cut-off events. For 5000/5000 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1775 event pairs, 46 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 1949. Up to 329 conditions per place. [2024-06-21 17:06:12,815 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-21 17:06:12,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 747 flow [2024-06-21 17:06:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 17:06:12,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 17:06:12,816 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 505 flow. Second operand 9 states and 120 transitions. [2024-06-21 17:06:12,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 747 flow [2024-06-21 17:06:12,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 689 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:12,822 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 512 flow [2024-06-21 17:06:12,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=512, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-21 17:06:12,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-21 17:06:12,822 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 512 flow [2024-06-21 17:06:12,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:12,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 17:06:12,823 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 17:06:12,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash 210287878, now seen corresponding path program 2 times [2024-06-21 17:06:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:12,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092999451] [2024-06-21 17:06:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:13,462 INFO 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 17:06:13,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:13,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092999451] [2024-06-21 17:06:13,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092999451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:13,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:13,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142478053] [2024-06-21 17:06:13,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:13,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:13,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:13,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:13,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 512 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:13,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:13,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:13,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:13,688 INFO L124 PetriNetUnfolderBase]: 232/445 cut-off events. [2024-06-21 17:06:13,688 INFO L125 PetriNetUnfolderBase]: For 6464/6464 co-relation queries the response was YES. [2024-06-21 17:06:13,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 445 events. 232/445 cut-off events. For 6464/6464 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1963 event pairs, 44 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 2222. Up to 277 conditions per place. [2024-06-21 17:06:13,691 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 35 changer transitions 0/95 dead transitions. [2024-06-21 17:06:13,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 906 flow [2024-06-21 17:06:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 17:06:13,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 17:06:13,692 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 512 flow. Second operand 9 states and 126 transitions. [2024-06-21 17:06:13,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 906 flow [2024-06-21 17:06:13,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 95 transitions, 857 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:13,698 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 626 flow [2024-06-21 17:06:13,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-21 17:06:13,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-21 17:06:13,699 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 626 flow [2024-06-21 17:06:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:13,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:13,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:13,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 17:06:13,699 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 17:06:13,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 210614308, now seen corresponding path program 3 times [2024-06-21 17:06:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905061023] [2024-06-21 17:06:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:14,259 INFO 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 17:06:14,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:14,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905061023] [2024-06-21 17:06:14,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905061023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:14,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324770940] [2024-06-21 17:06:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:14,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:14,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:14,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:14,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:14,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:14,539 INFO L124 PetriNetUnfolderBase]: 228/440 cut-off events. [2024-06-21 17:06:14,540 INFO L125 PetriNetUnfolderBase]: For 6817/6819 co-relation queries the response was YES. [2024-06-21 17:06:14,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 440 events. 228/440 cut-off events. For 6817/6819 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1936 event pairs, 60 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 2246. Up to 382 conditions per place. [2024-06-21 17:06:14,543 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-21 17:06:14,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 820 flow [2024-06-21 17:06:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 17:06:14,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 17:06:14,544 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 626 flow. Second operand 9 states and 114 transitions. [2024-06-21 17:06:14,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 820 flow [2024-06-21 17:06:14,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 746 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-21 17:06:14,551 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 585 flow [2024-06-21 17:06:14,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=585, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-21 17:06:14,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-21 17:06:14,551 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 585 flow [2024-06-21 17:06:14,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:14,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:14,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:14,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 17:06:14,552 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 17:06:14,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1151712826, now seen corresponding path program 4 times [2024-06-21 17:06:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:14,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338144258] [2024-06-21 17:06:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:14,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:15,099 INFO 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 17:06:15,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338144258] [2024-06-21 17:06:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338144258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884082517] [2024-06-21 17:06:15,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:15,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:15,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:15,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:15,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 585 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:15,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:15,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:15,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:15,355 INFO L124 PetriNetUnfolderBase]: 234/449 cut-off events. [2024-06-21 17:06:15,355 INFO L125 PetriNetUnfolderBase]: For 7161/7161 co-relation queries the response was YES. [2024-06-21 17:06:15,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 449 events. 234/449 cut-off events. For 7161/7161 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1984 event pairs, 45 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2287. Up to 280 conditions per place. [2024-06-21 17:06:15,358 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 35 changer transitions 0/96 dead transitions. [2024-06-21 17:06:15,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 891 flow [2024-06-21 17:06:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 17:06:15,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 17:06:15,359 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 585 flow. Second operand 9 states and 126 transitions. [2024-06-21 17:06:15,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 891 flow [2024-06-21 17:06:15,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 858 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:15,366 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 657 flow [2024-06-21 17:06:15,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=657, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-21 17:06:15,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-21 17:06:15,367 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 657 flow [2024-06-21 17:06:15,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:15,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:15,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:15,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 17:06:15,368 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 17:06:15,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash -55409402, now seen corresponding path program 5 times [2024-06-21 17:06:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:15,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478833276] [2024-06-21 17:06:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:15,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:15,924 INFO 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 17:06:15,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478833276] [2024-06-21 17:06:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478833276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:15,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:15,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:15,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611199805] [2024-06-21 17:06:15,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:15,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:15,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:15,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 657 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:15,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:15,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:15,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:16,201 INFO L124 PetriNetUnfolderBase]: 230/443 cut-off events. [2024-06-21 17:06:16,201 INFO L125 PetriNetUnfolderBase]: For 7370/7370 co-relation queries the response was YES. [2024-06-21 17:06:16,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 443 events. 230/443 cut-off events. For 7370/7370 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1957 event pairs, 55 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 2301. Up to 277 conditions per place. [2024-06-21 17:06:16,205 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-21 17:06:16,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 887 flow [2024-06-21 17:06:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 17:06:16,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 17:06:16,208 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 657 flow. Second operand 9 states and 126 transitions. [2024-06-21 17:06:16,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 887 flow [2024-06-21 17:06:16,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 801 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:16,221 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 644 flow [2024-06-21 17:06:16,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-21 17:06:16,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-21 17:06:16,222 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 644 flow [2024-06-21 17:06:16,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:16,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:16,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 17:06:16,223 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 17:06:16,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash 210626212, now seen corresponding path program 1 times [2024-06-21 17:06:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888463587] [2024-06-21 17:06:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:16,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:17,022 INFO 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 17:06:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888463587] [2024-06-21 17:06:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888463587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:17,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899161611] [2024-06-21 17:06:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:17,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:17,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:17,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:17,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:17,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 644 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:17,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:17,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:17,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:17,316 INFO L124 PetriNetUnfolderBase]: 227/439 cut-off events. [2024-06-21 17:06:17,316 INFO L125 PetriNetUnfolderBase]: For 7274/7276 co-relation queries the response was YES. [2024-06-21 17:06:17,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 439 events. 227/439 cut-off events. For 7274/7276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1933 event pairs, 60 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2238. Up to 378 conditions per place. [2024-06-21 17:06:17,319 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-06-21 17:06:17,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 844 flow [2024-06-21 17:06:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 17:06:17,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 17:06:17,321 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 644 flow. Second operand 10 states and 123 transitions. [2024-06-21 17:06:17,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 91 transitions, 844 flow [2024-06-21 17:06:17,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 738 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:17,330 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 572 flow [2024-06-21 17:06:17,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=572, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-21 17:06:17,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-21 17:06:17,330 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 572 flow [2024-06-21 17:06:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:17,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:17,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:17,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 17:06:17,331 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 17:06:17,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash 562313588, now seen corresponding path program 1 times [2024-06-21 17:06:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643688266] [2024-06-21 17:06:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:17,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:18,008 INFO 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 17:06:18,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:18,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643688266] [2024-06-21 17:06:18,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643688266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:18,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:18,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:18,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756115124] [2024-06-21 17:06:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:18,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:18,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:18,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:18,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:18,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 572 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:18,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:18,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:18,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:18,324 INFO L124 PetriNetUnfolderBase]: 212/427 cut-off events. [2024-06-21 17:06:18,324 INFO L125 PetriNetUnfolderBase]: For 7927/7928 co-relation queries the response was YES. [2024-06-21 17:06:18,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 427 events. 212/427 cut-off events. For 7927/7928 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1920 event pairs, 29 based on Foata normal form. 3/429 useless extension candidates. Maximal degree in co-relation 2136. Up to 307 conditions per place. [2024-06-21 17:06:18,327 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 70 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-21 17:06:18,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 796 flow [2024-06-21 17:06:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-21 17:06:18,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-21 17:06:18,328 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 572 flow. Second operand 8 states and 114 transitions. [2024-06-21 17:06:18,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 796 flow [2024-06-21 17:06:18,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 758 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:18,335 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 582 flow [2024-06-21 17:06:18,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=582, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-21 17:06:18,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-21 17:06:18,336 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 582 flow [2024-06-21 17:06:18,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:18,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:18,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:18,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 17:06:18,336 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 17:06:18,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:18,337 INFO L85 PathProgramCache]: Analyzing trace with hash 675398422, now seen corresponding path program 2 times [2024-06-21 17:06:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:18,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710815234] [2024-06-21 17:06:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:18,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710815234] [2024-06-21 17:06:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710815234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805294899] [2024-06-21 17:06:18,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:18,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:18,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:19,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 582 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:19,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:19,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:19,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:19,289 INFO L124 PetriNetUnfolderBase]: 216/435 cut-off events. [2024-06-21 17:06:19,289 INFO L125 PetriNetUnfolderBase]: For 8600/8601 co-relation queries the response was YES. [2024-06-21 17:06:19,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 435 events. 216/435 cut-off events. For 8600/8601 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1967 event pairs, 46 based on Foata normal form. 3/437 useless extension candidates. Maximal degree in co-relation 2199. Up to 331 conditions per place. [2024-06-21 17:06:19,293 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 67 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2024-06-21 17:06:19,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 806 flow [2024-06-21 17:06:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-21 17:06:19,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44921875 [2024-06-21 17:06:19,294 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 582 flow. Second operand 8 states and 115 transitions. [2024-06-21 17:06:19,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 806 flow [2024-06-21 17:06:19,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 768 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:19,303 INFO L231 Difference]: Finished difference. Result has 99 places, 82 transitions, 601 flow [2024-06-21 17:06:19,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=601, PETRI_PLACES=99, PETRI_TRANSITIONS=82} [2024-06-21 17:06:19,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-21 17:06:19,304 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 82 transitions, 601 flow [2024-06-21 17:06:19,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:19,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:19,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:19,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 17:06:19,305 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 17:06:19,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash 565175508, now seen corresponding path program 1 times [2024-06-21 17:06:19,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:19,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753343179] [2024-06-21 17:06:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:19,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:20,042 INFO 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 17:06:20,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:20,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753343179] [2024-06-21 17:06:20,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753343179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:20,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:20,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:20,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313616030] [2024-06-21 17:06:20,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:20,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:20,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:20,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:20,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:20,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:20,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 82 transitions, 601 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:20,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:20,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:20,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:20,349 INFO L124 PetriNetUnfolderBase]: 233/453 cut-off events. [2024-06-21 17:06:20,349 INFO L125 PetriNetUnfolderBase]: For 8273/8273 co-relation queries the response was YES. [2024-06-21 17:06:20,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 453 events. 233/453 cut-off events. For 8273/8273 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2023 event pairs, 54 based on Foata normal form. 1/453 useless extension candidates. Maximal degree in co-relation 2252. Up to 369 conditions per place. [2024-06-21 17:06:20,354 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-21 17:06:20,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 859 flow [2024-06-21 17:06:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 17:06:20,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 17:06:20,355 INFO L175 Difference]: Start difference. First operand has 99 places, 82 transitions, 601 flow. Second operand 9 states and 119 transitions. [2024-06-21 17:06:20,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 859 flow [2024-06-21 17:06:20,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 814 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:20,365 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 639 flow [2024-06-21 17:06:20,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-06-21 17:06:20,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-21 17:06:20,371 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 639 flow [2024-06-21 17:06:20,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:20,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:20,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 17:06:20,371 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 17:06:20,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 846100852, now seen corresponding path program 3 times [2024-06-21 17:06:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:20,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896283980] [2024-06-21 17:06:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:20,985 INFO 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 17:06:20,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:20,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896283980] [2024-06-21 17:06:20,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896283980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:20,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:20,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573427943] [2024-06-21 17:06:20,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:20,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:21,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:21,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 639 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:21,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:21,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:21,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:21,305 INFO L124 PetriNetUnfolderBase]: 219/441 cut-off events. [2024-06-21 17:06:21,306 INFO L125 PetriNetUnfolderBase]: For 9502/9503 co-relation queries the response was YES. [2024-06-21 17:06:21,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 441 events. 219/441 cut-off events. For 9502/9503 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2005 event pairs, 42 based on Foata normal form. 3/443 useless extension candidates. Maximal degree in co-relation 2251. Up to 355 conditions per place. [2024-06-21 17:06:21,313 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 76 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-21 17:06:21,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 875 flow [2024-06-21 17:06:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 17:06:21,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 17:06:21,315 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 639 flow. Second operand 8 states and 112 transitions. [2024-06-21 17:06:21,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 875 flow [2024-06-21 17:06:21,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 808 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:21,325 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 634 flow [2024-06-21 17:06:21,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-06-21 17:06:21,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-21 17:06:21,326 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 634 flow [2024-06-21 17:06:21,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:21,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:21,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:21,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 17:06:21,326 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 17:06:21,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:21,327 INFO L85 PathProgramCache]: Analyzing trace with hash 175936994, now seen corresponding path program 1 times [2024-06-21 17:06:21,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:21,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027408522] [2024-06-21 17:06:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:21,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:22,132 INFO 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 17:06:22,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:22,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027408522] [2024-06-21 17:06:22,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027408522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:22,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:22,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:22,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289542383] [2024-06-21 17:06:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:22,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:22,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:22,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:22,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 634 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:22,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:22,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:22,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:22,427 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2024-06-21 17:06:22,428 INFO L125 PetriNetUnfolderBase]: For 9972/9972 co-relation queries the response was YES. [2024-06-21 17:06:22,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 471 events. 243/471 cut-off events. For 9972/9972 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2126 event pairs, 47 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2400. Up to 381 conditions per place. [2024-06-21 17:06:22,431 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2024-06-21 17:06:22,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 928 flow [2024-06-21 17:06:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 17:06:22,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 17:06:22,432 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 634 flow. Second operand 10 states and 132 transitions. [2024-06-21 17:06:22,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 928 flow [2024-06-21 17:06:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 892 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:22,443 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 686 flow [2024-06-21 17:06:22,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2024-06-21 17:06:22,443 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-21 17:06:22,443 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 686 flow [2024-06-21 17:06:22,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:22,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:22,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 17:06:22,444 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 17:06:22,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1724370572, now seen corresponding path program 4 times [2024-06-21 17:06:22,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:22,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800355774] [2024-06-21 17:06:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:23,141 INFO 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 17:06:23,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:23,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800355774] [2024-06-21 17:06:23,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800355774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:23,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:23,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 17:06:23,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925439230] [2024-06-21 17:06:23,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:23,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 17:06:23,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 17:06:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 17:06:23,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 17:06:23,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:23,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:23,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 17:06:23,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:23,424 INFO L124 PetriNetUnfolderBase]: 222/448 cut-off events. [2024-06-21 17:06:23,424 INFO L125 PetriNetUnfolderBase]: For 10345/10348 co-relation queries the response was YES. [2024-06-21 17:06:23,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 448 events. 222/448 cut-off events. For 10345/10348 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2036 event pairs, 43 based on Foata normal form. 5/449 useless extension candidates. Maximal degree in co-relation 2308. Up to 351 conditions per place. [2024-06-21 17:06:23,427 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 75 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2024-06-21 17:06:23,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 912 flow [2024-06-21 17:06:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:06:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:06:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 17:06:23,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 17:06:23,428 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 686 flow. Second operand 8 states and 112 transitions. [2024-06-21 17:06:23,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 912 flow [2024-06-21 17:06:23,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 846 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:23,440 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 677 flow [2024-06-21 17:06:23,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=110, PETRI_TRANSITIONS=92} [2024-06-21 17:06:23,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-21 17:06:23,440 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 677 flow [2024-06-21 17:06:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:23,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:23,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 17:06:23,441 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 17:06:23,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:23,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1756987734, now seen corresponding path program 2 times [2024-06-21 17:06:23,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:23,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948703685] [2024-06-21 17:06:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:23,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:24,155 INFO 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 17:06:24,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:24,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948703685] [2024-06-21 17:06:24,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948703685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:24,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:24,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:24,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167816849] [2024-06-21 17:06:24,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:24,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:24,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:24,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:24,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:24,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:24,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 677 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:24,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:24,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:24,430 INFO L124 PetriNetUnfolderBase]: 246/478 cut-off events. [2024-06-21 17:06:24,430 INFO L125 PetriNetUnfolderBase]: For 10609/10609 co-relation queries the response was YES. [2024-06-21 17:06:24,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 478 events. 246/478 cut-off events. For 10609/10609 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2181 event pairs, 47 based on Foata normal form. 2/476 useless extension candidates. Maximal degree in co-relation 2485. Up to 302 conditions per place. [2024-06-21 17:06:24,433 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 66 selfloop transitions, 40 changer transitions 0/110 dead transitions. [2024-06-21 17:06:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 110 transitions, 1003 flow [2024-06-21 17:06:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 17:06:24,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 17:06:24,434 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 677 flow. Second operand 10 states and 137 transitions. [2024-06-21 17:06:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 110 transitions, 1003 flow [2024-06-21 17:06:24,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 110 transitions, 935 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:24,446 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 745 flow [2024-06-21 17:06:24,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=745, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-21 17:06:24,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-21 17:06:24,446 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 745 flow [2024-06-21 17:06:24,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:24,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:24,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 17:06:24,447 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 17:06:24,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:24,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1565003260, now seen corresponding path program 3 times [2024-06-21 17:06:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713004522] [2024-06-21 17:06:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713004522] [2024-06-21 17:06:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713004522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:25,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:25,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:25,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749354820] [2024-06-21 17:06:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:25,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:25,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:25,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 745 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:25,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:25,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:25,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:25,472 INFO L124 PetriNetUnfolderBase]: 252/488 cut-off events. [2024-06-21 17:06:25,472 INFO L125 PetriNetUnfolderBase]: For 11520/11520 co-relation queries the response was YES. [2024-06-21 17:06:25,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 488 events. 252/488 cut-off events. For 11520/11520 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2227 event pairs, 47 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2653. Up to 312 conditions per place. [2024-06-21 17:06:25,499 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 72 selfloop transitions, 38 changer transitions 0/114 dead transitions. [2024-06-21 17:06:25,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1105 flow [2024-06-21 17:06:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 17:06:25,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-21 17:06:25,501 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 745 flow. Second operand 10 states and 138 transitions. [2024-06-21 17:06:25,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1105 flow [2024-06-21 17:06:25,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 991 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:25,551 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 769 flow [2024-06-21 17:06:25,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=769, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-21 17:06:25,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-21 17:06:25,551 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 769 flow [2024-06-21 17:06:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:25,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:25,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:25,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 17:06:25,552 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 17:06:25,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2071009356, now seen corresponding path program 4 times [2024-06-21 17:06:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:25,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369184099] [2024-06-21 17:06:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:25,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:26,269 INFO 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 17:06:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:26,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369184099] [2024-06-21 17:06:26,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369184099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:26,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:26,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:26,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916689660] [2024-06-21 17:06:26,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:26,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:26,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:26,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:26,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:26,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 769 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:26,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:26,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:26,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:26,594 INFO L124 PetriNetUnfolderBase]: 258/498 cut-off events. [2024-06-21 17:06:26,594 INFO L125 PetriNetUnfolderBase]: For 12461/12461 co-relation queries the response was YES. [2024-06-21 17:06:26,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2828 conditions, 498 events. 258/498 cut-off events. For 12461/12461 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2279 event pairs, 37 based on Foata normal form. 2/496 useless extension candidates. Maximal degree in co-relation 2773. Up to 322 conditions per place. [2024-06-21 17:06:26,597 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 70 selfloop transitions, 42 changer transitions 0/116 dead transitions. [2024-06-21 17:06:26,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 116 transitions, 1135 flow [2024-06-21 17:06:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 17:06:26,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 17:06:26,598 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 769 flow. Second operand 10 states and 136 transitions. [2024-06-21 17:06:26,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 116 transitions, 1135 flow [2024-06-21 17:06:26,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 1019 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:26,613 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 805 flow [2024-06-21 17:06:26,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=805, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-21 17:06:26,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-21 17:06:26,614 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 805 flow [2024-06-21 17:06:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:26,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:26,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:26,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 17:06:26,615 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 17:06:26,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1335026350, now seen corresponding path program 5 times [2024-06-21 17:06:26,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:26,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228897005] [2024-06-21 17:06:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228897005] [2024-06-21 17:06:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228897005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:27,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:27,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:27,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094310463] [2024-06-21 17:06:27,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:27,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:27,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:27,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:27,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 805 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:27,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:27,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:27,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:27,685 INFO L124 PetriNetUnfolderBase]: 264/511 cut-off events. [2024-06-21 17:06:27,686 INFO L125 PetriNetUnfolderBase]: For 13490/13492 co-relation queries the response was YES. [2024-06-21 17:06:27,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 511 events. 264/511 cut-off events. For 13490/13492 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2350 event pairs, 51 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2912. Up to 441 conditions per place. [2024-06-21 17:06:27,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 94 selfloop transitions, 17 changer transitions 0/115 dead transitions. [2024-06-21 17:06:27,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 115 transitions, 1129 flow [2024-06-21 17:06:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 17:06:27,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 17:06:27,701 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 805 flow. Second operand 10 states and 126 transitions. [2024-06-21 17:06:27,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 115 transitions, 1129 flow [2024-06-21 17:06:27,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 115 transitions, 999 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:27,717 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 783 flow [2024-06-21 17:06:27,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=783, PETRI_PLACES=120, PETRI_TRANSITIONS=104} [2024-06-21 17:06:27,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-21 17:06:27,718 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 783 flow [2024-06-21 17:06:27,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:27,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:27,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:27,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 17:06:27,718 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 17:06:27,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2060533836, now seen corresponding path program 6 times [2024-06-21 17:06:27,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:27,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365623412] [2024-06-21 17:06:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:28,505 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 17:06:28,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:28,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365623412] [2024-06-21 17:06:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365623412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:28,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:28,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:28,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088406249] [2024-06-21 17:06:28,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:28,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:28,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:28,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:28,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:28,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 783 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:28,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:28,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:28,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:28,847 INFO L124 PetriNetUnfolderBase]: 262/508 cut-off events. [2024-06-21 17:06:28,848 INFO L125 PetriNetUnfolderBase]: For 13175/13177 co-relation queries the response was YES. [2024-06-21 17:06:28,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2878 conditions, 508 events. 262/508 cut-off events. For 13175/13177 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2335 event pairs, 51 based on Foata normal form. 1/508 useless extension candidates. Maximal degree in co-relation 2821. Up to 432 conditions per place. [2024-06-21 17:06:28,850 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-06-21 17:06:28,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 1087 flow [2024-06-21 17:06:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 17:06:28,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 17:06:28,853 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 783 flow. Second operand 11 states and 137 transitions. [2024-06-21 17:06:28,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 1087 flow [2024-06-21 17:06:28,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 1001 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:28,870 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 784 flow [2024-06-21 17:06:28,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=784, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-21 17:06:28,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-21 17:06:28,871 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 784 flow [2024-06-21 17:06:28,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:28,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:28,871 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 17:06:28,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 17:06:28,871 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 17:06:28,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash 838367549, now seen corresponding path program 1 times [2024-06-21 17:06:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:28,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599170274] [2024-06-21 17:06:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:28,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599170274] [2024-06-21 17:06:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599170274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:29,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588422366] [2024-06-21 17:06:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:29,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:29,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:29,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:29,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 784 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:29,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:29,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:29,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:29,820 INFO L124 PetriNetUnfolderBase]: 266/517 cut-off events. [2024-06-21 17:06:29,821 INFO L125 PetriNetUnfolderBase]: For 14346/14346 co-relation queries the response was YES. [2024-06-21 17:06:29,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2927 conditions, 517 events. 266/517 cut-off events. For 14346/14346 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2388 event pairs, 27 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2869. Up to 403 conditions per place. [2024-06-21 17:06:29,824 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-06-21 17:06:29,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1080 flow [2024-06-21 17:06:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 17:06:29,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 17:06:29,826 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 784 flow. Second operand 9 states and 118 transitions. [2024-06-21 17:06:29,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1080 flow [2024-06-21 17:06:29,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 1021 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:29,840 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 775 flow [2024-06-21 17:06:29,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2024-06-21 17:06:29,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-21 17:06:29,841 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 775 flow [2024-06-21 17:06:29,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:29,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:29,841 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 17:06:29,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 17:06:29,841 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 17:06:29,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:29,841 INFO L85 PathProgramCache]: Analyzing trace with hash 840245219, now seen corresponding path program 2 times [2024-06-21 17:06:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:29,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623500450] [2024-06-21 17:06:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:29,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:30,505 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 17:06:30,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623500450] [2024-06-21 17:06:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623500450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:30,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:30,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231324994] [2024-06-21 17:06:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:30,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:30,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:30,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:30,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:30,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:30,814 INFO L124 PetriNetUnfolderBase]: 270/525 cut-off events. [2024-06-21 17:06:30,814 INFO L125 PetriNetUnfolderBase]: For 14986/14986 co-relation queries the response was YES. [2024-06-21 17:06:30,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2977 conditions, 525 events. 270/525 cut-off events. For 14986/14986 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2439 event pairs, 48 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 2918. Up to 432 conditions per place. [2024-06-21 17:06:30,817 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 98 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2024-06-21 17:06:30,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 123 transitions, 1067 flow [2024-06-21 17:06:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 17:06:30,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 17:06:30,820 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 775 flow. Second operand 9 states and 119 transitions. [2024-06-21 17:06:30,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 123 transitions, 1067 flow [2024-06-21 17:06:30,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 1027 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:30,838 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 795 flow [2024-06-21 17:06:30,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=795, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-06-21 17:06:30,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-21 17:06:30,839 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 795 flow [2024-06-21 17:06:30,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:30,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:30,839 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 17:06:30,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 17:06:30,840 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 17:06:30,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash -17634349, now seen corresponding path program 3 times [2024-06-21 17:06:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:30,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223969677] [2024-06-21 17:06:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223969677] [2024-06-21 17:06:31,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223969677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:31,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:31,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944418189] [2024-06-21 17:06:31,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:31,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:31,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:31,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 795 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:31,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:31,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:31,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:31,915 INFO L124 PetriNetUnfolderBase]: 274/533 cut-off events. [2024-06-21 17:06:31,915 INFO L125 PetriNetUnfolderBase]: For 15958/15958 co-relation queries the response was YES. [2024-06-21 17:06:31,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3038 conditions, 533 events. 274/533 cut-off events. For 15958/15958 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2489 event pairs, 46 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 2978. Up to 424 conditions per place. [2024-06-21 17:06:31,918 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2024-06-21 17:06:31,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 1095 flow [2024-06-21 17:06:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:31,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 17:06:31,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-21 17:06:31,919 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 795 flow. Second operand 9 states and 121 transitions. [2024-06-21 17:06:31,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 1095 flow [2024-06-21 17:06:31,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 1045 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:31,937 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 807 flow [2024-06-21 17:06:31,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=807, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2024-06-21 17:06:31,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 17:06:31,939 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 807 flow [2024-06-21 17:06:31,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:31,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:31,940 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 17:06:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 17:06:31,940 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 17:06:31,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1047727525, now seen corresponding path program 1 times [2024-06-21 17:06:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890055518] [2024-06-21 17:06:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:31,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:32,576 INFO 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 17:06:32,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890055518] [2024-06-21 17:06:32,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890055518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:32,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:32,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:32,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146524788] [2024-06-21 17:06:32,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:32,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:32,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:32,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:32,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 109 transitions, 807 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:32,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:32,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:32,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:32,839 INFO L124 PetriNetUnfolderBase]: 272/530 cut-off events. [2024-06-21 17:06:32,839 INFO L125 PetriNetUnfolderBase]: For 15024/15024 co-relation queries the response was YES. [2024-06-21 17:06:32,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 530 events. 272/530 cut-off events. For 15024/15024 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2466 event pairs, 47 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 2928. Up to 437 conditions per place. [2024-06-21 17:06:32,843 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 24 changer transitions 0/126 dead transitions. [2024-06-21 17:06:32,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 1137 flow [2024-06-21 17:06:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 17:06:32,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:06:32,844 INFO L175 Difference]: Start difference. First operand has 127 places, 109 transitions, 807 flow. Second operand 10 states and 130 transitions. [2024-06-21 17:06:32,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 1137 flow [2024-06-21 17:06:32,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 1085 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:32,867 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 856 flow [2024-06-21 17:06:32,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=856, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2024-06-21 17:06:32,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-21 17:06:32,867 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 856 flow [2024-06-21 17:06:32,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:32,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:32,868 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 17:06:32,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 17:06:32,868 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 17:06:32,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash -375012047, now seen corresponding path program 4 times [2024-06-21 17:06:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:32,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910042333] [2024-06-21 17:06:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:32,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:33,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:33,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910042333] [2024-06-21 17:06:33,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910042333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:33,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:33,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:33,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941588168] [2024-06-21 17:06:33,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:33,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:33,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:33,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:33,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 856 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:33,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:33,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:33,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:33,841 INFO L124 PetriNetUnfolderBase]: 279/545 cut-off events. [2024-06-21 17:06:33,848 INFO L125 PetriNetUnfolderBase]: For 16453/16453 co-relation queries the response was YES. [2024-06-21 17:06:33,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 545 events. 279/545 cut-off events. For 16453/16453 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2570 event pairs, 43 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3014. Up to 462 conditions per place. [2024-06-21 17:06:33,853 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 107 selfloop transitions, 17 changer transitions 0/128 dead transitions. [2024-06-21 17:06:33,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 128 transitions, 1190 flow [2024-06-21 17:06:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 17:06:33,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 17:06:33,854 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 856 flow. Second operand 9 states and 118 transitions. [2024-06-21 17:06:33,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 128 transitions, 1190 flow [2024-06-21 17:06:33,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 1105 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:33,882 INFO L231 Difference]: Finished difference. Result has 132 places, 115 transitions, 868 flow [2024-06-21 17:06:33,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=868, PETRI_PLACES=132, PETRI_TRANSITIONS=115} [2024-06-21 17:06:33,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-21 17:06:33,883 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 115 transitions, 868 flow [2024-06-21 17:06:33,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:33,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:33,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:33,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 17:06:33,884 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 17:06:33,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash -380518577, now seen corresponding path program 5 times [2024-06-21 17:06:33,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:33,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167103244] [2024-06-21 17:06:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:33,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:34,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167103244] [2024-06-21 17:06:34,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167103244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:34,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:34,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:34,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165781426] [2024-06-21 17:06:34,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:34,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:34,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:34,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 115 transitions, 868 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:34,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:34,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:34,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:34,795 INFO L124 PetriNetUnfolderBase]: 283/551 cut-off events. [2024-06-21 17:06:34,795 INFO L125 PetriNetUnfolderBase]: For 17364/17364 co-relation queries the response was YES. [2024-06-21 17:06:34,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3134 conditions, 551 events. 283/551 cut-off events. For 17364/17364 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2604 event pairs, 45 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3070. Up to 470 conditions per place. [2024-06-21 17:06:34,799 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 108 selfloop transitions, 18 changer transitions 0/130 dead transitions. [2024-06-21 17:06:34,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1184 flow [2024-06-21 17:06:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 17:06:34,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 17:06:34,800 INFO L175 Difference]: Start difference. First operand has 132 places, 115 transitions, 868 flow. Second operand 9 states and 118 transitions. [2024-06-21 17:06:34,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1184 flow [2024-06-21 17:06:34,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1120 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:34,824 INFO L231 Difference]: Finished difference. Result has 135 places, 117 transitions, 874 flow [2024-06-21 17:06:34,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=874, PETRI_PLACES=135, PETRI_TRANSITIONS=117} [2024-06-21 17:06:34,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-21 17:06:34,825 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 117 transitions, 874 flow [2024-06-21 17:06:34,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:34,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:34,825 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 17:06:34,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 17:06:34,825 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 17:06:34,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash 951996475, now seen corresponding path program 6 times [2024-06-21 17:06:34,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:34,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814568861] [2024-06-21 17:06:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:34,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:35,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814568861] [2024-06-21 17:06:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814568861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:35,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:35,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011105009] [2024-06-21 17:06:35,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:35,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:35,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:35,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:35,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:35,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 117 transitions, 874 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:35,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:35,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:35,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:35,835 INFO L124 PetriNetUnfolderBase]: 287/559 cut-off events. [2024-06-21 17:06:35,836 INFO L125 PetriNetUnfolderBase]: For 18143/18143 co-relation queries the response was YES. [2024-06-21 17:06:35,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 559 events. 287/559 cut-off events. For 18143/18143 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2643 event pairs, 43 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3107. Up to 458 conditions per place. [2024-06-21 17:06:35,853 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 108 selfloop transitions, 20 changer transitions 0/132 dead transitions. [2024-06-21 17:06:35,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 1188 flow [2024-06-21 17:06:35,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 17:06:35,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 17:06:35,868 INFO L175 Difference]: Start difference. First operand has 135 places, 117 transitions, 874 flow. Second operand 9 states and 119 transitions. [2024-06-21 17:06:35,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 1188 flow [2024-06-21 17:06:35,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 1146 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:35,894 INFO L231 Difference]: Finished difference. Result has 139 places, 118 transitions, 898 flow [2024-06-21 17:06:35,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=898, PETRI_PLACES=139, PETRI_TRANSITIONS=118} [2024-06-21 17:06:35,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-21 17:06:35,895 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 118 transitions, 898 flow [2024-06-21 17:06:35,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:35,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:35,896 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 17:06:35,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 17:06:35,896 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 17:06:35,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:35,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1159080567, now seen corresponding path program 1 times [2024-06-21 17:06:35,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:35,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311745799] [2024-06-21 17:06:35,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:35,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:36,784 INFO 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 17:06:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311745799] [2024-06-21 17:06:36,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311745799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:36,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:36,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:36,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496241134] [2024-06-21 17:06:36,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:36,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:36,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:36,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:36,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:36,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 118 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:36,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:36,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:36,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:37,194 INFO L124 PetriNetUnfolderBase]: 307/605 cut-off events. [2024-06-21 17:06:37,195 INFO L125 PetriNetUnfolderBase]: For 27715/27715 co-relation queries the response was YES. [2024-06-21 17:06:37,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 605 events. 307/605 cut-off events. For 27715/27715 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2931 event pairs, 49 based on Foata normal form. 12/616 useless extension candidates. Maximal degree in co-relation 3366. Up to 456 conditions per place. [2024-06-21 17:06:37,198 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 107 selfloop transitions, 22 changer transitions 7/140 dead transitions. [2024-06-21 17:06:37,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 140 transitions, 1342 flow [2024-06-21 17:06:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 17:06:37,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 17:06:37,200 INFO L175 Difference]: Start difference. First operand has 139 places, 118 transitions, 898 flow. Second operand 11 states and 147 transitions. [2024-06-21 17:06:37,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 140 transitions, 1342 flow [2024-06-21 17:06:37,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 140 transitions, 1286 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:37,226 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 905 flow [2024-06-21 17:06:37,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=905, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2024-06-21 17:06:37,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 17:06:37,227 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 905 flow [2024-06-21 17:06:37,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:37,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:37,227 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 17:06:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 17:06:37,228 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 17:06:37,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -32575357, now seen corresponding path program 7 times [2024-06-21 17:06:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:37,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048035826] [2024-06-21 17:06:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048035826] [2024-06-21 17:06:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048035826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:37,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:37,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838326227] [2024-06-21 17:06:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:38,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:38,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 117 transitions, 905 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:38,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:38,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:38,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:38,248 INFO L124 PetriNetUnfolderBase]: 299/591 cut-off events. [2024-06-21 17:06:38,248 INFO L125 PetriNetUnfolderBase]: For 20881/20881 co-relation queries the response was YES. [2024-06-21 17:06:38,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 591 events. 299/591 cut-off events. For 20881/20881 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2881 event pairs, 46 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3351. Up to 484 conditions per place. [2024-06-21 17:06:38,252 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 28 changer transitions 0/132 dead transitions. [2024-06-21 17:06:38,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 132 transitions, 1268 flow [2024-06-21 17:06:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 17:06:38,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 17:06:38,265 INFO L175 Difference]: Start difference. First operand has 143 places, 117 transitions, 905 flow. Second operand 9 states and 118 transitions. [2024-06-21 17:06:38,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 132 transitions, 1268 flow [2024-06-21 17:06:38,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 132 transitions, 1216 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:38,292 INFO L231 Difference]: Finished difference. Result has 144 places, 120 transitions, 973 flow [2024-06-21 17:06:38,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=144, PETRI_TRANSITIONS=120} [2024-06-21 17:06:38,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-21 17:06:38,295 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 120 transitions, 973 flow [2024-06-21 17:06:38,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:38,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:38,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:38,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 17:06:38,297 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 17:06:38,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1109756661, now seen corresponding path program 8 times [2024-06-21 17:06:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755185197] [2024-06-21 17:06:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:39,034 INFO 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 17:06:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755185197] [2024-06-21 17:06:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755185197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:39,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:39,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:39,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224087582] [2024-06-21 17:06:39,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:39,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:39,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:39,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:39,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:39,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 120 transitions, 973 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:39,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:39,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:39,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:39,342 INFO L124 PetriNetUnfolderBase]: 306/604 cut-off events. [2024-06-21 17:06:39,343 INFO L125 PetriNetUnfolderBase]: For 22063/22063 co-relation queries the response was YES. [2024-06-21 17:06:39,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3554 conditions, 604 events. 306/604 cut-off events. For 22063/22063 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2965 event pairs, 46 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3485. Up to 496 conditions per place. [2024-06-21 17:06:39,347 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 28 changer transitions 0/135 dead transitions. [2024-06-21 17:06:39,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 135 transitions, 1333 flow [2024-06-21 17:06:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 17:06:39,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 17:06:39,373 INFO L175 Difference]: Start difference. First operand has 144 places, 120 transitions, 973 flow. Second operand 9 states and 120 transitions. [2024-06-21 17:06:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 135 transitions, 1333 flow [2024-06-21 17:06:39,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 135 transitions, 1235 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:39,404 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 1012 flow [2024-06-21 17:06:39,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1012, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2024-06-21 17:06:39,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-21 17:06:39,404 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 1012 flow [2024-06-21 17:06:39,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:39,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:39,405 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 17:06:39,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 17:06:39,405 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 17:06:39,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1477540127, now seen corresponding path program 9 times [2024-06-21 17:06:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959142733] [2024-06-21 17:06:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:40,094 INFO 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 17:06:40,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:40,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959142733] [2024-06-21 17:06:40,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959142733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:40,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:40,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066815181] [2024-06-21 17:06:40,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:40,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:40,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:40,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:40,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:40,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 1012 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:40,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:40,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:40,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:40,445 INFO L124 PetriNetUnfolderBase]: 310/612 cut-off events. [2024-06-21 17:06:40,445 INFO L125 PetriNetUnfolderBase]: For 23077/23077 co-relation queries the response was YES. [2024-06-21 17:06:40,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 612 events. 310/612 cut-off events. For 23077/23077 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3005 event pairs, 48 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 3546. Up to 504 conditions per place. [2024-06-21 17:06:40,449 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2024-06-21 17:06:40,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 137 transitions, 1344 flow [2024-06-21 17:06:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 17:06:40,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 17:06:40,451 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 1012 flow. Second operand 9 states and 119 transitions. [2024-06-21 17:06:40,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 137 transitions, 1344 flow [2024-06-21 17:06:40,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 137 transitions, 1244 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:40,487 INFO L231 Difference]: Finished difference. Result has 151 places, 126 transitions, 1014 flow [2024-06-21 17:06:40,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1014, PETRI_PLACES=151, PETRI_TRANSITIONS=126} [2024-06-21 17:06:40,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-21 17:06:40,488 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 126 transitions, 1014 flow [2024-06-21 17:06:40,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:40,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:40,488 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 17:06:40,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 17:06:40,488 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 17:06:40,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1477543847, now seen corresponding path program 10 times [2024-06-21 17:06:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:40,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510020433] [2024-06-21 17:06:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:40,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:41,120 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 17:06:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:41,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510020433] [2024-06-21 17:06:41,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510020433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:41,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:41,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:06:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055298112] [2024-06-21 17:06:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:41,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:06:41,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:06:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:06:41,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:41,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 126 transitions, 1014 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:41,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:41,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:41,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:41,410 INFO L124 PetriNetUnfolderBase]: 307/607 cut-off events. [2024-06-21 17:06:41,411 INFO L125 PetriNetUnfolderBase]: For 21543/21543 co-relation queries the response was YES. [2024-06-21 17:06:41,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 607 events. 307/607 cut-off events. For 21543/21543 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2993 event pairs, 45 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 3383. Up to 473 conditions per place. [2024-06-21 17:06:41,414 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 101 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-21 17:06:41,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 138 transitions, 1314 flow [2024-06-21 17:06:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 17:06:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 17:06:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 17:06:41,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 17:06:41,422 INFO L175 Difference]: Start difference. First operand has 151 places, 126 transitions, 1014 flow. Second operand 9 states and 120 transitions. [2024-06-21 17:06:41,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 138 transitions, 1314 flow [2024-06-21 17:06:41,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 138 transitions, 1242 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 17:06:41,455 INFO L231 Difference]: Finished difference. Result has 155 places, 126 transitions, 1012 flow [2024-06-21 17:06:41,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1012, PETRI_PLACES=155, PETRI_TRANSITIONS=126} [2024-06-21 17:06:41,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-21 17:06:41,456 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 126 transitions, 1012 flow [2024-06-21 17:06:41,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:41,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:41,456 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 17:06:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 17:06:41,457 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 17:06:41,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1708795163, now seen corresponding path program 2 times [2024-06-21 17:06:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:41,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487394472] [2024-06-21 17:06:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:41,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:42,160 INFO 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 17:06:42,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:42,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487394472] [2024-06-21 17:06:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487394472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:42,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136513582] [2024-06-21 17:06:42,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:42,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:42,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:42,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 126 transitions, 1012 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:42,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:42,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:42,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:42,506 INFO L124 PetriNetUnfolderBase]: 327/651 cut-off events. [2024-06-21 17:06:42,506 INFO L125 PetriNetUnfolderBase]: For 33139/33139 co-relation queries the response was YES. [2024-06-21 17:06:42,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3705 conditions, 651 events. 327/651 cut-off events. For 33139/33139 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3267 event pairs, 51 based on Foata normal form. 12/659 useless extension candidates. Maximal degree in co-relation 3632. Up to 417 conditions per place. [2024-06-21 17:06:42,510 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 40 changer transitions 7/148 dead transitions. [2024-06-21 17:06:42,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 148 transitions, 1540 flow [2024-06-21 17:06:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-21 17:06:42,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-21 17:06:42,511 INFO L175 Difference]: Start difference. First operand has 155 places, 126 transitions, 1012 flow. Second operand 11 states and 153 transitions. [2024-06-21 17:06:42,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 148 transitions, 1540 flow [2024-06-21 17:06:42,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 148 transitions, 1419 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:42,552 INFO L231 Difference]: Finished difference. Result has 158 places, 125 transitions, 996 flow [2024-06-21 17:06:42,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=996, PETRI_PLACES=158, PETRI_TRANSITIONS=125} [2024-06-21 17:06:42,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-21 17:06:42,553 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 125 transitions, 996 flow [2024-06-21 17:06:42,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:42,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:42,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 17:06:42,553 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 17:06:42,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -24940925, now seen corresponding path program 3 times [2024-06-21 17:06:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:42,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615864102] [2024-06-21 17:06:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:43,199 INFO 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 17:06:43,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:43,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615864102] [2024-06-21 17:06:43,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615864102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:43,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:43,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:43,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020237115] [2024-06-21 17:06:43,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:43,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:43,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 125 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:43,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:43,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:43,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:43,534 INFO L124 PetriNetUnfolderBase]: 335/677 cut-off events. [2024-06-21 17:06:43,534 INFO L125 PetriNetUnfolderBase]: For 35426/35426 co-relation queries the response was YES. [2024-06-21 17:06:43,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 677 events. 335/677 cut-off events. For 35426/35426 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3462 event pairs, 55 based on Foata normal form. 12/685 useless extension candidates. Maximal degree in co-relation 3789. Up to 441 conditions per place. [2024-06-21 17:06:43,538 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 96 selfloop transitions, 40 changer transitions 7/147 dead transitions. [2024-06-21 17:06:43,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 147 transitions, 1532 flow [2024-06-21 17:06:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-21 17:06:43,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-21 17:06:43,539 INFO L175 Difference]: Start difference. First operand has 158 places, 125 transitions, 996 flow. Second operand 11 states and 152 transitions. [2024-06-21 17:06:43,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 147 transitions, 1532 flow [2024-06-21 17:06:43,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 147 transitions, 1415 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 17:06:43,582 INFO L231 Difference]: Finished difference. Result has 159 places, 124 transitions, 988 flow [2024-06-21 17:06:43,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=988, PETRI_PLACES=159, PETRI_TRANSITIONS=124} [2024-06-21 17:06:43,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-21 17:06:43,583 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 124 transitions, 988 flow [2024-06-21 17:06:43,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:43,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:43,583 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 17:06:43,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 17:06:43,584 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 17:06:43,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 548347523, now seen corresponding path program 4 times [2024-06-21 17:06:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:43,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379692185] [2024-06-21 17:06:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:44,346 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 17:06:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:44,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379692185] [2024-06-21 17:06:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379692185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:44,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:44,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011906949] [2024-06-21 17:06:44,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:44,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:44,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:44,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 124 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:44,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:44,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:44,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:44,723 INFO L124 PetriNetUnfolderBase]: 363/744 cut-off events. [2024-06-21 17:06:44,723 INFO L125 PetriNetUnfolderBase]: For 40160/40162 co-relation queries the response was YES. [2024-06-21 17:06:44,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 744 events. 363/744 cut-off events. For 40160/40162 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3889 event pairs, 71 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4726. Up to 568 conditions per place. [2024-06-21 17:06:44,728 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-06-21 17:06:44,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 146 transitions, 1564 flow [2024-06-21 17:06:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:06:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:06:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 17:06:44,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 17:06:44,729 INFO L175 Difference]: Start difference. First operand has 159 places, 124 transitions, 988 flow. Second operand 12 states and 154 transitions. [2024-06-21 17:06:44,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 146 transitions, 1564 flow [2024-06-21 17:06:44,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 146 transitions, 1468 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:44,785 INFO L231 Difference]: Finished difference. Result has 163 places, 126 transitions, 1017 flow [2024-06-21 17:06:44,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1017, PETRI_PLACES=163, PETRI_TRANSITIONS=126} [2024-06-21 17:06:44,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-21 17:06:44,786 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 126 transitions, 1017 flow [2024-06-21 17:06:44,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:44,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:44,786 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 17:06:44,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 17:06:44,787 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 17:06:44,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash 223220453, now seen corresponding path program 5 times [2024-06-21 17:06:44,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:44,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565849865] [2024-06-21 17:06:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:44,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:45,463 INFO 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 17:06:45,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:45,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565849865] [2024-06-21 17:06:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565849865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:45,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:45,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17344138] [2024-06-21 17:06:45,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:45,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:45,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:45,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:45,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:45,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:45,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 126 transitions, 1017 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:45,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:45,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:45,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:45,883 INFO L124 PetriNetUnfolderBase]: 376/768 cut-off events. [2024-06-21 17:06:45,883 INFO L125 PetriNetUnfolderBase]: For 51410/51410 co-relation queries the response was YES. [2024-06-21 17:06:45,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4853 conditions, 768 events. 376/768 cut-off events. For 51410/51410 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4071 event pairs, 72 based on Foata normal form. 12/776 useless extension candidates. Maximal degree in co-relation 4777. Up to 532 conditions per place. [2024-06-21 17:06:45,888 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 90 selfloop transitions, 45 changer transitions 7/146 dead transitions. [2024-06-21 17:06:45,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 146 transitions, 1507 flow [2024-06-21 17:06:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 17:06:45,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-21 17:06:45,889 INFO L175 Difference]: Start difference. First operand has 163 places, 126 transitions, 1017 flow. Second operand 11 states and 151 transitions. [2024-06-21 17:06:45,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 146 transitions, 1507 flow [2024-06-21 17:06:45,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 146 transitions, 1428 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:45,948 INFO L231 Difference]: Finished difference. Result has 165 places, 125 transitions, 1061 flow [2024-06-21 17:06:45,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1061, PETRI_PLACES=165, PETRI_TRANSITIONS=125} [2024-06-21 17:06:45,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-21 17:06:45,958 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 125 transitions, 1061 flow [2024-06-21 17:06:45,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:45,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:45,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:45,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 17:06:45,964 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 17:06:45,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 536919683, now seen corresponding path program 6 times [2024-06-21 17:06:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436743203] [2024-06-21 17:06:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:46,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:46,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436743203] [2024-06-21 17:06:46,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436743203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:46,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:46,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759433452] [2024-06-21 17:06:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:46,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:46,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:46,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:46,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 125 transitions, 1061 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:46,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:46,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:46,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:47,130 INFO L124 PetriNetUnfolderBase]: 355/736 cut-off events. [2024-06-21 17:06:47,130 INFO L125 PetriNetUnfolderBase]: For 40950/40952 co-relation queries the response was YES. [2024-06-21 17:06:47,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 736 events. 355/736 cut-off events. For 40950/40952 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3915 event pairs, 67 based on Foata normal form. 12/747 useless extension candidates. Maximal degree in co-relation 4150. Up to 612 conditions per place. [2024-06-21 17:06:47,135 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 16 changer transitions 7/143 dead transitions. [2024-06-21 17:06:47,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 143 transitions, 1491 flow [2024-06-21 17:06:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 17:06:47,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 17:06:47,136 INFO L175 Difference]: Start difference. First operand has 165 places, 125 transitions, 1061 flow. Second operand 11 states and 141 transitions. [2024-06-21 17:06:47,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 143 transitions, 1491 flow [2024-06-21 17:06:47,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 143 transitions, 1379 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:47,179 INFO L231 Difference]: Finished difference. Result has 167 places, 124 transitions, 994 flow [2024-06-21 17:06:47,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=994, PETRI_PLACES=167, PETRI_TRANSITIONS=124} [2024-06-21 17:06:47,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-21 17:06:47,180 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 124 transitions, 994 flow [2024-06-21 17:06:47,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:47,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:47,180 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 17:06:47,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 17:06:47,181 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 17:06:47,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:47,181 INFO L85 PathProgramCache]: Analyzing trace with hash 547961573, now seen corresponding path program 7 times [2024-06-21 17:06:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:47,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668494474] [2024-06-21 17:06:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:47,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:47,987 INFO 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 17:06:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668494474] [2024-06-21 17:06:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668494474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786356122] [2024-06-21 17:06:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:48,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:48,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 124 transitions, 994 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:48,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:48,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:48,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:48,401 INFO L124 PetriNetUnfolderBase]: 340/709 cut-off events. [2024-06-21 17:06:48,402 INFO L125 PetriNetUnfolderBase]: For 26725/26727 co-relation queries the response was YES. [2024-06-21 17:06:48,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3906 conditions, 709 events. 340/709 cut-off events. For 26725/26727 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3750 event pairs, 64 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3828. Up to 595 conditions per place. [2024-06-21 17:06:48,406 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 21 changer transitions 3/140 dead transitions. [2024-06-21 17:06:48,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 140 transitions, 1372 flow [2024-06-21 17:06:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:06:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:06:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 17:06:48,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 17:06:48,407 INFO L175 Difference]: Start difference. First operand has 167 places, 124 transitions, 994 flow. Second operand 12 states and 148 transitions. [2024-06-21 17:06:48,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 140 transitions, 1372 flow [2024-06-21 17:06:48,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 140 transitions, 1326 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:48,451 INFO L231 Difference]: Finished difference. Result has 170 places, 124 transitions, 996 flow [2024-06-21 17:06:48,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=996, PETRI_PLACES=170, PETRI_TRANSITIONS=124} [2024-06-21 17:06:48,451 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-21 17:06:48,452 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 124 transitions, 996 flow [2024-06-21 17:06:48,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:48,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:48,452 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 17:06:48,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 17:06:48,452 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 17:06:48,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash -782491597, now seen corresponding path program 1 times [2024-06-21 17:06:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:48,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919665723] [2024-06-21 17:06:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:48,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:49,121 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 17:06:49,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:49,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919665723] [2024-06-21 17:06:49,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919665723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:49,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:49,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601941914] [2024-06-21 17:06:49,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:49,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:49,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:49,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:49,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 124 transitions, 996 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:49,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:49,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:49,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:49,494 INFO L124 PetriNetUnfolderBase]: 344/718 cut-off events. [2024-06-21 17:06:49,494 INFO L125 PetriNetUnfolderBase]: For 27305/27305 co-relation queries the response was YES. [2024-06-21 17:06:49,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 718 events. 344/718 cut-off events. For 27305/27305 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3811 event pairs, 43 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 3862. Up to 592 conditions per place. [2024-06-21 17:06:49,498 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 18 changer transitions 0/144 dead transitions. [2024-06-21 17:06:49,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 144 transitions, 1334 flow [2024-06-21 17:06:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 17:06:49,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 17:06:49,499 INFO L175 Difference]: Start difference. First operand has 170 places, 124 transitions, 996 flow. Second operand 10 states and 129 transitions. [2024-06-21 17:06:49,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 144 transitions, 1334 flow [2024-06-21 17:06:49,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 144 transitions, 1288 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 17:06:49,545 INFO L231 Difference]: Finished difference. Result has 169 places, 125 transitions, 1000 flow [2024-06-21 17:06:49,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1000, PETRI_PLACES=169, PETRI_TRANSITIONS=125} [2024-06-21 17:06:49,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-21 17:06:49,546 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 125 transitions, 1000 flow [2024-06-21 17:06:49,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:49,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:49,546 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 17:06:49,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 17:06:49,546 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 17:06:49,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1880368649, now seen corresponding path program 2 times [2024-06-21 17:06:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:49,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875550508] [2024-06-21 17:06:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:49,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:50,343 INFO 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 17:06:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875550508] [2024-06-21 17:06:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875550508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:50,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734162745] [2024-06-21 17:06:50,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:50,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:50,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:50,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 125 transitions, 1000 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:50,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:50,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:50,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:50,674 INFO L124 PetriNetUnfolderBase]: 355/739 cut-off events. [2024-06-21 17:06:50,675 INFO L125 PetriNetUnfolderBase]: For 30124/30124 co-relation queries the response was YES. [2024-06-21 17:06:50,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4141 conditions, 739 events. 355/739 cut-off events. For 30124/30124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3957 event pairs, 62 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4061. Up to 622 conditions per place. [2024-06-21 17:06:50,679 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 24 changer transitions 0/145 dead transitions. [2024-06-21 17:06:50,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 145 transitions, 1456 flow [2024-06-21 17:06:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 17:06:50,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 17:06:50,680 INFO L175 Difference]: Start difference. First operand has 169 places, 125 transitions, 1000 flow. Second operand 10 states and 133 transitions. [2024-06-21 17:06:50,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 145 transitions, 1456 flow [2024-06-21 17:06:50,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 145 transitions, 1416 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:50,730 INFO L231 Difference]: Finished difference. Result has 171 places, 127 transitions, 1034 flow [2024-06-21 17:06:50,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1034, PETRI_PLACES=171, PETRI_TRANSITIONS=127} [2024-06-21 17:06:50,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-21 17:06:50,731 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 127 transitions, 1034 flow [2024-06-21 17:06:50,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:50,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:50,731 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 17:06:50,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 17:06:50,731 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 17:06:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash 522613077, now seen corresponding path program 3 times [2024-06-21 17:06:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:50,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421215897] [2024-06-21 17:06:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:51,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:51,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421215897] [2024-06-21 17:06:51,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421215897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:51,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:51,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837745411] [2024-06-21 17:06:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:51,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:51,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:51,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:51,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 127 transitions, 1034 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:51,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:51,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:51,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:51,839 INFO L124 PetriNetUnfolderBase]: 352/734 cut-off events. [2024-06-21 17:06:51,840 INFO L125 PetriNetUnfolderBase]: For 28371/28371 co-relation queries the response was YES. [2024-06-21 17:06:51,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 734 events. 352/734 cut-off events. For 28371/28371 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3916 event pairs, 63 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 3962. Up to 634 conditions per place. [2024-06-21 17:06:51,844 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-21 17:06:51,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 143 transitions, 1356 flow [2024-06-21 17:06:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 17:06:51,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:06:51,845 INFO L175 Difference]: Start difference. First operand has 171 places, 127 transitions, 1034 flow. Second operand 10 states and 130 transitions. [2024-06-21 17:06:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 143 transitions, 1356 flow [2024-06-21 17:06:51,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 143 transitions, 1310 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 17:06:51,892 INFO L231 Difference]: Finished difference. Result has 175 places, 127 transitions, 1038 flow [2024-06-21 17:06:51,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1038, PETRI_PLACES=175, PETRI_TRANSITIONS=127} [2024-06-21 17:06:51,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-21 17:06:51,892 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 127 transitions, 1038 flow [2024-06-21 17:06:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:51,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:51,893 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 17:06:51,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 17:06:51,893 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 17:06:51,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash 517851477, now seen corresponding path program 4 times [2024-06-21 17:06:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429334594] [2024-06-21 17:06:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:52,774 INFO 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 17:06:52,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429334594] [2024-06-21 17:06:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429334594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:52,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:52,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:52,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994203857] [2024-06-21 17:06:52,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:52,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:52,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:52,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:52,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 127 transitions, 1038 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:52,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:52,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:52,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:53,091 INFO L124 PetriNetUnfolderBase]: 356/742 cut-off events. [2024-06-21 17:06:53,092 INFO L125 PetriNetUnfolderBase]: For 29086/29086 co-relation queries the response was YES. [2024-06-21 17:06:53,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4099 conditions, 742 events. 356/742 cut-off events. For 29086/29086 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3984 event pairs, 61 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 4016. Up to 604 conditions per place. [2024-06-21 17:06:53,097 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 24 changer transitions 0/146 dead transitions. [2024-06-21 17:06:53,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 146 transitions, 1382 flow [2024-06-21 17:06:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 17:06:53,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 17:06:53,098 INFO L175 Difference]: Start difference. First operand has 175 places, 127 transitions, 1038 flow. Second operand 10 states and 134 transitions. [2024-06-21 17:06:53,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 146 transitions, 1382 flow [2024-06-21 17:06:53,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 146 transitions, 1334 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:53,152 INFO L231 Difference]: Finished difference. Result has 176 places, 128 transitions, 1056 flow [2024-06-21 17:06:53,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1056, PETRI_PLACES=176, PETRI_TRANSITIONS=128} [2024-06-21 17:06:53,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-21 17:06:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 128 transitions, 1056 flow [2024-06-21 17:06:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:53,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:53,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:06:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 17:06:53,153 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 17:06:53,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1967815507, now seen corresponding path program 1 times [2024-06-21 17:06:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866632057] [2024-06-21 17:06:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:54,142 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 17:06:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866632057] [2024-06-21 17:06:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866632057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:06:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400440823] [2024-06-21 17:06:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:06:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:06:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:06:54,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:54,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 128 transitions, 1056 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:54,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:54,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:54,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:54,572 INFO L124 PetriNetUnfolderBase]: 359/749 cut-off events. [2024-06-21 17:06:54,572 INFO L125 PetriNetUnfolderBase]: For 28688/28688 co-relation queries the response was YES. [2024-06-21 17:06:54,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4191 conditions, 749 events. 359/749 cut-off events. For 28688/28688 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4029 event pairs, 64 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 4107. Up to 647 conditions per place. [2024-06-21 17:06:54,578 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-06-21 17:06:54,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 146 transitions, 1436 flow [2024-06-21 17:06:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:06:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:06:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 17:06:54,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 17:06:54,580 INFO L175 Difference]: Start difference. First operand has 176 places, 128 transitions, 1056 flow. Second operand 11 states and 141 transitions. [2024-06-21 17:06:54,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 146 transitions, 1436 flow [2024-06-21 17:06:54,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 146 transitions, 1380 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 17:06:54,641 INFO L231 Difference]: Finished difference. Result has 179 places, 130 transitions, 1113 flow [2024-06-21 17:06:54,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1113, PETRI_PLACES=179, PETRI_TRANSITIONS=130} [2024-06-21 17:06:54,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-21 17:06:54,642 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 130 transitions, 1113 flow [2024-06-21 17:06:54,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:54,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:54,642 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 17:06:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 17:06:54,643 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 17:06:54,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -178705801, now seen corresponding path program 5 times [2024-06-21 17:06:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025727359] [2024-06-21 17:06:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:55,508 INFO 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 17:06:55,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:55,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025727359] [2024-06-21 17:06:55,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025727359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:55,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:55,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327821420] [2024-06-21 17:06:55,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:55,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:55,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:55,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:55,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 130 transitions, 1113 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:55,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:55,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:55,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:55,897 INFO L124 PetriNetUnfolderBase]: 373/777 cut-off events. [2024-06-21 17:06:55,897 INFO L125 PetriNetUnfolderBase]: For 34690/34690 co-relation queries the response was YES. [2024-06-21 17:06:55,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 777 events. 373/777 cut-off events. For 34690/34690 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4218 event pairs, 65 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 4380. Up to 660 conditions per place. [2024-06-21 17:06:55,904 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 21 changer transitions 2/152 dead transitions. [2024-06-21 17:06:55,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 152 transitions, 1651 flow [2024-06-21 17:06:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 17:06:55,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 17:06:55,910 INFO L175 Difference]: Start difference. First operand has 179 places, 130 transitions, 1113 flow. Second operand 10 states and 134 transitions. [2024-06-21 17:06:55,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 152 transitions, 1651 flow [2024-06-21 17:06:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 152 transitions, 1554 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:55,983 INFO L231 Difference]: Finished difference. Result has 181 places, 134 transitions, 1144 flow [2024-06-21 17:06:55,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=181, PETRI_TRANSITIONS=134} [2024-06-21 17:06:55,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-21 17:06:55,983 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 134 transitions, 1144 flow [2024-06-21 17:06:55,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:55,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:55,984 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 17:06:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 17:06:55,984 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 17:06:55,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash -548117791, now seen corresponding path program 6 times [2024-06-21 17:06:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:55,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36866423] [2024-06-21 17:06:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:56,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36866423] [2024-06-21 17:06:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36866423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:56,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:56,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:56,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413521215] [2024-06-21 17:06:56,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:56,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:56,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:56,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:56,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:56,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:56,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 134 transitions, 1144 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:56,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:56,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:56,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:57,105 INFO L124 PetriNetUnfolderBase]: 366/768 cut-off events. [2024-06-21 17:06:57,105 INFO L125 PetriNetUnfolderBase]: For 32921/32921 co-relation queries the response was YES. [2024-06-21 17:06:57,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 768 events. 366/768 cut-off events. For 32921/32921 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4190 event pairs, 64 based on Foata normal form. 2/769 useless extension candidates. Maximal degree in co-relation 4216. Up to 668 conditions per place. [2024-06-21 17:06:57,110 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 20 changer transitions 0/148 dead transitions. [2024-06-21 17:06:57,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 148 transitions, 1470 flow [2024-06-21 17:06:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 17:06:57,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 17:06:57,111 INFO L175 Difference]: Start difference. First operand has 181 places, 134 transitions, 1144 flow. Second operand 10 states and 129 transitions. [2024-06-21 17:06:57,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 148 transitions, 1470 flow [2024-06-21 17:06:57,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 148 transitions, 1402 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-21 17:06:57,173 INFO L231 Difference]: Finished difference. Result has 188 places, 134 transitions, 1120 flow [2024-06-21 17:06:57,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1120, PETRI_PLACES=188, PETRI_TRANSITIONS=134} [2024-06-21 17:06:57,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-21 17:06:57,173 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 134 transitions, 1120 flow [2024-06-21 17:06:57,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:57,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:57,174 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 17:06:57,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 17:06:57,174 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 17:06:57,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1052861023, now seen corresponding path program 7 times [2024-06-21 17:06:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:57,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544361353] [2024-06-21 17:06:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:57,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:06:57,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:57,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544361353] [2024-06-21 17:06:57,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544361353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:57,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:57,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947698916] [2024-06-21 17:06:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:57,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:57,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:57,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:58,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:58,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 134 transitions, 1120 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:58,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:58,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:58,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:58,326 INFO L124 PetriNetUnfolderBase]: 371/781 cut-off events. [2024-06-21 17:06:58,326 INFO L125 PetriNetUnfolderBase]: For 33091/33091 co-relation queries the response was YES. [2024-06-21 17:06:58,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 781 events. 371/781 cut-off events. For 33091/33091 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4287 event pairs, 66 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4239. Up to 678 conditions per place. [2024-06-21 17:06:58,331 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-06-21 17:06:58,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 150 transitions, 1476 flow [2024-06-21 17:06:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 17:06:58,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 17:06:58,332 INFO L175 Difference]: Start difference. First operand has 188 places, 134 transitions, 1120 flow. Second operand 10 states and 129 transitions. [2024-06-21 17:06:58,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 150 transitions, 1476 flow [2024-06-21 17:06:58,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 150 transitions, 1431 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 17:06:58,390 INFO L231 Difference]: Finished difference. Result has 189 places, 136 transitions, 1149 flow [2024-06-21 17:06:58,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1149, PETRI_PLACES=189, PETRI_TRANSITIONS=136} [2024-06-21 17:06:58,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-21 17:06:58,391 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 136 transitions, 1149 flow [2024-06-21 17:06:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:58,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:58,391 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 17:06:58,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 17:06:58,392 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 17:06:58,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash -50782877, now seen corresponding path program 8 times [2024-06-21 17:06:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:58,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779432990] [2024-06-21 17:06:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:06:59,106 INFO 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 17:06:59,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:06:59,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779432990] [2024-06-21 17:06:59,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779432990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:06:59,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:06:59,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:06:59,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961758301] [2024-06-21 17:06:59,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:06:59,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:06:59,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:06:59,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:06:59,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:06:59,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:06:59,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 136 transitions, 1149 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:59,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:06:59,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:06:59,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:06:59,464 INFO L124 PetriNetUnfolderBase]: 382/802 cut-off events. [2024-06-21 17:06:59,465 INFO L125 PetriNetUnfolderBase]: For 37762/37762 co-relation queries the response was YES. [2024-06-21 17:06:59,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 802 events. 382/802 cut-off events. For 37762/37762 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4447 event pairs, 67 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 4502. Up to 676 conditions per place. [2024-06-21 17:06:59,470 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-06-21 17:06:59,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 154 transitions, 1647 flow [2024-06-21 17:06:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:06:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:06:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 17:06:59,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 17:06:59,471 INFO L175 Difference]: Start difference. First operand has 189 places, 136 transitions, 1149 flow. Second operand 10 states and 132 transitions. [2024-06-21 17:06:59,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 154 transitions, 1647 flow [2024-06-21 17:06:59,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 154 transitions, 1593 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 17:06:59,541 INFO L231 Difference]: Finished difference. Result has 192 places, 138 transitions, 1183 flow [2024-06-21 17:06:59,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=192, PETRI_TRANSITIONS=138} [2024-06-21 17:06:59,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-21 17:06:59,546 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 138 transitions, 1183 flow [2024-06-21 17:06:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:06:59,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:06:59,546 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 17:06:59,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 17:06:59,546 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 17:06:59,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:06:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash -824786893, now seen corresponding path program 9 times [2024-06-21 17:06:59,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:06:59,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222819438] [2024-06-21 17:06:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:06:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:06:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:00,198 INFO 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 17:07:00,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:00,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222819438] [2024-06-21 17:07:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222819438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:00,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:00,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355785005] [2024-06-21 17:07:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:00,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:00,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:00,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 138 transitions, 1183 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:00,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:00,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:00,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:00,530 INFO L124 PetriNetUnfolderBase]: 379/797 cut-off events. [2024-06-21 17:07:00,530 INFO L125 PetriNetUnfolderBase]: For 35060/35060 co-relation queries the response was YES. [2024-06-21 17:07:00,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4451 conditions, 797 events. 379/797 cut-off events. For 35060/35060 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4419 event pairs, 68 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 4361. Up to 694 conditions per place. [2024-06-21 17:07:00,536 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-21 17:07:00,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 152 transitions, 1517 flow [2024-06-21 17:07:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 17:07:00,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 17:07:00,537 INFO L175 Difference]: Start difference. First operand has 192 places, 138 transitions, 1183 flow. Second operand 10 states and 129 transitions. [2024-06-21 17:07:00,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 152 transitions, 1517 flow [2024-06-21 17:07:00,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 152 transitions, 1460 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 17:07:00,615 INFO L231 Difference]: Finished difference. Result has 196 places, 138 transitions, 1174 flow [2024-06-21 17:07:00,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1174, PETRI_PLACES=196, PETRI_TRANSITIONS=138} [2024-06-21 17:07:00,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-21 17:07:00,617 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 138 transitions, 1174 flow [2024-06-21 17:07:00,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:00,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:00,617 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 17:07:00,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 17:07:00,618 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 17:07:00,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1938755041, now seen corresponding path program 10 times [2024-06-21 17:07:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:00,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761538457] [2024-06-21 17:07:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761538457] [2024-06-21 17:07:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761538457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:01,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:01,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778034225] [2024-06-21 17:07:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:01,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:01,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:01,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:01,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 138 transitions, 1174 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:01,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:01,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:01,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:01,714 INFO L124 PetriNetUnfolderBase]: 383/805 cut-off events. [2024-06-21 17:07:01,714 INFO L125 PetriNetUnfolderBase]: For 35893/35893 co-relation queries the response was YES. [2024-06-21 17:07:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 805 events. 383/805 cut-off events. For 35893/35893 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4485 event pairs, 64 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 4402. Up to 640 conditions per place. [2024-06-21 17:07:01,720 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2024-06-21 17:07:01,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 155 transitions, 1538 flow [2024-06-21 17:07:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 17:07:01,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 17:07:01,723 INFO L175 Difference]: Start difference. First operand has 196 places, 138 transitions, 1174 flow. Second operand 10 states and 132 transitions. [2024-06-21 17:07:01,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 155 transitions, 1538 flow [2024-06-21 17:07:01,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 155 transitions, 1483 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:01,798 INFO L231 Difference]: Finished difference. Result has 197 places, 139 transitions, 1197 flow [2024-06-21 17:07:01,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1197, PETRI_PLACES=197, PETRI_TRANSITIONS=139} [2024-06-21 17:07:01,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-21 17:07:01,799 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 139 transitions, 1197 flow [2024-06-21 17:07:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:01,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:01,799 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 17:07:01,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 17:07:01,800 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 17:07:01,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1941338997, now seen corresponding path program 2 times [2024-06-21 17:07:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:01,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628940087] [2024-06-21 17:07:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:02,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:02,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628940087] [2024-06-21 17:07:02,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628940087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:02,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:02,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:02,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705958804] [2024-06-21 17:07:02,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:02,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:02,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:02,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:02,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 139 transitions, 1197 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:02,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:02,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:02,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:03,309 INFO L124 PetriNetUnfolderBase]: 386/812 cut-off events. [2024-06-21 17:07:03,310 INFO L125 PetriNetUnfolderBase]: For 35298/35298 co-relation queries the response was YES. [2024-06-21 17:07:03,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 812 events. 386/812 cut-off events. For 35298/35298 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4542 event pairs, 68 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 4499. Up to 698 conditions per place. [2024-06-21 17:07:03,315 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 25 changer transitions 3/158 dead transitions. [2024-06-21 17:07:03,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 158 transitions, 1646 flow [2024-06-21 17:07:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 17:07:03,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 17:07:03,316 INFO L175 Difference]: Start difference. First operand has 197 places, 139 transitions, 1197 flow. Second operand 12 states and 151 transitions. [2024-06-21 17:07:03,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 158 transitions, 1646 flow [2024-06-21 17:07:03,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 158 transitions, 1578 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 17:07:03,384 INFO L231 Difference]: Finished difference. Result has 202 places, 141 transitions, 1248 flow [2024-06-21 17:07:03,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1248, PETRI_PLACES=202, PETRI_TRANSITIONS=141} [2024-06-21 17:07:03,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-21 17:07:03,385 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 141 transitions, 1248 flow [2024-06-21 17:07:03,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:03,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:03,385 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 17:07:03,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 17:07:03,385 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 17:07:03,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:03,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1669704287, now seen corresponding path program 11 times [2024-06-21 17:07:03,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673604384] [2024-06-21 17:07:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:04,103 INFO 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 17:07:04,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:04,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673604384] [2024-06-21 17:07:04,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673604384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:04,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:04,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589736393] [2024-06-21 17:07:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:04,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:04,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:04,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:04,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:04,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 141 transitions, 1248 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:04,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:04,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:04,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:04,518 INFO L124 PetriNetUnfolderBase]: 384/800 cut-off events. [2024-06-21 17:07:04,518 INFO L125 PetriNetUnfolderBase]: For 37904/37904 co-relation queries the response was YES. [2024-06-21 17:07:04,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4535 conditions, 800 events. 384/800 cut-off events. For 37904/37904 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4427 event pairs, 65 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 4440. Up to 641 conditions per place. [2024-06-21 17:07:04,525 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 36 changer transitions 3/160 dead transitions. [2024-06-21 17:07:04,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 160 transitions, 1720 flow [2024-06-21 17:07:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 17:07:04,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 17:07:04,527 INFO L175 Difference]: Start difference. First operand has 202 places, 141 transitions, 1248 flow. Second operand 10 states and 135 transitions. [2024-06-21 17:07:04,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 160 transitions, 1720 flow [2024-06-21 17:07:04,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 160 transitions, 1611 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:04,620 INFO L231 Difference]: Finished difference. Result has 203 places, 145 transitions, 1300 flow [2024-06-21 17:07:04,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1300, PETRI_PLACES=203, PETRI_TRANSITIONS=145} [2024-06-21 17:07:04,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-21 17:07:04,621 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 145 transitions, 1300 flow [2024-06-21 17:07:04,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:04,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:04,621 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 17:07:04,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 17:07:04,621 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 17:07:04,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:04,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1669708937, now seen corresponding path program 12 times [2024-06-21 17:07:04,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:04,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696347760] [2024-06-21 17:07:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:04,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:05,297 INFO 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 17:07:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696347760] [2024-06-21 17:07:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696347760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:05,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:05,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:05,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761804870] [2024-06-21 17:07:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:05,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:05,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:05,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 145 transitions, 1300 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:05,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:05,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:05,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:05,665 INFO L124 PetriNetUnfolderBase]: 391/819 cut-off events. [2024-06-21 17:07:05,665 INFO L125 PetriNetUnfolderBase]: For 43358/43358 co-relation queries the response was YES. [2024-06-21 17:07:05,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4805 conditions, 819 events. 391/819 cut-off events. For 43358/43358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4597 event pairs, 66 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 4708. Up to 635 conditions per place. [2024-06-21 17:07:05,671 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 38 changer transitions 1/162 dead transitions. [2024-06-21 17:07:05,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 162 transitions, 1872 flow [2024-06-21 17:07:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 17:07:05,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 17:07:05,672 INFO L175 Difference]: Start difference. First operand has 203 places, 145 transitions, 1300 flow. Second operand 10 states and 136 transitions. [2024-06-21 17:07:05,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 162 transitions, 1872 flow [2024-06-21 17:07:05,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 162 transitions, 1756 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-21 17:07:05,774 INFO L231 Difference]: Finished difference. Result has 208 places, 147 transitions, 1316 flow [2024-06-21 17:07:05,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1316, PETRI_PLACES=208, PETRI_TRANSITIONS=147} [2024-06-21 17:07:05,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-21 17:07:05,775 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 147 transitions, 1316 flow [2024-06-21 17:07:05,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:05,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:05,775 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 17:07:05,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 17:07:05,775 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 17:07:05,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash -738134397, now seen corresponding path program 13 times [2024-06-21 17:07:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540266008] [2024-06-21 17:07:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:06,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540266008] [2024-06-21 17:07:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540266008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467707507] [2024-06-21 17:07:06,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:06,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:06,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 147 transitions, 1316 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:06,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:06,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:06,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:06,843 INFO L124 PetriNetUnfolderBase]: 388/814 cut-off events. [2024-06-21 17:07:06,843 INFO L125 PetriNetUnfolderBase]: For 39425/39425 co-relation queries the response was YES. [2024-06-21 17:07:06,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4601 conditions, 814 events. 388/814 cut-off events. For 39425/39425 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4583 event pairs, 67 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4503. Up to 653 conditions per place. [2024-06-21 17:07:06,849 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 37 changer transitions 1/160 dead transitions. [2024-06-21 17:07:06,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 160 transitions, 1700 flow [2024-06-21 17:07:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 17:07:06,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 17:07:06,850 INFO L175 Difference]: Start difference. First operand has 208 places, 147 transitions, 1316 flow. Second operand 10 states and 133 transitions. [2024-06-21 17:07:06,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 160 transitions, 1700 flow [2024-06-21 17:07:06,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 160 transitions, 1613 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-21 17:07:06,945 INFO L231 Difference]: Finished difference. Result has 212 places, 147 transitions, 1307 flow [2024-06-21 17:07:06,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1307, PETRI_PLACES=212, PETRI_TRANSITIONS=147} [2024-06-21 17:07:06,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-21 17:07:06,946 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 147 transitions, 1307 flow [2024-06-21 17:07:06,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:06,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:06,946 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 17:07:06,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 17:07:06,946 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 17:07:06,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 737401515, now seen corresponding path program 14 times [2024-06-21 17:07:06,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:06,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245755773] [2024-06-21 17:07:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:06,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:07,645 INFO 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 17:07:07,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245755773] [2024-06-21 17:07:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245755773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:07,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:07,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632731006] [2024-06-21 17:07:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:07,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:07,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:07,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:07,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 147 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:07,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:07,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:07,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:08,012 INFO L124 PetriNetUnfolderBase]: 399/835 cut-off events. [2024-06-21 17:07:08,013 INFO L125 PetriNetUnfolderBase]: For 44899/44899 co-relation queries the response was YES. [2024-06-21 17:07:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 835 events. 399/835 cut-off events. For 44899/44899 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4705 event pairs, 68 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 4794. Up to 657 conditions per place. [2024-06-21 17:07:08,018 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 120 selfloop transitions, 39 changer transitions 4/167 dead transitions. [2024-06-21 17:07:08,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 167 transitions, 1927 flow [2024-06-21 17:07:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 17:07:08,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 17:07:08,019 INFO L175 Difference]: Start difference. First operand has 212 places, 147 transitions, 1307 flow. Second operand 10 states and 136 transitions. [2024-06-21 17:07:08,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 167 transitions, 1927 flow [2024-06-21 17:07:08,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 167 transitions, 1830 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:08,116 INFO L231 Difference]: Finished difference. Result has 212 places, 149 transitions, 1352 flow [2024-06-21 17:07:08,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1352, PETRI_PLACES=212, PETRI_TRANSITIONS=149} [2024-06-21 17:07:08,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-21 17:07:08,117 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 149 transitions, 1352 flow [2024-06-21 17:07:08,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:08,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:08,117 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 17:07:08,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 17:07:08,117 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 17:07:08,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash -942414891, now seen corresponding path program 15 times [2024-06-21 17:07:08,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:08,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294054493] [2024-06-21 17:07:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:08,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:08,888 INFO 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 17:07:08,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294054493] [2024-06-21 17:07:08,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294054493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:08,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:08,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:08,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117841691] [2024-06-21 17:07:08,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:08,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:08,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:08,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 149 transitions, 1352 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:08,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:08,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:08,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:09,310 INFO L124 PetriNetUnfolderBase]: 342/708 cut-off events. [2024-06-21 17:07:09,310 INFO L125 PetriNetUnfolderBase]: For 37180/37180 co-relation queries the response was YES. [2024-06-21 17:07:09,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 708 events. 342/708 cut-off events. For 37180/37180 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3827 event pairs, 53 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 3865. Up to 551 conditions per place. [2024-06-21 17:07:09,316 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 38 changer transitions 0/161 dead transitions. [2024-06-21 17:07:09,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 161 transitions, 1698 flow [2024-06-21 17:07:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 17:07:09,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 17:07:09,317 INFO L175 Difference]: Start difference. First operand has 212 places, 149 transitions, 1352 flow. Second operand 10 states and 131 transitions. [2024-06-21 17:07:09,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 161 transitions, 1698 flow [2024-06-21 17:07:09,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 161 transitions, 1521 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-21 17:07:09,392 INFO L231 Difference]: Finished difference. Result has 214 places, 149 transitions, 1255 flow [2024-06-21 17:07:09,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1255, PETRI_PLACES=214, PETRI_TRANSITIONS=149} [2024-06-21 17:07:09,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-21 17:07:09,392 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 149 transitions, 1255 flow [2024-06-21 17:07:09,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:09,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:09,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:07:09,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 17:07:09,393 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 17:07:09,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1440781955, now seen corresponding path program 16 times [2024-06-21 17:07:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:09,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463386399] [2024-06-21 17:07:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:09,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:10,129 INFO 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 17:07:10,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463386399] [2024-06-21 17:07:10,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463386399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:10,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:10,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:10,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966566424] [2024-06-21 17:07:10,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:10,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:10,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:10,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 149 transitions, 1255 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:10,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:10,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:10,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:10,416 INFO L124 PetriNetUnfolderBase]: 346/716 cut-off events. [2024-06-21 17:07:10,417 INFO L125 PetriNetUnfolderBase]: For 36879/36879 co-relation queries the response was YES. [2024-06-21 17:07:10,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 716 events. 346/716 cut-off events. For 36879/36879 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3869 event pairs, 49 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 3722. Up to 476 conditions per place. [2024-06-21 17:07:10,422 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-21 17:07:10,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 165 transitions, 1781 flow [2024-06-21 17:07:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 17:07:10,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 17:07:10,423 INFO L175 Difference]: Start difference. First operand has 214 places, 149 transitions, 1255 flow. Second operand 10 states and 135 transitions. [2024-06-21 17:07:10,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 165 transitions, 1781 flow [2024-06-21 17:07:10,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 165 transitions, 1702 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:10,501 INFO L231 Difference]: Finished difference. Result has 215 places, 150 transitions, 1296 flow [2024-06-21 17:07:10,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1296, PETRI_PLACES=215, PETRI_TRANSITIONS=150} [2024-06-21 17:07:10,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-21 17:07:10,502 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 150 transitions, 1296 flow [2024-06-21 17:07:10,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:10,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:10,502 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 17:07:10,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 17:07:10,502 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 17:07:10,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:10,503 INFO L85 PathProgramCache]: Analyzing trace with hash -578606907, now seen corresponding path program 17 times [2024-06-21 17:07:10,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:10,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917969384] [2024-06-21 17:07:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:10,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:11,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917969384] [2024-06-21 17:07:11,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917969384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:11,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:11,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:11,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997479952] [2024-06-21 17:07:11,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:11,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:11,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:11,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:11,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:11,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 150 transitions, 1296 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:11,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:11,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:11,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:11,447 INFO L124 PetriNetUnfolderBase]: 351/727 cut-off events. [2024-06-21 17:07:11,447 INFO L125 PetriNetUnfolderBase]: For 38348/38348 co-relation queries the response was YES. [2024-06-21 17:07:11,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3955 conditions, 727 events. 351/727 cut-off events. For 38348/38348 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3964 event pairs, 53 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 3857. Up to 569 conditions per place. [2024-06-21 17:07:11,454 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 39 changer transitions 0/165 dead transitions. [2024-06-21 17:07:11,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 165 transitions, 1703 flow [2024-06-21 17:07:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 17:07:11,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 17:07:11,455 INFO L175 Difference]: Start difference. First operand has 215 places, 150 transitions, 1296 flow. Second operand 10 states and 132 transitions. [2024-06-21 17:07:11,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 165 transitions, 1703 flow [2024-06-21 17:07:11,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 165 transitions, 1553 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:11,538 INFO L231 Difference]: Finished difference. Result has 216 places, 153 transitions, 1290 flow [2024-06-21 17:07:11,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=216, PETRI_TRANSITIONS=153} [2024-06-21 17:07:11,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-21 17:07:11,539 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 153 transitions, 1290 flow [2024-06-21 17:07:11,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:11,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:11,540 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 17:07:11,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 17:07:11,540 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 17:07:11,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1581450389, now seen corresponding path program 18 times [2024-06-21 17:07:11,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:11,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753918379] [2024-06-21 17:07:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:11,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753918379] [2024-06-21 17:07:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753918379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:12,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:12,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491710873] [2024-06-21 17:07:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:12,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:12,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:12,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 153 transitions, 1290 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:12,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:12,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:12,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:12,514 INFO L124 PetriNetUnfolderBase]: 355/735 cut-off events. [2024-06-21 17:07:12,514 INFO L125 PetriNetUnfolderBase]: For 38896/38896 co-relation queries the response was YES. [2024-06-21 17:07:12,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 735 events. 355/735 cut-off events. For 38896/38896 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4026 event pairs, 55 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 3751. Up to 577 conditions per place. [2024-06-21 17:07:12,520 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 40 changer transitions 0/166 dead transitions. [2024-06-21 17:07:12,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 166 transitions, 1669 flow [2024-06-21 17:07:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 17:07:12,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:07:12,521 INFO L175 Difference]: Start difference. First operand has 216 places, 153 transitions, 1290 flow. Second operand 10 states and 130 transitions. [2024-06-21 17:07:12,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 166 transitions, 1669 flow [2024-06-21 17:07:12,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 166 transitions, 1545 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 17:07:12,607 INFO L231 Difference]: Finished difference. Result has 218 places, 154 transitions, 1275 flow [2024-06-21 17:07:12,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1275, PETRI_PLACES=218, PETRI_TRANSITIONS=154} [2024-06-21 17:07:12,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-21 17:07:12,607 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 154 transitions, 1275 flow [2024-06-21 17:07:12,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:12,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:12,608 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 17:07:12,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 17:07:12,608 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 17:07:12,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1581272759, now seen corresponding path program 19 times [2024-06-21 17:07:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494360579] [2024-06-21 17:07:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:13,320 INFO 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 17:07:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494360579] [2024-06-21 17:07:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494360579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:13,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:13,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:13,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595906133] [2024-06-21 17:07:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:13,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:13,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:13,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 154 transitions, 1275 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:13,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:13,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:13,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:13,627 INFO L124 PetriNetUnfolderBase]: 359/743 cut-off events. [2024-06-21 17:07:13,628 INFO L125 PetriNetUnfolderBase]: For 39977/39977 co-relation queries the response was YES. [2024-06-21 17:07:13,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 743 events. 359/743 cut-off events. For 39977/39977 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4073 event pairs, 53 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 3739. Up to 556 conditions per place. [2024-06-21 17:07:13,634 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2024-06-21 17:07:13,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 169 transitions, 1810 flow [2024-06-21 17:07:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 17:07:13,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 17:07:13,635 INFO L175 Difference]: Start difference. First operand has 218 places, 154 transitions, 1275 flow. Second operand 10 states and 133 transitions. [2024-06-21 17:07:13,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 169 transitions, 1810 flow [2024-06-21 17:07:13,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 169 transitions, 1699 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 17:07:13,728 INFO L231 Difference]: Finished difference. Result has 220 places, 155 transitions, 1279 flow [2024-06-21 17:07:13,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=220, PETRI_TRANSITIONS=155} [2024-06-21 17:07:13,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-21 17:07:13,729 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 155 transitions, 1279 flow [2024-06-21 17:07:13,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:13,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:13,729 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 17:07:13,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 17:07:13,730 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 17:07:13,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1678688205, now seen corresponding path program 20 times [2024-06-21 17:07:13,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:13,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147607475] [2024-06-21 17:07:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:13,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:14,382 INFO 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 17:07:14,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:14,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147607475] [2024-06-21 17:07:14,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147607475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:14,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:14,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 17:07:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913719779] [2024-06-21 17:07:14,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:14,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 17:07:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 17:07:14,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 17:07:14,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:14,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 155 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:14,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:14,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:14,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:14,729 INFO L124 PetriNetUnfolderBase]: 356/738 cut-off events. [2024-06-21 17:07:14,729 INFO L125 PetriNetUnfolderBase]: For 35563/35563 co-relation queries the response was YES. [2024-06-21 17:07:14,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 738 events. 356/738 cut-off events. For 35563/35563 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4061 event pairs, 54 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 3536. Up to 580 conditions per place. [2024-06-21 17:07:14,734 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 45 changer transitions 0/167 dead transitions. [2024-06-21 17:07:14,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 167 transitions, 1637 flow [2024-06-21 17:07:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 17:07:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 17:07:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 17:07:14,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:07:14,741 INFO L175 Difference]: Start difference. First operand has 220 places, 155 transitions, 1279 flow. Second operand 10 states and 130 transitions. [2024-06-21 17:07:14,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 167 transitions, 1637 flow [2024-06-21 17:07:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 167 transitions, 1453 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:14,823 INFO L231 Difference]: Finished difference. Result has 220 places, 155 transitions, 1189 flow [2024-06-21 17:07:14,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1189, PETRI_PLACES=220, PETRI_TRANSITIONS=155} [2024-06-21 17:07:14,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-21 17:07:14,824 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 155 transitions, 1189 flow [2024-06-21 17:07:14,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:14,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:14,824 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 17:07:14,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 17:07:14,824 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 17:07:14,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1817929363, now seen corresponding path program 3 times [2024-06-21 17:07:14,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:14,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226491328] [2024-06-21 17:07:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:14,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:15,651 INFO 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 17:07:15,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226491328] [2024-06-21 17:07:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226491328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:15,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:15,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:15,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818886367] [2024-06-21 17:07:15,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:15,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:15,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:15,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:15,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 155 transitions, 1189 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:15,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:15,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:15,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:16,012 INFO L124 PetriNetUnfolderBase]: 359/743 cut-off events. [2024-06-21 17:07:16,013 INFO L125 PetriNetUnfolderBase]: For 33561/33561 co-relation queries the response was YES. [2024-06-21 17:07:16,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 743 events. 359/743 cut-off events. For 33561/33561 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4122 event pairs, 59 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 3413. Up to 532 conditions per place. [2024-06-21 17:07:16,018 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 56 changer transitions 0/168 dead transitions. [2024-06-21 17:07:16,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 168 transitions, 1601 flow [2024-06-21 17:07:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 17:07:16,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 17:07:16,019 INFO L175 Difference]: Start difference. First operand has 220 places, 155 transitions, 1189 flow. Second operand 11 states and 146 transitions. [2024-06-21 17:07:16,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 168 transitions, 1601 flow [2024-06-21 17:07:16,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 168 transitions, 1438 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 17:07:16,100 INFO L231 Difference]: Finished difference. Result has 219 places, 157 transitions, 1205 flow [2024-06-21 17:07:16,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1205, PETRI_PLACES=219, PETRI_TRANSITIONS=157} [2024-06-21 17:07:16,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-21 17:07:16,100 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 157 transitions, 1205 flow [2024-06-21 17:07:16,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:16,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:16,101 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 17:07:16,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 17:07:16,101 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 17:07:16,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1670110381, now seen corresponding path program 4 times [2024-06-21 17:07:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:16,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569860059] [2024-06-21 17:07:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:16,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:16,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:16,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569860059] [2024-06-21 17:07:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569860059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919041344] [2024-06-21 17:07:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:16,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:17,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:17,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 157 transitions, 1205 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:17,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:17,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:17,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:17,269 INFO L124 PetriNetUnfolderBase]: 362/752 cut-off events. [2024-06-21 17:07:17,270 INFO L125 PetriNetUnfolderBase]: For 34844/34844 co-relation queries the response was YES. [2024-06-21 17:07:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3541 conditions, 752 events. 362/752 cut-off events. For 34844/34844 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4182 event pairs, 54 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 3447. Up to 572 conditions per place. [2024-06-21 17:07:17,275 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 50 changer transitions 0/171 dead transitions. [2024-06-21 17:07:17,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 171 transitions, 1633 flow [2024-06-21 17:07:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 17:07:17,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 17:07:17,276 INFO L175 Difference]: Start difference. First operand has 219 places, 157 transitions, 1205 flow. Second operand 11 states and 144 transitions. [2024-06-21 17:07:17,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 171 transitions, 1633 flow [2024-06-21 17:07:17,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 171 transitions, 1470 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:17,347 INFO L231 Difference]: Finished difference. Result has 221 places, 159 transitions, 1213 flow [2024-06-21 17:07:17,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1213, PETRI_PLACES=221, PETRI_TRANSITIONS=159} [2024-06-21 17:07:17,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-21 17:07:17,348 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 159 transitions, 1213 flow [2024-06-21 17:07:17,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:17,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:17,348 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 17:07:17,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 17:07:17,349 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 17:07:17,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:17,349 INFO L85 PathProgramCache]: Analyzing trace with hash -535368843, now seen corresponding path program 5 times [2024-06-21 17:07:17,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:17,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229836550] [2024-06-21 17:07:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:17,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229836550] [2024-06-21 17:07:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229836550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474230930] [2024-06-21 17:07:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:18,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:18,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:18,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 159 transitions, 1213 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:18,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:18,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:18,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:18,435 INFO L124 PetriNetUnfolderBase]: 365/760 cut-off events. [2024-06-21 17:07:18,436 INFO L125 PetriNetUnfolderBase]: For 35727/35729 co-relation queries the response was YES. [2024-06-21 17:07:18,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 760 events. 365/760 cut-off events. For 35727/35729 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4240 event pairs, 54 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3490. Up to 677 conditions per place. [2024-06-21 17:07:18,441 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 17 changer transitions 0/172 dead transitions. [2024-06-21 17:07:18,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 172 transitions, 1641 flow [2024-06-21 17:07:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 17:07:18,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 17:07:18,442 INFO L175 Difference]: Start difference. First operand has 221 places, 159 transitions, 1213 flow. Second operand 11 states and 134 transitions. [2024-06-21 17:07:18,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 172 transitions, 1641 flow [2024-06-21 17:07:18,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 172 transitions, 1486 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:18,525 INFO L231 Difference]: Finished difference. Result has 223 places, 161 transitions, 1167 flow [2024-06-21 17:07:18,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1167, PETRI_PLACES=223, PETRI_TRANSITIONS=161} [2024-06-21 17:07:18,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-21 17:07:18,526 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 161 transitions, 1167 flow [2024-06-21 17:07:18,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:18,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:18,527 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 17:07:18,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 17:07:18,529 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 17:07:18,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:18,529 INFO L85 PathProgramCache]: Analyzing trace with hash -193070253, now seen corresponding path program 6 times [2024-06-21 17:07:18,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:18,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320390049] [2024-06-21 17:07:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:18,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:19,594 INFO 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 17:07:19,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320390049] [2024-06-21 17:07:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320390049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:19,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:19,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:19,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945039401] [2024-06-21 17:07:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:19,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:19,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 161 transitions, 1167 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:19,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:19,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:19,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:20,055 INFO L124 PetriNetUnfolderBase]: 368/767 cut-off events. [2024-06-21 17:07:20,055 INFO L125 PetriNetUnfolderBase]: For 36782/36784 co-relation queries the response was YES. [2024-06-21 17:07:20,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 767 events. 368/767 cut-off events. For 36782/36784 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4289 event pairs, 54 based on Foata normal form. 1/767 useless extension candidates. Maximal degree in co-relation 3478. Up to 673 conditions per place. [2024-06-21 17:07:20,060 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2024-06-21 17:07:20,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 175 transitions, 1607 flow [2024-06-21 17:07:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 17:07:20,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 17:07:20,062 INFO L175 Difference]: Start difference. First operand has 223 places, 161 transitions, 1167 flow. Second operand 12 states and 147 transitions. [2024-06-21 17:07:20,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 175 transitions, 1607 flow [2024-06-21 17:07:20,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 175 transitions, 1514 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:20,131 INFO L231 Difference]: Finished difference. Result has 226 places, 163 transitions, 1197 flow [2024-06-21 17:07:20,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=226, PETRI_TRANSITIONS=163} [2024-06-21 17:07:20,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-21 17:07:20,132 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 163 transitions, 1197 flow [2024-06-21 17:07:20,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:20,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:20,133 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 17:07:20,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 17:07:20,133 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 17:07:20,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1177452277, now seen corresponding path program 7 times [2024-06-21 17:07:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555967104] [2024-06-21 17:07:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555967104] [2024-06-21 17:07:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555967104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:21,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:21,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386589928] [2024-06-21 17:07:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:21,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:21,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:21,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:21,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 163 transitions, 1197 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:21,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:21,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:21,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:21,523 INFO L124 PetriNetUnfolderBase]: 366/763 cut-off events. [2024-06-21 17:07:21,524 INFO L125 PetriNetUnfolderBase]: For 34337/34337 co-relation queries the response was YES. [2024-06-21 17:07:21,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 763 events. 366/763 cut-off events. For 34337/34337 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4279 event pairs, 54 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3341. Up to 579 conditions per place. [2024-06-21 17:07:21,528 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 43 changer transitions 0/177 dead transitions. [2024-06-21 17:07:21,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 177 transitions, 1649 flow [2024-06-21 17:07:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 17:07:21,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 17:07:21,530 INFO L175 Difference]: Start difference. First operand has 226 places, 163 transitions, 1197 flow. Second operand 11 states and 146 transitions. [2024-06-21 17:07:21,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 177 transitions, 1649 flow [2024-06-21 17:07:21,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 177 transitions, 1535 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:21,594 INFO L231 Difference]: Finished difference. Result has 227 places, 165 transitions, 1252 flow [2024-06-21 17:07:21,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1252, PETRI_PLACES=227, PETRI_TRANSITIONS=165} [2024-06-21 17:07:21,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-21 17:07:21,595 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 165 transitions, 1252 flow [2024-06-21 17:07:21,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:21,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:21,595 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 17:07:21,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 17:07:21,596 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 17:07:21,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1880464998, now seen corresponding path program 1 times [2024-06-21 17:07:21,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:21,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325418481] [2024-06-21 17:07:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:21,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:22,333 INFO 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 17:07:22,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:22,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325418481] [2024-06-21 17:07:22,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325418481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:22,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:22,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:22,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986441701] [2024-06-21 17:07:22,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:22,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:22,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:22,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:22,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:22,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 165 transitions, 1252 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:22,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:22,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:22,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:22,606 INFO L124 PetriNetUnfolderBase]: 370/773 cut-off events. [2024-06-21 17:07:22,607 INFO L125 PetriNetUnfolderBase]: For 37797/37797 co-relation queries the response was YES. [2024-06-21 17:07:22,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 773 events. 370/773 cut-off events. For 37797/37797 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4320 event pairs, 34 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 3374. Up to 625 conditions per place. [2024-06-21 17:07:22,613 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 19 changer transitions 0/187 dead transitions. [2024-06-21 17:07:22,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 187 transitions, 1682 flow [2024-06-21 17:07:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 17:07:22,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 17:07:22,614 INFO L175 Difference]: Start difference. First operand has 227 places, 165 transitions, 1252 flow. Second operand 11 states and 140 transitions. [2024-06-21 17:07:22,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 187 transitions, 1682 flow [2024-06-21 17:07:22,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 187 transitions, 1529 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:22,693 INFO L231 Difference]: Finished difference. Result has 229 places, 166 transitions, 1153 flow [2024-06-21 17:07:22,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1153, PETRI_PLACES=229, PETRI_TRANSITIONS=166} [2024-06-21 17:07:22,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-21 17:07:22,694 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 166 transitions, 1153 flow [2024-06-21 17:07:22,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:22,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:22,694 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 17:07:22,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 17:07:22,694 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 17:07:22,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash 375537638, now seen corresponding path program 2 times [2024-06-21 17:07:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572122666] [2024-06-21 17:07:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:23,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572122666] [2024-06-21 17:07:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572122666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:23,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:23,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:23,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182985888] [2024-06-21 17:07:23,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:23,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:23,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:23,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 166 transitions, 1153 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:23,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:23,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:23,791 INFO L124 PetriNetUnfolderBase]: 381/794 cut-off events. [2024-06-21 17:07:23,791 INFO L125 PetriNetUnfolderBase]: For 44342/44342 co-relation queries the response was YES. [2024-06-21 17:07:23,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3647 conditions, 794 events. 381/794 cut-off events. For 44342/44342 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4457 event pairs, 52 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 3548. Up to 660 conditions per place. [2024-06-21 17:07:23,796 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 26 changer transitions 0/187 dead transitions. [2024-06-21 17:07:23,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 187 transitions, 1753 flow [2024-06-21 17:07:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 17:07:23,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 17:07:23,807 INFO L175 Difference]: Start difference. First operand has 229 places, 166 transitions, 1153 flow. Second operand 11 states and 144 transitions. [2024-06-21 17:07:23,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 187 transitions, 1753 flow [2024-06-21 17:07:23,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 187 transitions, 1709 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:23,883 INFO L231 Difference]: Finished difference. Result has 231 places, 168 transitions, 1191 flow [2024-06-21 17:07:23,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1191, PETRI_PLACES=231, PETRI_TRANSITIONS=168} [2024-06-21 17:07:23,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-21 17:07:23,883 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 168 transitions, 1191 flow [2024-06-21 17:07:23,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:23,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:23,884 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 17:07:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 17:07:23,884 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 17:07:23,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1884999480, now seen corresponding path program 3 times [2024-06-21 17:07:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551087221] [2024-06-21 17:07:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:24,756 INFO 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 17:07:24,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551087221] [2024-06-21 17:07:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551087221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:24,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:24,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:24,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058197383] [2024-06-21 17:07:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:24,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:24,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:24,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:24,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:24,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:24,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 168 transitions, 1191 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:24,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:24,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:24,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:25,097 INFO L124 PetriNetUnfolderBase]: 378/789 cut-off events. [2024-06-21 17:07:25,097 INFO L125 PetriNetUnfolderBase]: For 39442/39442 co-relation queries the response was YES. [2024-06-21 17:07:25,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 789 events. 378/789 cut-off events. For 39442/39442 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4430 event pairs, 53 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 3386. Up to 672 conditions per place. [2024-06-21 17:07:25,103 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 25 changer transitions 0/185 dead transitions. [2024-06-21 17:07:25,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 185 transitions, 1599 flow [2024-06-21 17:07:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 17:07:25,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 17:07:25,104 INFO L175 Difference]: Start difference. First operand has 231 places, 168 transitions, 1191 flow. Second operand 11 states and 141 transitions. [2024-06-21 17:07:25,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 185 transitions, 1599 flow [2024-06-21 17:07:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 185 transitions, 1546 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:25,181 INFO L231 Difference]: Finished difference. Result has 235 places, 168 transitions, 1192 flow [2024-06-21 17:07:25,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1192, PETRI_PLACES=235, PETRI_TRANSITIONS=168} [2024-06-21 17:07:25,181 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-21 17:07:25,181 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 168 transitions, 1192 flow [2024-06-21 17:07:25,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:25,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:25,182 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 17:07:25,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 17:07:25,182 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 17:07:25,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1879285560, now seen corresponding path program 4 times [2024-06-21 17:07:25,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:25,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336335983] [2024-06-21 17:07:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:25,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:26,063 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 17:07:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336335983] [2024-06-21 17:07:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336335983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:26,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635322939] [2024-06-21 17:07:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:26,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:26,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:26,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 168 transitions, 1192 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:26,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:26,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:26,467 INFO L124 PetriNetUnfolderBase]: 382/797 cut-off events. [2024-06-21 17:07:26,467 INFO L125 PetriNetUnfolderBase]: For 40272/40272 co-relation queries the response was YES. [2024-06-21 17:07:26,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3537 conditions, 797 events. 382/797 cut-off events. For 40272/40272 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4492 event pairs, 51 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 3435. Up to 644 conditions per place. [2024-06-21 17:07:26,473 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2024-06-21 17:07:26,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 188 transitions, 1624 flow [2024-06-21 17:07:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 17:07:26,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 17:07:26,474 INFO L175 Difference]: Start difference. First operand has 235 places, 168 transitions, 1192 flow. Second operand 11 states and 145 transitions. [2024-06-21 17:07:26,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 188 transitions, 1624 flow [2024-06-21 17:07:26,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 188 transitions, 1572 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:26,559 INFO L231 Difference]: Finished difference. Result has 236 places, 169 transitions, 1214 flow [2024-06-21 17:07:26,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=236, PETRI_TRANSITIONS=169} [2024-06-21 17:07:26,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 17:07:26,560 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 169 transitions, 1214 flow [2024-06-21 17:07:26,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:26,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:26,560 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 17:07:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 17:07:26,560 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 17:07:26,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash -981536090, now seen corresponding path program 5 times [2024-06-21 17:07:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999851418] [2024-06-21 17:07:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:27,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999851418] [2024-06-21 17:07:27,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999851418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:27,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:27,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645930438] [2024-06-21 17:07:27,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:27,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:27,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:27,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:27,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:27,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 169 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:27,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:27,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:27,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:27,681 INFO L124 PetriNetUnfolderBase]: 386/805 cut-off events. [2024-06-21 17:07:27,682 INFO L125 PetriNetUnfolderBase]: For 41351/41351 co-relation queries the response was YES. [2024-06-21 17:07:27,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3612 conditions, 805 events. 386/805 cut-off events. For 41351/41351 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4554 event pairs, 51 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 3509. Up to 620 conditions per place. [2024-06-21 17:07:27,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 27 changer transitions 0/190 dead transitions. [2024-06-21 17:07:27,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 190 transitions, 1654 flow [2024-06-21 17:07:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 17:07:27,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 17:07:27,689 INFO L175 Difference]: Start difference. First operand has 236 places, 169 transitions, 1214 flow. Second operand 11 states and 147 transitions. [2024-06-21 17:07:27,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 190 transitions, 1654 flow [2024-06-21 17:07:27,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 190 transitions, 1590 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:27,777 INFO L231 Difference]: Finished difference. Result has 238 places, 170 transitions, 1226 flow [2024-06-21 17:07:27,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1226, PETRI_PLACES=238, PETRI_TRANSITIONS=170} [2024-06-21 17:07:27,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-21 17:07:27,778 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 170 transitions, 1226 flow [2024-06-21 17:07:27,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:27,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:27,779 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 17:07:27,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 17:07:27,779 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 17:07:27,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash -978647484, now seen corresponding path program 1 times [2024-06-21 17:07:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:27,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647464853] [2024-06-21 17:07:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:28,939 INFO 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 17:07:28,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647464853] [2024-06-21 17:07:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647464853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:28,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:28,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:07:28,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944614185] [2024-06-21 17:07:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:28,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:07:28,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:07:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:07:29,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:29,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 170 transitions, 1226 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:29,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:29,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:29,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:29,414 INFO L124 PetriNetUnfolderBase]: 398/837 cut-off events. [2024-06-21 17:07:29,415 INFO L125 PetriNetUnfolderBase]: For 62958/62958 co-relation queries the response was YES. [2024-06-21 17:07:29,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 837 events. 398/837 cut-off events. For 62958/62958 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4761 event pairs, 63 based on Foata normal form. 8/844 useless extension candidates. Maximal degree in co-relation 3721. Up to 687 conditions per place. [2024-06-21 17:07:29,419 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 23 changer transitions 9/191 dead transitions. [2024-06-21 17:07:29,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 191 transitions, 1728 flow [2024-06-21 17:07:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 17:07:29,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 17:07:29,420 INFO L175 Difference]: Start difference. First operand has 238 places, 170 transitions, 1226 flow. Second operand 12 states and 154 transitions. [2024-06-21 17:07:29,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 191 transitions, 1728 flow [2024-06-21 17:07:29,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 191 transitions, 1662 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:29,509 INFO L231 Difference]: Finished difference. Result has 241 places, 167 transitions, 1193 flow [2024-06-21 17:07:29,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1193, PETRI_PLACES=241, PETRI_TRANSITIONS=167} [2024-06-21 17:07:29,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-21 17:07:29,510 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 167 transitions, 1193 flow [2024-06-21 17:07:29,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:29,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:29,510 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 17:07:29,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 17:07:29,511 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 17:07:29,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 31711780, now seen corresponding path program 6 times [2024-06-21 17:07:29,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:29,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822557455] [2024-06-21 17:07:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:30,390 INFO 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 17:07:30,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822557455] [2024-06-21 17:07:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822557455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:30,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:30,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856953001] [2024-06-21 17:07:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:30,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:30,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:30,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:30,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 167 transitions, 1193 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:30,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:30,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:30,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:30,872 INFO L124 PetriNetUnfolderBase]: 392/823 cut-off events. [2024-06-21 17:07:30,873 INFO L125 PetriNetUnfolderBase]: For 50506/50506 co-relation queries the response was YES. [2024-06-21 17:07:30,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 823 events. 392/823 cut-off events. For 50506/50506 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4660 event pairs, 60 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 3749. Up to 672 conditions per place. [2024-06-21 17:07:30,879 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 23 changer transitions 0/187 dead transitions. [2024-06-21 17:07:30,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 187 transitions, 1811 flow [2024-06-21 17:07:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 17:07:30,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 17:07:30,880 INFO L175 Difference]: Start difference. First operand has 241 places, 167 transitions, 1193 flow. Second operand 11 states and 145 transitions. [2024-06-21 17:07:30,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 187 transitions, 1811 flow [2024-06-21 17:07:30,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 187 transitions, 1753 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:30,992 INFO L231 Difference]: Finished difference. Result has 238 places, 169 transitions, 1227 flow [2024-06-21 17:07:30,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1227, PETRI_PLACES=238, PETRI_TRANSITIONS=169} [2024-06-21 17:07:30,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-21 17:07:30,993 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 169 transitions, 1227 flow [2024-06-21 17:07:30,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:30,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:30,994 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 17:07:30,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 17:07:30,994 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 17:07:30,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:30,994 INFO L85 PathProgramCache]: Analyzing trace with hash -967939674, now seen corresponding path program 7 times [2024-06-21 17:07:30,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:30,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55578577] [2024-06-21 17:07:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:30,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:31,778 INFO 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 17:07:31,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55578577] [2024-06-21 17:07:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55578577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:31,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:31,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:31,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467207150] [2024-06-21 17:07:31,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:31,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:31,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:31,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:31,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 169 transitions, 1227 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:31,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:31,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:31,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:32,220 INFO L124 PetriNetUnfolderBase]: 389/818 cut-off events. [2024-06-21 17:07:32,220 INFO L125 PetriNetUnfolderBase]: For 42439/42439 co-relation queries the response was YES. [2024-06-21 17:07:32,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 818 events. 389/818 cut-off events. For 42439/42439 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4632 event pairs, 61 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 3544. Up to 692 conditions per place. [2024-06-21 17:07:32,226 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2024-06-21 17:07:32,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 185 transitions, 1631 flow [2024-06-21 17:07:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 17:07:32,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 17:07:32,227 INFO L175 Difference]: Start difference. First operand has 238 places, 169 transitions, 1227 flow. Second operand 11 states and 141 transitions. [2024-06-21 17:07:32,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 185 transitions, 1631 flow [2024-06-21 17:07:32,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 185 transitions, 1570 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:32,324 INFO L231 Difference]: Finished difference. Result has 242 places, 169 transitions, 1214 flow [2024-06-21 17:07:32,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=242, PETRI_TRANSITIONS=169} [2024-06-21 17:07:32,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-21 17:07:32,329 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 169 transitions, 1214 flow [2024-06-21 17:07:32,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:32,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:32,330 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 17:07:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 17:07:32,330 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 17:07:32,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1850825608, now seen corresponding path program 8 times [2024-06-21 17:07:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:32,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877265688] [2024-06-21 17:07:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:33,057 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 17:07:33,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:33,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877265688] [2024-06-21 17:07:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877265688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110386923] [2024-06-21 17:07:33,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:33,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:33,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 169 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:33,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:33,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:33,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:33,438 INFO L124 PetriNetUnfolderBase]: 400/839 cut-off events. [2024-06-21 17:07:33,438 INFO L125 PetriNetUnfolderBase]: For 50609/50609 co-relation queries the response was YES. [2024-06-21 17:07:33,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 839 events. 400/839 cut-off events. For 50609/50609 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4763 event pairs, 62 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 3826. Up to 616 conditions per place. [2024-06-21 17:07:33,446 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 25 changer transitions 0/190 dead transitions. [2024-06-21 17:07:33,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 190 transitions, 1844 flow [2024-06-21 17:07:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 17:07:33,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 17:07:33,447 INFO L175 Difference]: Start difference. First operand has 242 places, 169 transitions, 1214 flow. Second operand 11 states and 146 transitions. [2024-06-21 17:07:33,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 190 transitions, 1844 flow [2024-06-21 17:07:33,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 190 transitions, 1798 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:33,593 INFO L231 Difference]: Finished difference. Result has 243 places, 171 transitions, 1264 flow [2024-06-21 17:07:33,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1264, PETRI_PLACES=243, PETRI_TRANSITIONS=171} [2024-06-21 17:07:33,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-21 17:07:33,594 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 171 transitions, 1264 flow [2024-06-21 17:07:33,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:33,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:33,595 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 17:07:33,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 17:07:33,595 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 17:07:33,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:33,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1568761670, now seen corresponding path program 9 times [2024-06-21 17:07:33,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:33,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634433912] [2024-06-21 17:07:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:33,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:34,390 INFO 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 17:07:34,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634433912] [2024-06-21 17:07:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634433912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:34,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:34,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17890324] [2024-06-21 17:07:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:34,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:34,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:34,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:34,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:34,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 171 transitions, 1264 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:34,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:34,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:34,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:34,818 INFO L124 PetriNetUnfolderBase]: 404/846 cut-off events. [2024-06-21 17:07:34,819 INFO L125 PetriNetUnfolderBase]: For 52063/52065 co-relation queries the response was YES. [2024-06-21 17:07:34,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 846 events. 404/846 cut-off events. For 52063/52065 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4817 event pairs, 70 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 3921. Up to 686 conditions per place. [2024-06-21 17:07:34,825 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 33 changer transitions 0/187 dead transitions. [2024-06-21 17:07:34,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 187 transitions, 1688 flow [2024-06-21 17:07:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 17:07:34,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 17:07:34,826 INFO L175 Difference]: Start difference. First operand has 243 places, 171 transitions, 1264 flow. Second operand 11 states and 142 transitions. [2024-06-21 17:07:34,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 187 transitions, 1688 flow [2024-06-21 17:07:34,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 187 transitions, 1631 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:34,961 INFO L231 Difference]: Finished difference. Result has 247 places, 172 transitions, 1301 flow [2024-06-21 17:07:34,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1301, PETRI_PLACES=247, PETRI_TRANSITIONS=172} [2024-06-21 17:07:34,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-21 17:07:34,961 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 172 transitions, 1301 flow [2024-06-21 17:07:34,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:34,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:34,962 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 17:07:34,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 17:07:34,962 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 17:07:34,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1574268200, now seen corresponding path program 10 times [2024-06-21 17:07:34,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:34,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222423844] [2024-06-21 17:07:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:35,751 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 17:07:35,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:35,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222423844] [2024-06-21 17:07:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222423844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:35,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:35,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:35,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698024385] [2024-06-21 17:07:35,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:35,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:35,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:35,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 172 transitions, 1301 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:35,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:35,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:35,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:36,132 INFO L124 PetriNetUnfolderBase]: 408/855 cut-off events. [2024-06-21 17:07:36,133 INFO L125 PetriNetUnfolderBase]: For 53113/53113 co-relation queries the response was YES. [2024-06-21 17:07:36,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 855 events. 408/855 cut-off events. For 53113/53113 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4871 event pairs, 68 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 3985. Up to 690 conditions per place. [2024-06-21 17:07:36,140 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 163 selfloop transitions, 24 changer transitions 0/191 dead transitions. [2024-06-21 17:07:36,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 191 transitions, 1915 flow [2024-06-21 17:07:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 17:07:36,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 17:07:36,141 INFO L175 Difference]: Start difference. First operand has 247 places, 172 transitions, 1301 flow. Second operand 11 states and 145 transitions. [2024-06-21 17:07:36,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 191 transitions, 1915 flow [2024-06-21 17:07:36,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 191 transitions, 1837 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:36,271 INFO L231 Difference]: Finished difference. Result has 249 places, 173 transitions, 1295 flow [2024-06-21 17:07:36,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1295, PETRI_PLACES=249, PETRI_TRANSITIONS=173} [2024-06-21 17:07:36,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-21 17:07:36,272 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 173 transitions, 1295 flow [2024-06-21 17:07:36,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:36,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:36,272 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 17:07:36,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 17:07:36,272 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 17:07:36,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1227965754, now seen corresponding path program 11 times [2024-06-21 17:07:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774667779] [2024-06-21 17:07:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:36,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774667779] [2024-06-21 17:07:36,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774667779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:36,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:36,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701209748] [2024-06-21 17:07:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:36,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:37,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:37,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 173 transitions, 1295 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:37,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:37,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:37,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:37,285 INFO L124 PetriNetUnfolderBase]: 405/850 cut-off events. [2024-06-21 17:07:37,285 INFO L125 PetriNetUnfolderBase]: For 46531/46531 co-relation queries the response was YES. [2024-06-21 17:07:37,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3870 conditions, 850 events. 405/850 cut-off events. For 46531/46531 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4855 event pairs, 69 based on Foata normal form. 2/851 useless extension candidates. Maximal degree in co-relation 3760. Up to 724 conditions per place. [2024-06-21 17:07:37,293 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2024-06-21 17:07:37,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 189 transitions, 1707 flow [2024-06-21 17:07:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 17:07:37,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 17:07:37,294 INFO L175 Difference]: Start difference. First operand has 249 places, 173 transitions, 1295 flow. Second operand 11 states and 141 transitions. [2024-06-21 17:07:37,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 189 transitions, 1707 flow [2024-06-21 17:07:37,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 189 transitions, 1614 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:37,406 INFO L231 Difference]: Finished difference. Result has 250 places, 173 transitions, 1252 flow [2024-06-21 17:07:37,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1252, PETRI_PLACES=250, PETRI_TRANSITIONS=173} [2024-06-21 17:07:37,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-21 17:07:37,406 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 173 transitions, 1252 flow [2024-06-21 17:07:37,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:37,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:37,407 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 17:07:37,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 17:07:37,407 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 17:07:37,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:37,407 INFO L85 PathProgramCache]: Analyzing trace with hash 467650116, now seen corresponding path program 2 times [2024-06-21 17:07:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:37,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124379818] [2024-06-21 17:07:37,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:37,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:38,228 INFO 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 17:07:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124379818] [2024-06-21 17:07:38,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124379818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:38,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:38,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:07:38,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406917229] [2024-06-21 17:07:38,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:38,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:07:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:07:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:07:38,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:38,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 173 transitions, 1252 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:38,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:38,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:38,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:38,742 INFO L124 PetriNetUnfolderBase]: 435/915 cut-off events. [2024-06-21 17:07:38,743 INFO L125 PetriNetUnfolderBase]: For 90943/90945 co-relation queries the response was YES. [2024-06-21 17:07:38,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4927 conditions, 915 events. 435/915 cut-off events. For 90943/90945 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5289 event pairs, 83 based on Foata normal form. 6/920 useless extension candidates. Maximal degree in co-relation 4817. Up to 683 conditions per place. [2024-06-21 17:07:38,751 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 36 changer transitions 6/195 dead transitions. [2024-06-21 17:07:38,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 195 transitions, 1976 flow [2024-06-21 17:07:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 17:07:38,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 17:07:38,752 INFO L175 Difference]: Start difference. First operand has 250 places, 173 transitions, 1252 flow. Second operand 12 states and 159 transitions. [2024-06-21 17:07:38,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 195 transitions, 1976 flow [2024-06-21 17:07:38,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 195 transitions, 1924 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:38,986 INFO L231 Difference]: Finished difference. Result has 252 places, 171 transitions, 1264 flow [2024-06-21 17:07:38,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1264, PETRI_PLACES=252, PETRI_TRANSITIONS=171} [2024-06-21 17:07:38,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-21 17:07:38,987 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 171 transitions, 1264 flow [2024-06-21 17:07:38,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:38,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:38,987 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 17:07:38,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 17:07:38,987 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 17:07:38,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash 467323686, now seen corresponding path program 3 times [2024-06-21 17:07:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:38,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208780498] [2024-06-21 17:07:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:38,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:39,915 INFO 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 17:07:39,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208780498] [2024-06-21 17:07:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208780498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:39,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:39,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:07:39,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770628440] [2024-06-21 17:07:39,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:39,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:07:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:39,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:07:39,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:07:40,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:40,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 171 transitions, 1264 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:40,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:40,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:40,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:40,368 INFO L124 PetriNetUnfolderBase]: 411/864 cut-off events. [2024-06-21 17:07:40,368 INFO L125 PetriNetUnfolderBase]: For 72547/72547 co-relation queries the response was YES. [2024-06-21 17:07:40,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 864 events. 411/864 cut-off events. For 72547/72547 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4956 event pairs, 73 based on Foata normal form. 8/871 useless extension candidates. Maximal degree in co-relation 3867. Up to 718 conditions per place. [2024-06-21 17:07:40,375 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 19 changer transitions 13/190 dead transitions. [2024-06-21 17:07:40,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 190 transitions, 1754 flow [2024-06-21 17:07:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 17:07:40,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 17:07:40,376 INFO L175 Difference]: Start difference. First operand has 252 places, 171 transitions, 1264 flow. Second operand 12 states and 152 transitions. [2024-06-21 17:07:40,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 190 transitions, 1754 flow [2024-06-21 17:07:40,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 190 transitions, 1680 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:40,492 INFO L231 Difference]: Finished difference. Result has 251 places, 166 transitions, 1199 flow [2024-06-21 17:07:40,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1199, PETRI_PLACES=251, PETRI_TRANSITIONS=166} [2024-06-21 17:07:40,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 17:07:40,492 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 166 transitions, 1199 flow [2024-06-21 17:07:40,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:40,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:40,493 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 17:07:40,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 17:07:40,493 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 17:07:40,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1535358502, now seen corresponding path program 12 times [2024-06-21 17:07:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596160405] [2024-06-21 17:07:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:41,232 INFO 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 17:07:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:41,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596160405] [2024-06-21 17:07:41,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596160405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:41,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:41,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:41,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625405908] [2024-06-21 17:07:41,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:41,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:41,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:41,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:41,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:41,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:41,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 166 transitions, 1199 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:41,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:41,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:41,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:41,637 INFO L124 PetriNetUnfolderBase]: 396/827 cut-off events. [2024-06-21 17:07:41,637 INFO L125 PetriNetUnfolderBase]: For 47410/47410 co-relation queries the response was YES. [2024-06-21 17:07:41,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 827 events. 396/827 cut-off events. For 47410/47410 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4693 event pairs, 72 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 3628. Up to 640 conditions per place. [2024-06-21 17:07:41,645 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 41 changer transitions 0/181 dead transitions. [2024-06-21 17:07:41,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 181 transitions, 1609 flow [2024-06-21 17:07:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 17:07:41,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 17:07:41,658 INFO L175 Difference]: Start difference. First operand has 251 places, 166 transitions, 1199 flow. Second operand 11 states and 146 transitions. [2024-06-21 17:07:41,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 181 transitions, 1609 flow [2024-06-21 17:07:41,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 181 transitions, 1549 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:41,777 INFO L231 Difference]: Finished difference. Result has 243 places, 167 transitions, 1247 flow [2024-06-21 17:07:41,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1247, PETRI_PLACES=243, PETRI_TRANSITIONS=167} [2024-06-21 17:07:41,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-21 17:07:41,778 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 167 transitions, 1247 flow [2024-06-21 17:07:41,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:41,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:41,778 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 17:07:41,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 17:07:41,778 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 17:07:41,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:41,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1234609852, now seen corresponding path program 13 times [2024-06-21 17:07:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:41,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48235126] [2024-06-21 17:07:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:41,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48235126] [2024-06-21 17:07:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48235126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:42,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080490653] [2024-06-21 17:07:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:42,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:42,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:42,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 167 transitions, 1247 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:42,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:42,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:42,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:42,825 INFO L124 PetriNetUnfolderBase]: 400/835 cut-off events. [2024-06-21 17:07:42,825 INFO L125 PetriNetUnfolderBase]: For 44476/44476 co-relation queries the response was YES. [2024-06-21 17:07:42,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 835 events. 400/835 cut-off events. For 44476/44476 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4747 event pairs, 74 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 3665. Up to 648 conditions per place. [2024-06-21 17:07:42,833 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 42 changer transitions 0/182 dead transitions. [2024-06-21 17:07:42,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 182 transitions, 1659 flow [2024-06-21 17:07:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 17:07:42,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:07:42,834 INFO L175 Difference]: Start difference. First operand has 243 places, 167 transitions, 1247 flow. Second operand 11 states and 143 transitions. [2024-06-21 17:07:42,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 182 transitions, 1659 flow [2024-06-21 17:07:42,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 182 transitions, 1563 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:42,954 INFO L231 Difference]: Finished difference. Result has 245 places, 168 transitions, 1261 flow [2024-06-21 17:07:42,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1261, PETRI_PLACES=245, PETRI_TRANSITIONS=168} [2024-06-21 17:07:42,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-21 17:07:42,955 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 168 transitions, 1261 flow [2024-06-21 17:07:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:42,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:42,955 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 17:07:42,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 17:07:42,955 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 17:07:42,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:42,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1997723844, now seen corresponding path program 14 times [2024-06-21 17:07:42,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:42,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287384327] [2024-06-21 17:07:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:42,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:43,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:43,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287384327] [2024-06-21 17:07:43,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287384327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:43,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:43,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994882142] [2024-06-21 17:07:43,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:43,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:43,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:43,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:43,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:43,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 168 transitions, 1261 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:43,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:43,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:43,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:44,030 INFO L124 PetriNetUnfolderBase]: 411/856 cut-off events. [2024-06-21 17:07:44,031 INFO L125 PetriNetUnfolderBase]: For 53293/53293 co-relation queries the response was YES. [2024-06-21 17:07:44,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 856 events. 411/856 cut-off events. For 53293/53293 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4898 event pairs, 77 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 3975. Up to 616 conditions per place. [2024-06-21 17:07:44,037 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 45 changer transitions 0/186 dead transitions. [2024-06-21 17:07:44,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 186 transitions, 1883 flow [2024-06-21 17:07:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 17:07:44,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 17:07:44,038 INFO L175 Difference]: Start difference. First operand has 245 places, 168 transitions, 1261 flow. Second operand 11 states and 147 transitions. [2024-06-21 17:07:44,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 186 transitions, 1883 flow [2024-06-21 17:07:44,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 186 transitions, 1783 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:44,167 INFO L231 Difference]: Finished difference. Result has 247 places, 170 transitions, 1301 flow [2024-06-21 17:07:44,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1301, PETRI_PLACES=247, PETRI_TRANSITIONS=170} [2024-06-21 17:07:44,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-21 17:07:44,174 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 170 transitions, 1301 flow [2024-06-21 17:07:44,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:44,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:44,174 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 17:07:44,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 17:07:44,174 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 17:07:44,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:44,175 INFO L85 PathProgramCache]: Analyzing trace with hash -499725816, now seen corresponding path program 15 times [2024-06-21 17:07:44,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:44,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049873589] [2024-06-21 17:07:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:44,951 INFO 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 17:07:44,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:44,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049873589] [2024-06-21 17:07:44,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049873589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:44,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:44,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708575485] [2024-06-21 17:07:44,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:44,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:45,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:45,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 170 transitions, 1301 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:45,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:45,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:45,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:45,325 INFO L124 PetriNetUnfolderBase]: 408/851 cut-off events. [2024-06-21 17:07:45,325 INFO L125 PetriNetUnfolderBase]: For 46774/46774 co-relation queries the response was YES. [2024-06-21 17:07:45,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3882 conditions, 851 events. 408/851 cut-off events. For 46774/46774 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4863 event pairs, 78 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 3773. Up to 664 conditions per place. [2024-06-21 17:07:45,331 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 47 changer transitions 0/184 dead transitions. [2024-06-21 17:07:45,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 184 transitions, 1697 flow [2024-06-21 17:07:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 17:07:45,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:07:45,332 INFO L175 Difference]: Start difference. First operand has 247 places, 170 transitions, 1301 flow. Second operand 11 states and 143 transitions. [2024-06-21 17:07:45,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 184 transitions, 1697 flow [2024-06-21 17:07:45,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 184 transitions, 1605 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 17:07:45,454 INFO L231 Difference]: Finished difference. Result has 251 places, 170 transitions, 1307 flow [2024-06-21 17:07:45,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=251, PETRI_TRANSITIONS=170} [2024-06-21 17:07:45,454 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 17:07:45,454 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 170 transitions, 1307 flow [2024-06-21 17:07:45,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:45,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:45,455 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 17:07:45,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 17:07:45,455 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 17:07:45,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:45,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1908041260, now seen corresponding path program 16 times [2024-06-21 17:07:45,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:45,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553088652] [2024-06-21 17:07:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:45,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:46,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:46,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553088652] [2024-06-21 17:07:46,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553088652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:46,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:46,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:46,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169134614] [2024-06-21 17:07:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:46,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:46,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 170 transitions, 1307 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:46,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:46,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:46,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:46,637 INFO L124 PetriNetUnfolderBase]: 412/859 cut-off events. [2024-06-21 17:07:46,637 INFO L125 PetriNetUnfolderBase]: For 47615/47615 co-relation queries the response was YES. [2024-06-21 17:07:46,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 859 events. 412/859 cut-off events. For 47615/47615 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4908 event pairs, 80 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 3841. Up to 672 conditions per place. [2024-06-21 17:07:46,643 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-21 17:07:46,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 185 transitions, 1729 flow [2024-06-21 17:07:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 17:07:46,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 17:07:46,644 INFO L175 Difference]: Start difference. First operand has 251 places, 170 transitions, 1307 flow. Second operand 11 states and 147 transitions. [2024-06-21 17:07:46,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 185 transitions, 1729 flow [2024-06-21 17:07:46,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 185 transitions, 1625 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 17:07:46,762 INFO L231 Difference]: Finished difference. Result has 252 places, 171 transitions, 1311 flow [2024-06-21 17:07:46,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1311, PETRI_PLACES=252, PETRI_TRANSITIONS=171} [2024-06-21 17:07:46,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-21 17:07:46,763 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 171 transitions, 1311 flow [2024-06-21 17:07:46,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:46,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:46,763 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 17:07:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 17:07:46,763 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 17:07:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1740860920, now seen corresponding path program 17 times [2024-06-21 17:07:46,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:46,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707207473] [2024-06-21 17:07:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:47,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:47,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707207473] [2024-06-21 17:07:47,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707207473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:47,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:47,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:47,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662984532] [2024-06-21 17:07:47,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:47,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:47,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:47,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:47,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:47,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:47,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 171 transitions, 1311 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:47,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:47,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:47,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:47,941 INFO L124 PetriNetUnfolderBase]: 416/867 cut-off events. [2024-06-21 17:07:47,941 INFO L125 PetriNetUnfolderBase]: For 48978/48978 co-relation queries the response was YES. [2024-06-21 17:07:47,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 867 events. 416/867 cut-off events. For 48978/48978 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4989 event pairs, 82 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 3897. Up to 680 conditions per place. [2024-06-21 17:07:47,948 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 40 changer transitions 0/186 dead transitions. [2024-06-21 17:07:47,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 186 transitions, 1737 flow [2024-06-21 17:07:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 17:07:47,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 17:07:47,952 INFO L175 Difference]: Start difference. First operand has 252 places, 171 transitions, 1311 flow. Second operand 11 states and 147 transitions. [2024-06-21 17:07:47,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 186 transitions, 1737 flow [2024-06-21 17:07:48,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 186 transitions, 1639 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:48,080 INFO L231 Difference]: Finished difference. Result has 254 places, 172 transitions, 1325 flow [2024-06-21 17:07:48,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1325, PETRI_PLACES=254, PETRI_TRANSITIONS=172} [2024-06-21 17:07:48,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-21 17:07:48,081 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 172 transitions, 1325 flow [2024-06-21 17:07:48,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:48,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:48,081 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 17:07:48,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 17:07:48,082 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 17:07:48,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash -900104222, now seen corresponding path program 18 times [2024-06-21 17:07:48,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:48,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519935979] [2024-06-21 17:07:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:48,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:48,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:48,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519935979] [2024-06-21 17:07:48,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519935979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:48,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:48,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:48,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851823974] [2024-06-21 17:07:48,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:48,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:48,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:48,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 172 transitions, 1325 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:48,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:48,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:48,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:49,114 INFO L124 PetriNetUnfolderBase]: 420/875 cut-off events. [2024-06-21 17:07:49,114 INFO L125 PetriNetUnfolderBase]: For 50173/50173 co-relation queries the response was YES. [2024-06-21 17:07:49,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 875 events. 420/875 cut-off events. For 50173/50173 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5043 event pairs, 82 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 3947. Up to 652 conditions per place. [2024-06-21 17:07:49,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 41 changer transitions 0/188 dead transitions. [2024-06-21 17:07:49,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 188 transitions, 1759 flow [2024-06-21 17:07:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 17:07:49,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-21 17:07:49,122 INFO L175 Difference]: Start difference. First operand has 254 places, 172 transitions, 1325 flow. Second operand 11 states and 150 transitions. [2024-06-21 17:07:49,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 188 transitions, 1759 flow [2024-06-21 17:07:49,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 188 transitions, 1657 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:49,238 INFO L231 Difference]: Finished difference. Result has 256 places, 173 transitions, 1339 flow [2024-06-21 17:07:49,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1339, PETRI_PLACES=256, PETRI_TRANSITIONS=173} [2024-06-21 17:07:49,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-21 17:07:49,238 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 173 transitions, 1339 flow [2024-06-21 17:07:49,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:49,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:49,239 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 17:07:49,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 17:07:49,239 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 17:07:49,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:49,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1856815852, now seen corresponding path program 19 times [2024-06-21 17:07:49,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:49,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459100446] [2024-06-21 17:07:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:50,012 INFO 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 17:07:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:50,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459100446] [2024-06-21 17:07:50,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459100446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:50,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:50,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297043696] [2024-06-21 17:07:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:50,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:50,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:50,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:50,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 173 transitions, 1339 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:50,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:50,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:50,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:50,453 INFO L124 PetriNetUnfolderBase]: 424/883 cut-off events. [2024-06-21 17:07:50,453 INFO L125 PetriNetUnfolderBase]: For 51414/51414 co-relation queries the response was YES. [2024-06-21 17:07:50,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 883 events. 424/883 cut-off events. For 51414/51414 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5096 event pairs, 86 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 4003. Up to 696 conditions per place. [2024-06-21 17:07:50,461 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 42 changer transitions 0/188 dead transitions. [2024-06-21 17:07:50,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 188 transitions, 1773 flow [2024-06-21 17:07:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 17:07:50,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 17:07:50,462 INFO L175 Difference]: Start difference. First operand has 256 places, 173 transitions, 1339 flow. Second operand 11 states and 144 transitions. [2024-06-21 17:07:50,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 188 transitions, 1773 flow [2024-06-21 17:07:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 188 transitions, 1667 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:50,581 INFO L231 Difference]: Finished difference. Result has 258 places, 174 transitions, 1353 flow [2024-06-21 17:07:50,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1353, PETRI_PLACES=258, PETRI_TRANSITIONS=174} [2024-06-21 17:07:50,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-21 17:07:50,581 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 174 transitions, 1353 flow [2024-06-21 17:07:50,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:50,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:50,581 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 17:07:50,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 17:07:50,582 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 17:07:50,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1856671702, now seen corresponding path program 20 times [2024-06-21 17:07:50,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:50,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484875623] [2024-06-21 17:07:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:51,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484875623] [2024-06-21 17:07:51,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484875623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:51,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:51,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:51,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843960271] [2024-06-21 17:07:51,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:51,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:51,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:51,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:51,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 174 transitions, 1353 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:51,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:51,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:51,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:51,776 INFO L124 PetriNetUnfolderBase]: 428/891 cut-off events. [2024-06-21 17:07:51,776 INFO L125 PetriNetUnfolderBase]: For 52697/52697 co-relation queries the response was YES. [2024-06-21 17:07:51,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 891 events. 428/891 cut-off events. For 52697/52697 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5155 event pairs, 86 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 4047. Up to 682 conditions per place. [2024-06-21 17:07:51,783 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 43 changer transitions 0/190 dead transitions. [2024-06-21 17:07:51,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 190 transitions, 1795 flow [2024-06-21 17:07:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 17:07:51,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 17:07:51,785 INFO L175 Difference]: Start difference. First operand has 258 places, 174 transitions, 1353 flow. Second operand 11 states and 147 transitions. [2024-06-21 17:07:51,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 190 transitions, 1795 flow [2024-06-21 17:07:51,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 190 transitions, 1685 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:51,916 INFO L231 Difference]: Finished difference. Result has 260 places, 175 transitions, 1367 flow [2024-06-21 17:07:51,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1367, PETRI_PLACES=260, PETRI_TRANSITIONS=175} [2024-06-21 17:07:51,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-21 17:07:51,917 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 175 transitions, 1367 flow [2024-06-21 17:07:51,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:51,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:51,917 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 17:07:51,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 17:07:51,917 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 17:07:51,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:51,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1714568632, now seen corresponding path program 21 times [2024-06-21 17:07:51,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:51,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302249361] [2024-06-21 17:07:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:51,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:52,676 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 17:07:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:52,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302249361] [2024-06-21 17:07:52,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302249361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:52,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:52,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 17:07:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440822748] [2024-06-21 17:07:52,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:52,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 17:07:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 17:07:52,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 17:07:52,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:52,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 175 transitions, 1367 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:52,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:52,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:52,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:53,082 INFO L124 PetriNetUnfolderBase]: 425/886 cut-off events. [2024-06-21 17:07:53,082 INFO L125 PetriNetUnfolderBase]: For 44736/44736 co-relation queries the response was YES. [2024-06-21 17:07:53,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 886 events. 425/886 cut-off events. For 44736/44736 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5127 event pairs, 83 based on Foata normal form. 2/884 useless extension candidates. Maximal degree in co-relation 3791. Up to 533 conditions per place. [2024-06-21 17:07:53,091 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 51 changer transitions 0/191 dead transitions. [2024-06-21 17:07:53,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 191 transitions, 1781 flow [2024-06-21 17:07:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 17:07:53,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 17:07:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 17:07:53,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 17:07:53,092 INFO L175 Difference]: Start difference. First operand has 260 places, 175 transitions, 1367 flow. Second operand 11 states and 148 transitions. [2024-06-21 17:07:53,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 191 transitions, 1781 flow [2024-06-21 17:07:53,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 191 transitions, 1667 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 17:07:53,242 INFO L231 Difference]: Finished difference. Result has 262 places, 175 transitions, 1359 flow [2024-06-21 17:07:53,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1359, PETRI_PLACES=262, PETRI_TRANSITIONS=175} [2024-06-21 17:07:53,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-21 17:07:53,244 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 175 transitions, 1359 flow [2024-06-21 17:07:53,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:53,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:53,245 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 17:07:53,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 17:07:53,245 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 17:07:53,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1141416234, now seen corresponding path program 4 times [2024-06-21 17:07:53,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:53,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848011608] [2024-06-21 17:07:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:53,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:54,143 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 17:07:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848011608] [2024-06-21 17:07:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848011608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:07:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983871694] [2024-06-21 17:07:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:07:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:07:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:07:54,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:54,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 175 transitions, 1359 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:54,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:54,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:54,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:54,560 INFO L124 PetriNetUnfolderBase]: 437/916 cut-off events. [2024-06-21 17:07:54,560 INFO L125 PetriNetUnfolderBase]: For 70402/70402 co-relation queries the response was YES. [2024-06-21 17:07:54,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 916 events. 437/916 cut-off events. For 70402/70402 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5308 event pairs, 100 based on Foata normal form. 8/916 useless extension candidates. Maximal degree in co-relation 3959. Up to 668 conditions per place. [2024-06-21 17:07:54,568 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 48 changer transitions 9/191 dead transitions. [2024-06-21 17:07:54,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 191 transitions, 1829 flow [2024-06-21 17:07:54,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 17:07:54,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 17:07:54,569 INFO L175 Difference]: Start difference. First operand has 262 places, 175 transitions, 1359 flow. Second operand 12 states and 160 transitions. [2024-06-21 17:07:54,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 191 transitions, 1829 flow [2024-06-21 17:07:54,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 191 transitions, 1600 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-21 17:07:54,721 INFO L231 Difference]: Finished difference. Result has 261 places, 172 transitions, 1214 flow [2024-06-21 17:07:54,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1214, PETRI_PLACES=261, PETRI_TRANSITIONS=172} [2024-06-21 17:07:54,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-21 17:07:54,722 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 172 transitions, 1214 flow [2024-06-21 17:07:54,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:54,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:54,722 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 17:07:54,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 17:07:54,722 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 17:07:54,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -14288632, now seen corresponding path program 5 times [2024-06-21 17:07:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:54,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65316825] [2024-06-21 17:07:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:07:55,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:55,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65316825] [2024-06-21 17:07:55,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65316825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:55,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:55,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:07:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335184655] [2024-06-21 17:07:55,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:55,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:07:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:07:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:07:55,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:55,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 172 transitions, 1214 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:55,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:55,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:55,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:56,086 INFO L124 PetriNetUnfolderBase]: 428/899 cut-off events. [2024-06-21 17:07:56,087 INFO L125 PetriNetUnfolderBase]: For 61920/61920 co-relation queries the response was YES. [2024-06-21 17:07:56,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3694 conditions, 899 events. 428/899 cut-off events. For 61920/61920 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5217 event pairs, 94 based on Foata normal form. 6/897 useless extension candidates. Maximal degree in co-relation 3579. Up to 658 conditions per place. [2024-06-21 17:07:56,094 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 45 changer transitions 12/188 dead transitions. [2024-06-21 17:07:56,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 188 transitions, 1656 flow [2024-06-21 17:07:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 17:07:56,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 17:07:56,096 INFO L175 Difference]: Start difference. First operand has 261 places, 172 transitions, 1214 flow. Second operand 12 states and 158 transitions. [2024-06-21 17:07:56,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 188 transitions, 1656 flow [2024-06-21 17:07:56,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 188 transitions, 1550 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:56,235 INFO L231 Difference]: Finished difference. Result has 259 places, 168 transitions, 1180 flow [2024-06-21 17:07:56,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1180, PETRI_PLACES=259, PETRI_TRANSITIONS=168} [2024-06-21 17:07:56,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-21 17:07:56,236 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 168 transitions, 1180 flow [2024-06-21 17:07:56,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:56,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:56,236 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 17:07:56,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 17:07:56,236 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 17:07:56,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash 521236454, now seen corresponding path program 6 times [2024-06-21 17:07:56,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:56,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523814684] [2024-06-21 17:07:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:56,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:57,075 INFO 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 17:07:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523814684] [2024-06-21 17:07:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523814684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:07:57,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108904504] [2024-06-21 17:07:57,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:57,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:07:57,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:07:57,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:07:57,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:57,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 168 transitions, 1180 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:57,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:57,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:57,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:57,535 INFO L124 PetriNetUnfolderBase]: 424/891 cut-off events. [2024-06-21 17:07:57,536 INFO L125 PetriNetUnfolderBase]: For 71471/71471 co-relation queries the response was YES. [2024-06-21 17:07:57,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 891 events. 424/891 cut-off events. For 71471/71471 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5127 event pairs, 100 based on Foata normal form. 8/891 useless extension candidates. Maximal degree in co-relation 3557. Up to 648 conditions per place. [2024-06-21 17:07:57,542 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 50 changer transitions 9/184 dead transitions. [2024-06-21 17:07:57,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 184 transitions, 1632 flow [2024-06-21 17:07:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 17:07:57,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 17:07:57,543 INFO L175 Difference]: Start difference. First operand has 259 places, 168 transitions, 1180 flow. Second operand 12 states and 159 transitions. [2024-06-21 17:07:57,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 184 transitions, 1632 flow [2024-06-21 17:07:57,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 184 transitions, 1526 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:57,662 INFO L231 Difference]: Finished difference. Result has 253 places, 165 transitions, 1166 flow [2024-06-21 17:07:57,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1166, PETRI_PLACES=253, PETRI_TRANSITIONS=165} [2024-06-21 17:07:57,662 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-21 17:07:57,663 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 165 transitions, 1166 flow [2024-06-21 17:07:57,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:57,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:57,663 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 17:07:57,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 17:07:57,663 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 17:07:57,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash 521562884, now seen corresponding path program 7 times [2024-06-21 17:07:57,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860329920] [2024-06-21 17:07:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:07:58,741 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 17:07:58,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:07:58,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860329920] [2024-06-21 17:07:58,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860329920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:07:58,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:07:58,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:07:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769682739] [2024-06-21 17:07:58,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:07:58,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:07:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:07:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:07:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:07:58,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:07:58,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 165 transitions, 1166 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:58,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:07:58,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:07:58,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:07:59,206 INFO L124 PetriNetUnfolderBase]: 415/876 cut-off events. [2024-06-21 17:07:59,206 INFO L125 PetriNetUnfolderBase]: For 57120/57120 co-relation queries the response was YES. [2024-06-21 17:07:59,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 876 events. 415/876 cut-off events. For 57120/57120 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5062 event pairs, 89 based on Foata normal form. 6/878 useless extension candidates. Maximal degree in co-relation 3449. Up to 673 conditions per place. [2024-06-21 17:07:59,213 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 36 changer transitions 12/182 dead transitions. [2024-06-21 17:07:59,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 182 transitions, 1598 flow [2024-06-21 17:07:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:07:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:07:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 17:07:59,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:07:59,214 INFO L175 Difference]: Start difference. First operand has 253 places, 165 transitions, 1166 flow. Second operand 12 states and 156 transitions. [2024-06-21 17:07:59,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 182 transitions, 1598 flow [2024-06-21 17:07:59,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 182 transitions, 1488 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 17:07:59,318 INFO L231 Difference]: Finished difference. Result has 251 places, 161 transitions, 1110 flow [2024-06-21 17:07:59,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1110, PETRI_PLACES=251, PETRI_TRANSITIONS=161} [2024-06-21 17:07:59,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 17:07:59,319 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 161 transitions, 1110 flow [2024-06-21 17:07:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:07:59,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:07:59,319 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 17:07:59,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 17:07:59,320 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 17:07:59,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:07:59,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1549228250, now seen corresponding path program 8 times [2024-06-21 17:07:59,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:07:59,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978287215] [2024-06-21 17:07:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:07:59,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:07:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:00,346 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 17:08:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978287215] [2024-06-21 17:08:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978287215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340231625] [2024-06-21 17:08:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:00,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:00,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:00,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 161 transitions, 1110 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:00,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:00,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:00,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:00,773 INFO L124 PetriNetUnfolderBase]: 411/866 cut-off events. [2024-06-21 17:08:00,773 INFO L125 PetriNetUnfolderBase]: For 64398/64398 co-relation queries the response was YES. [2024-06-21 17:08:00,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 866 events. 411/866 cut-off events. For 64398/64398 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4945 event pairs, 100 based on Foata normal form. 8/866 useless extension candidates. Maximal degree in co-relation 3394. Up to 628 conditions per place. [2024-06-21 17:08:00,780 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 56 changer transitions 9/177 dead transitions. [2024-06-21 17:08:00,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 177 transitions, 1540 flow [2024-06-21 17:08:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 17:08:00,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 17:08:00,781 INFO L175 Difference]: Start difference. First operand has 251 places, 161 transitions, 1110 flow. Second operand 12 states and 158 transitions. [2024-06-21 17:08:00,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 177 transitions, 1540 flow [2024-06-21 17:08:00,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 177 transitions, 1452 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:00,883 INFO L231 Difference]: Finished difference. Result has 245 places, 158 transitions, 1126 flow [2024-06-21 17:08:00,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1126, PETRI_PLACES=245, PETRI_TRANSITIONS=158} [2024-06-21 17:08:00,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-21 17:08:00,884 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 158 transitions, 1126 flow [2024-06-21 17:08:00,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:00,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:00,884 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 17:08:00,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 17:08:00,884 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 17:08:00,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:00,884 INFO L85 PathProgramCache]: Analyzing trace with hash -492091880, now seen corresponding path program 9 times [2024-06-21 17:08:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:00,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451937778] [2024-06-21 17:08:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:00,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:01,755 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 17:08:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:01,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451937778] [2024-06-21 17:08:01,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451937778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:01,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:01,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:01,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886570428] [2024-06-21 17:08:01,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:01,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:01,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:01,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 158 transitions, 1126 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:01,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:01,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:01,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:02,162 INFO L124 PetriNetUnfolderBase]: 402/851 cut-off events. [2024-06-21 17:08:02,162 INFO L125 PetriNetUnfolderBase]: For 52570/52570 co-relation queries the response was YES. [2024-06-21 17:08:02,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 851 events. 402/851 cut-off events. For 52570/52570 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4870 event pairs, 96 based on Foata normal form. 6/849 useless extension candidates. Maximal degree in co-relation 3325. Up to 618 conditions per place. [2024-06-21 17:08:02,168 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 105 selfloop transitions, 53 changer transitions 12/174 dead transitions. [2024-06-21 17:08:02,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 174 transitions, 1532 flow [2024-06-21 17:08:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 17:08:02,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 17:08:02,169 INFO L175 Difference]: Start difference. First operand has 245 places, 158 transitions, 1126 flow. Second operand 12 states and 156 transitions. [2024-06-21 17:08:02,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 174 transitions, 1532 flow [2024-06-21 17:08:02,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 174 transitions, 1410 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:02,268 INFO L231 Difference]: Finished difference. Result has 243 places, 154 transitions, 1092 flow [2024-06-21 17:08:02,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1092, PETRI_PLACES=243, PETRI_TRANSITIONS=154} [2024-06-21 17:08:02,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-21 17:08:02,269 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 154 transitions, 1092 flow [2024-06-21 17:08:02,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:02,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:02,270 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 17:08:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 17:08:02,270 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 17:08:02,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1318985118, now seen corresponding path program 10 times [2024-06-21 17:08:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356659736] [2024-06-21 17:08:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:03,099 INFO 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 17:08:03,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356659736] [2024-06-21 17:08:03,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356659736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:03,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:03,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:03,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026499203] [2024-06-21 17:08:03,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:03,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:03,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:03,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 154 transitions, 1092 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:03,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:03,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:03,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:03,562 INFO L124 PetriNetUnfolderBase]: 409/875 cut-off events. [2024-06-21 17:08:03,563 INFO L125 PetriNetUnfolderBase]: For 72325/72327 co-relation queries the response was YES. [2024-06-21 17:08:03,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 875 events. 409/875 cut-off events. For 72325/72327 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4983 event pairs, 100 based on Foata normal form. 6/880 useless extension candidates. Maximal degree in co-relation 3878. Up to 667 conditions per place. [2024-06-21 17:08:03,569 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 19 changer transitions 9/175 dead transitions. [2024-06-21 17:08:03,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 175 transitions, 1694 flow [2024-06-21 17:08:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 17:08:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 17:08:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-21 17:08:03,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-21 17:08:03,570 INFO L175 Difference]: Start difference. First operand has 243 places, 154 transitions, 1092 flow. Second operand 13 states and 163 transitions. [2024-06-21 17:08:03,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 175 transitions, 1694 flow [2024-06-21 17:08:03,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 175 transitions, 1564 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:03,676 INFO L231 Difference]: Finished difference. Result has 238 places, 151 transitions, 998 flow [2024-06-21 17:08:03,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=998, PETRI_PLACES=238, PETRI_TRANSITIONS=151} [2024-06-21 17:08:03,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-21 17:08:03,676 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 151 transitions, 998 flow [2024-06-21 17:08:03,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:03,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:03,677 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 17:08:03,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 17:08:03,677 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 17:08:03,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1689883068, now seen corresponding path program 11 times [2024-06-21 17:08:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:03,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050990184] [2024-06-21 17:08:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:04,686 INFO 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 17:08:04,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050990184] [2024-06-21 17:08:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050990184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:04,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:04,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276049854] [2024-06-21 17:08:04,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:04,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:04,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:04,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 151 transitions, 998 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:04,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:04,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:04,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:05,182 INFO L124 PetriNetUnfolderBase]: 421/897 cut-off events. [2024-06-21 17:08:05,182 INFO L125 PetriNetUnfolderBase]: For 95453/95455 co-relation queries the response was YES. [2024-06-21 17:08:05,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 897 events. 421/897 cut-off events. For 95453/95455 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5061 event pairs, 112 based on Foata normal form. 6/902 useless extension candidates. Maximal degree in co-relation 4558. Up to 727 conditions per place. [2024-06-21 17:08:05,189 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 19 changer transitions 6/172 dead transitions. [2024-06-21 17:08:05,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 172 transitions, 1610 flow [2024-06-21 17:08:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 17:08:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 17:08:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-21 17:08:05,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-21 17:08:05,190 INFO L175 Difference]: Start difference. First operand has 238 places, 151 transitions, 998 flow. Second operand 13 states and 163 transitions. [2024-06-21 17:08:05,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 172 transitions, 1610 flow [2024-06-21 17:08:05,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 172 transitions, 1566 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:05,341 INFO L231 Difference]: Finished difference. Result has 235 places, 149 transitions, 987 flow [2024-06-21 17:08:05,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=987, PETRI_PLACES=235, PETRI_TRANSITIONS=149} [2024-06-21 17:08:05,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-21 17:08:05,342 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 149 transitions, 987 flow [2024-06-21 17:08:05,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:05,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:05,342 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 17:08:05,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 17:08:05,342 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 17:08:05,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash 69759428, now seen corresponding path program 12 times [2024-06-21 17:08:05,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:05,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972057060] [2024-06-21 17:08:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:05,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972057060] [2024-06-21 17:08:06,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972057060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:06,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577560615] [2024-06-21 17:08:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:06,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:06,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:06,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:06,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 149 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:06,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:06,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:06,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:06,682 INFO L124 PetriNetUnfolderBase]: 397/845 cut-off events. [2024-06-21 17:08:06,682 INFO L125 PetriNetUnfolderBase]: For 73038/73040 co-relation queries the response was YES. [2024-06-21 17:08:06,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 845 events. 397/845 cut-off events. For 73038/73040 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4723 event pairs, 104 based on Foata normal form. 8/852 useless extension candidates. Maximal degree in co-relation 3668. Up to 727 conditions per place. [2024-06-21 17:08:06,688 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 15 changer transitions 12/166 dead transitions. [2024-06-21 17:08:06,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 166 transitions, 1385 flow [2024-06-21 17:08:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 17:08:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 17:08:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-21 17:08:06,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-21 17:08:06,690 INFO L175 Difference]: Start difference. First operand has 235 places, 149 transitions, 987 flow. Second operand 13 states and 158 transitions. [2024-06-21 17:08:06,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 166 transitions, 1385 flow [2024-06-21 17:08:06,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 166 transitions, 1343 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-21 17:08:06,781 INFO L231 Difference]: Finished difference. Result has 234 places, 144 transitions, 947 flow [2024-06-21 17:08:06,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=947, PETRI_PLACES=234, PETRI_TRANSITIONS=144} [2024-06-21 17:08:06,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-21 17:08:06,782 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 144 transitions, 947 flow [2024-06-21 17:08:06,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:06,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:06,782 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 17:08:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 17:08:06,782 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 17:08:06,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:06,782 INFO L85 PathProgramCache]: Analyzing trace with hash 583762530, now seen corresponding path program 13 times [2024-06-21 17:08:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405996684] [2024-06-21 17:08:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:06,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:07,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405996684] [2024-06-21 17:08:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405996684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:07,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:07,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45733683] [2024-06-21 17:08:07,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:07,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:07,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:07,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:07,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 144 transitions, 947 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:07,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:07,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:07,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:07,978 INFO L124 PetriNetUnfolderBase]: 386/822 cut-off events. [2024-06-21 17:08:07,979 INFO L125 PetriNetUnfolderBase]: For 64339/64341 co-relation queries the response was YES. [2024-06-21 17:08:07,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3668 conditions, 822 events. 386/822 cut-off events. For 64339/64341 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4547 event pairs, 98 based on Foata normal form. 6/827 useless extension candidates. Maximal degree in co-relation 3568. Up to 667 conditions per place. [2024-06-21 17:08:07,984 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 14 changer transitions 6/163 dead transitions. [2024-06-21 17:08:07,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 163 transitions, 1507 flow [2024-06-21 17:08:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 17:08:07,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 17:08:07,985 INFO L175 Difference]: Start difference. First operand has 234 places, 144 transitions, 947 flow. Second operand 12 states and 149 transitions. [2024-06-21 17:08:07,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 163 transitions, 1507 flow [2024-06-21 17:08:08,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 163 transitions, 1442 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-21 17:08:08,082 INFO L231 Difference]: Finished difference. Result has 226 places, 142 transitions, 917 flow [2024-06-21 17:08:08,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=226, PETRI_TRANSITIONS=142} [2024-06-21 17:08:08,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-21 17:08:08,083 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 142 transitions, 917 flow [2024-06-21 17:08:08,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:08,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:08,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:08,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 17:08:08,083 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 17:08:08,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 583436100, now seen corresponding path program 14 times [2024-06-21 17:08:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586195335] [2024-06-21 17:08:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586195335] [2024-06-21 17:08:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586195335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946207742] [2024-06-21 17:08:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:09,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:09,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:09,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 142 transitions, 917 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:09,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:09,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:09,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:09,484 INFO L124 PetriNetUnfolderBase]: 362/770 cut-off events. [2024-06-21 17:08:09,484 INFO L125 PetriNetUnfolderBase]: For 42712/42714 co-relation queries the response was YES. [2024-06-21 17:08:09,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 770 events. 362/770 cut-off events. For 42712/42714 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4207 event pairs, 90 based on Foata normal form. 8/777 useless extension candidates. Maximal degree in co-relation 2656. Up to 667 conditions per place. [2024-06-21 17:08:09,489 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 9 changer transitions 15/157 dead transitions. [2024-06-21 17:08:09,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 157 transitions, 1261 flow [2024-06-21 17:08:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 17:08:09,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 17:08:09,489 INFO L175 Difference]: Start difference. First operand has 226 places, 142 transitions, 917 flow. Second operand 12 states and 144 transitions. [2024-06-21 17:08:09,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 157 transitions, 1261 flow [2024-06-21 17:08:09,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 157 transitions, 1229 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:09,543 INFO L231 Difference]: Finished difference. Result has 225 places, 135 transitions, 849 flow [2024-06-21 17:08:09,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=849, PETRI_PLACES=225, PETRI_TRANSITIONS=135} [2024-06-21 17:08:09,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-21 17:08:09,544 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 135 transitions, 849 flow [2024-06-21 17:08:09,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:09,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:09,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:09,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 17:08:09,544 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 17:08:09,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:09,545 INFO L85 PathProgramCache]: Analyzing trace with hash -355116302, now seen corresponding path program 1 times [2024-06-21 17:08:09,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:09,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474187727] [2024-06-21 17:08:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:10,580 INFO 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 17:08:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474187727] [2024-06-21 17:08:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474187727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274626208] [2024-06-21 17:08:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:10,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:10,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:10,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 135 transitions, 849 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:10,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:10,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:10,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:11,028 INFO L124 PetriNetUnfolderBase]: 350/743 cut-off events. [2024-06-21 17:08:11,029 INFO L125 PetriNetUnfolderBase]: For 36454/36454 co-relation queries the response was YES. [2024-06-21 17:08:11,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 743 events. 350/743 cut-off events. For 36454/36454 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4012 event pairs, 75 based on Foata normal form. 6/748 useless extension candidates. Maximal degree in co-relation 2519. Up to 589 conditions per place. [2024-06-21 17:08:11,036 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 11 changer transitions 25/160 dead transitions. [2024-06-21 17:08:11,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 160 transitions, 1227 flow [2024-06-21 17:08:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 17:08:11,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 17:08:11,037 INFO L175 Difference]: Start difference. First operand has 225 places, 135 transitions, 849 flow. Second operand 12 states and 152 transitions. [2024-06-21 17:08:11,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 160 transitions, 1227 flow [2024-06-21 17:08:11,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 160 transitions, 1180 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 17:08:11,095 INFO L231 Difference]: Finished difference. Result has 217 places, 127 transitions, 785 flow [2024-06-21 17:08:11,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=785, PETRI_PLACES=217, PETRI_TRANSITIONS=127} [2024-06-21 17:08:11,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-21 17:08:11,096 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 127 transitions, 785 flow [2024-06-21 17:08:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:11,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:11,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 17:08:11,097 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 17:08:11,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1112984264, now seen corresponding path program 2 times [2024-06-21 17:08:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:11,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556544772] [2024-06-21 17:08:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:11,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556544772] [2024-06-21 17:08:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556544772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:12,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:12,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:12,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932080058] [2024-06-21 17:08:12,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:12,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:12,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:12,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:12,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:12,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:12,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 127 transitions, 785 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:12,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:12,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:12,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:12,632 INFO L124 PetriNetUnfolderBase]: 316/683 cut-off events. [2024-06-21 17:08:12,632 INFO L125 PetriNetUnfolderBase]: For 35183/35183 co-relation queries the response was YES. [2024-06-21 17:08:12,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 683 events. 316/683 cut-off events. For 35183/35183 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3652 event pairs, 75 based on Foata normal form. 6/688 useless extension candidates. Maximal degree in co-relation 2289. Up to 560 conditions per place. [2024-06-21 17:08:12,636 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 18 changer transitions 10/145 dead transitions. [2024-06-21 17:08:12,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 145 transitions, 1113 flow [2024-06-21 17:08:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 17:08:12,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 17:08:12,637 INFO L175 Difference]: Start difference. First operand has 217 places, 127 transitions, 785 flow. Second operand 12 states and 147 transitions. [2024-06-21 17:08:12,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 145 transitions, 1113 flow [2024-06-21 17:08:12,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 145 transitions, 1073 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-21 17:08:12,688 INFO L231 Difference]: Finished difference. Result has 205 places, 124 transitions, 772 flow [2024-06-21 17:08:12,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=772, PETRI_PLACES=205, PETRI_TRANSITIONS=124} [2024-06-21 17:08:12,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-21 17:08:12,688 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 124 transitions, 772 flow [2024-06-21 17:08:12,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:12,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:12,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:12,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 17:08:12,689 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 17:08:12,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:12,689 INFO L85 PathProgramCache]: Analyzing trace with hash -279975020, now seen corresponding path program 3 times [2024-06-21 17:08:12,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:12,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382001934] [2024-06-21 17:08:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:12,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:13,776 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 17:08:13,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:13,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382001934] [2024-06-21 17:08:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382001934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:13,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362274711] [2024-06-21 17:08:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:13,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:13,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:13,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:13,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 124 transitions, 772 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:13,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:13,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:13,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:14,101 INFO L124 PetriNetUnfolderBase]: 309/670 cut-off events. [2024-06-21 17:08:14,101 INFO L125 PetriNetUnfolderBase]: For 29911/29911 co-relation queries the response was YES. [2024-06-21 17:08:14,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 670 events. 309/670 cut-off events. For 29911/29911 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3576 event pairs, 73 based on Foata normal form. 6/675 useless extension candidates. Maximal degree in co-relation 2221. Up to 542 conditions per place. [2024-06-21 17:08:14,105 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 16 changer transitions 13/143 dead transitions. [2024-06-21 17:08:14,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 143 transitions, 1096 flow [2024-06-21 17:08:14,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 17:08:14,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 17:08:14,106 INFO L175 Difference]: Start difference. First operand has 205 places, 124 transitions, 772 flow. Second operand 12 states and 147 transitions. [2024-06-21 17:08:14,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 143 transitions, 1096 flow [2024-06-21 17:08:14,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 143 transitions, 1054 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:14,148 INFO L231 Difference]: Finished difference. Result has 201 places, 120 transitions, 747 flow [2024-06-21 17:08:14,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=747, PETRI_PLACES=201, PETRI_TRANSITIONS=120} [2024-06-21 17:08:14,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-21 17:08:14,148 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 120 transitions, 747 flow [2024-06-21 17:08:14,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:14,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:14,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:14,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 17:08:14,149 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 17:08:14,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash -252024180, now seen corresponding path program 4 times [2024-06-21 17:08:14,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:14,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144042355] [2024-06-21 17:08:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:14,989 INFO 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 17:08:14,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144042355] [2024-06-21 17:08:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144042355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:14,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:14,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139619458] [2024-06-21 17:08:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:14,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:15,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:15,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 120 transitions, 747 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:15,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:15,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:15,367 INFO L124 PetriNetUnfolderBase]: 298/649 cut-off events. [2024-06-21 17:08:15,368 INFO L125 PetriNetUnfolderBase]: For 28247/28247 co-relation queries the response was YES. [2024-06-21 17:08:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 649 events. 298/649 cut-off events. For 28247/28247 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3413 event pairs, 69 based on Foata normal form. 6/654 useless extension candidates. Maximal degree in co-relation 2149. Up to 516 conditions per place. [2024-06-21 17:08:15,371 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 13 changer transitions 17/140 dead transitions. [2024-06-21 17:08:15,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 140 transitions, 1067 flow [2024-06-21 17:08:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 17:08:15,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 17:08:15,372 INFO L175 Difference]: Start difference. First operand has 201 places, 120 transitions, 747 flow. Second operand 12 states and 147 transitions. [2024-06-21 17:08:15,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 140 transitions, 1067 flow [2024-06-21 17:08:15,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 140 transitions, 1027 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:15,412 INFO L231 Difference]: Finished difference. Result has 195 places, 114 transitions, 706 flow [2024-06-21 17:08:15,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=706, PETRI_PLACES=195, PETRI_TRANSITIONS=114} [2024-06-21 17:08:15,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-21 17:08:15,412 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 114 transitions, 706 flow [2024-06-21 17:08:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:15,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:15,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:15,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 17:08:15,414 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 17:08:15,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:15,414 INFO L85 PathProgramCache]: Analyzing trace with hash 952683842, now seen corresponding path program 5 times [2024-06-21 17:08:15,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:15,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622238097] [2024-06-21 17:08:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:15,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:16,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:16,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622238097] [2024-06-21 17:08:16,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622238097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:16,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:16,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:16,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523784416] [2024-06-21 17:08:16,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:16,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:16,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:16,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:16,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 114 transitions, 706 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call 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: 8 of 32 [2024-06-21 17:08:16,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:17,073 INFO L124 PetriNetUnfolderBase]: 281/618 cut-off events. [2024-06-21 17:08:17,073 INFO L125 PetriNetUnfolderBase]: For 25841/25841 co-relation queries the response was YES. [2024-06-21 17:08:17,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 618 events. 281/618 cut-off events. For 25841/25841 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3216 event pairs, 63 based on Foata normal form. 6/623 useless extension candidates. Maximal degree in co-relation 2039. Up to 480 conditions per place. [2024-06-21 17:08:17,077 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 6 changer transitions 28/135 dead transitions. [2024-06-21 17:08:17,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 135 transitions, 1018 flow [2024-06-21 17:08:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 17:08:17,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 17:08:17,078 INFO L175 Difference]: Start difference. First operand has 195 places, 114 transitions, 706 flow. Second operand 12 states and 147 transitions. [2024-06-21 17:08:17,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 135 transitions, 1018 flow [2024-06-21 17:08:17,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 135 transitions, 982 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:17,113 INFO L231 Difference]: Finished difference. Result has 187 places, 103 transitions, 618 flow [2024-06-21 17:08:17,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=187, PETRI_TRANSITIONS=103} [2024-06-21 17:08:17,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-21 17:08:17,114 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 103 transitions, 618 flow [2024-06-21 17:08:17,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:17,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:17,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:17,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 17:08:17,115 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 17:08:17,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1369109442, now seen corresponding path program 6 times [2024-06-21 17:08:17,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:17,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133830128] [2024-06-21 17:08:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:18,106 INFO 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 17:08:18,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133830128] [2024-06-21 17:08:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133830128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:18,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:18,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506365138] [2024-06-21 17:08:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:18,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:18,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:18,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:18,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:18,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 103 transitions, 618 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:18,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:18,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:18,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:18,564 INFO L124 PetriNetUnfolderBase]: 252/549 cut-off events. [2024-06-21 17:08:18,565 INFO L125 PetriNetUnfolderBase]: For 22782/22782 co-relation queries the response was YES. [2024-06-21 17:08:18,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 549 events. 252/549 cut-off events. For 22782/22782 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2773 event pairs, 57 based on Foata normal form. 6/554 useless extension candidates. Maximal degree in co-relation 1812. Up to 411 conditions per place. [2024-06-21 17:08:18,568 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 16 changer transitions 12/120 dead transitions. [2024-06-21 17:08:18,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 120 transitions, 886 flow [2024-06-21 17:08:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 17:08:18,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 17:08:18,569 INFO L175 Difference]: Start difference. First operand has 187 places, 103 transitions, 618 flow. Second operand 12 states and 149 transitions. [2024-06-21 17:08:18,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 120 transitions, 886 flow [2024-06-21 17:08:18,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 120 transitions, 857 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:18,591 INFO L231 Difference]: Finished difference. Result has 172 places, 99 transitions, 604 flow [2024-06-21 17:08:18,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=604, PETRI_PLACES=172, PETRI_TRANSITIONS=99} [2024-06-21 17:08:18,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-21 17:08:18,592 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 99 transitions, 604 flow [2024-06-21 17:08:18,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:18,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:18,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:18,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 17:08:18,592 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 17:08:18,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash 224281330, now seen corresponding path program 7 times [2024-06-21 17:08:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:18,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860845809] [2024-06-21 17:08:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:18,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:19,664 INFO 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 17:08:19,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860845809] [2024-06-21 17:08:19,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860845809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:19,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:19,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217709583] [2024-06-21 17:08:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:19,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:19,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:19,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:19,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 99 transitions, 604 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:19,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:19,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:19,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:20,113 INFO L124 PetriNetUnfolderBase]: 238/523 cut-off events. [2024-06-21 17:08:20,113 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-06-21 17:08:20,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 523 events. 238/523 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2602 event pairs, 57 based on Foata normal form. 6/528 useless extension candidates. Maximal degree in co-relation 1729. Up to 407 conditions per place. [2024-06-21 17:08:20,117 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 13 changer transitions 15/115 dead transitions. [2024-06-21 17:08:20,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 115 transitions, 860 flow [2024-06-21 17:08:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 17:08:20,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 17:08:20,117 INFO L175 Difference]: Start difference. First operand has 172 places, 99 transitions, 604 flow. Second operand 12 states and 145 transitions. [2024-06-21 17:08:20,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 115 transitions, 860 flow [2024-06-21 17:08:20,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 115 transitions, 820 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:20,141 INFO L231 Difference]: Finished difference. Result has 166 places, 94 transitions, 565 flow [2024-06-21 17:08:20,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=565, PETRI_PLACES=166, PETRI_TRANSITIONS=94} [2024-06-21 17:08:20,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-21 17:08:20,141 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 94 transitions, 565 flow [2024-06-21 17:08:20,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:20,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:20,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:20,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 17:08:20,142 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 17:08:20,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1386970496, now seen corresponding path program 8 times [2024-06-21 17:08:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:20,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713982269] [2024-06-21 17:08:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:20,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:21,318 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 17:08:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713982269] [2024-06-21 17:08:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713982269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:21,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:21,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043068724] [2024-06-21 17:08:21,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:21,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:21,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:21,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 94 transitions, 565 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:21,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:21,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:21,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:21,792 INFO L124 PetriNetUnfolderBase]: 226/499 cut-off events. [2024-06-21 17:08:21,792 INFO L125 PetriNetUnfolderBase]: For 17246/17246 co-relation queries the response was YES. [2024-06-21 17:08:21,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 499 events. 226/499 cut-off events. For 17246/17246 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2443 event pairs, 55 based on Foata normal form. 6/504 useless extension candidates. Maximal degree in co-relation 1633. Up to 389 conditions per place. [2024-06-21 17:08:21,795 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 12 changer transitions 13/110 dead transitions. [2024-06-21 17:08:21,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 110 transitions, 811 flow [2024-06-21 17:08:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 17:08:21,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 17:08:21,796 INFO L175 Difference]: Start difference. First operand has 166 places, 94 transitions, 565 flow. Second operand 12 states and 145 transitions. [2024-06-21 17:08:21,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 110 transitions, 811 flow [2024-06-21 17:08:21,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 110 transitions, 769 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:21,816 INFO L231 Difference]: Finished difference. Result has 158 places, 90 transitions, 530 flow [2024-06-21 17:08:21,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=530, PETRI_PLACES=158, PETRI_TRANSITIONS=90} [2024-06-21 17:08:21,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-21 17:08:21,817 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 90 transitions, 530 flow [2024-06-21 17:08:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:21,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:21,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:21,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 17:08:21,817 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 17:08:21,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash 872243678, now seen corresponding path program 9 times [2024-06-21 17:08:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764992250] [2024-06-21 17:08:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:22,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:22,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764992250] [2024-06-21 17:08:22,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764992250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:22,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:22,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823117797] [2024-06-21 17:08:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:23,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:23,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 90 transitions, 530 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:23,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:23,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:23,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:23,383 INFO L124 PetriNetUnfolderBase]: 215/478 cut-off events. [2024-06-21 17:08:23,383 INFO L125 PetriNetUnfolderBase]: For 15966/15966 co-relation queries the response was YES. [2024-06-21 17:08:23,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 478 events. 215/478 cut-off events. For 15966/15966 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2291 event pairs, 40 based on Foata normal form. 6/483 useless extension candidates. Maximal degree in co-relation 1553. Up to 319 conditions per place. [2024-06-21 17:08:23,386 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 12 changer transitions 16/108 dead transitions. [2024-06-21 17:08:23,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 108 transitions, 776 flow [2024-06-21 17:08:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 17:08:23,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 17:08:23,387 INFO L175 Difference]: Start difference. First operand has 158 places, 90 transitions, 530 flow. Second operand 12 states and 148 transitions. [2024-06-21 17:08:23,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 108 transitions, 776 flow [2024-06-21 17:08:23,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 108 transitions, 743 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:23,403 INFO L231 Difference]: Finished difference. Result has 152 places, 84 transitions, 498 flow [2024-06-21 17:08:23,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=498, PETRI_PLACES=152, PETRI_TRANSITIONS=84} [2024-06-21 17:08:23,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-21 17:08:23,404 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 84 transitions, 498 flow [2024-06-21 17:08:23,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:23,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:23,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:23,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 17:08:23,405 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 17:08:23,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1171035036, now seen corresponding path program 10 times [2024-06-21 17:08:23,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:23,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567124167] [2024-06-21 17:08:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:23,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567124167] [2024-06-21 17:08:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567124167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355300822] [2024-06-21 17:08:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:24,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:24,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 84 transitions, 498 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:24,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:24,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:24,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:24,996 INFO L124 PetriNetUnfolderBase]: 196/439 cut-off events. [2024-06-21 17:08:24,996 INFO L125 PetriNetUnfolderBase]: For 14795/14795 co-relation queries the response was YES. [2024-06-21 17:08:24,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 439 events. 196/439 cut-off events. For 14795/14795 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2050 event pairs, 43 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 1445. Up to 315 conditions per place. [2024-06-21 17:08:24,998 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 10 changer transitions 13/101 dead transitions. [2024-06-21 17:08:24,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 101 transitions, 728 flow [2024-06-21 17:08:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 17:08:24,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 17:08:25,000 INFO L175 Difference]: Start difference. First operand has 152 places, 84 transitions, 498 flow. Second operand 12 states and 145 transitions. [2024-06-21 17:08:25,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 101 transitions, 728 flow [2024-06-21 17:08:25,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 101 transitions, 694 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:25,014 INFO L231 Difference]: Finished difference. Result has 143 places, 79 transitions, 465 flow [2024-06-21 17:08:25,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=465, PETRI_PLACES=143, PETRI_TRANSITIONS=79} [2024-06-21 17:08:25,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 17:08:25,015 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 79 transitions, 465 flow [2024-06-21 17:08:25,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:25,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:25,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:25,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 17:08:25,015 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 17:08:25,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1030659552, now seen corresponding path program 11 times [2024-06-21 17:08:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:25,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183634330] [2024-06-21 17:08:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:25,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:25,932 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 17:08:25,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183634330] [2024-06-21 17:08:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183634330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:25,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:25,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:25,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431171803] [2024-06-21 17:08:25,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:25,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:25,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:26,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:26,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 79 transitions, 465 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:26,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:26,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:26,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:26,312 INFO L124 PetriNetUnfolderBase]: 181/408 cut-off events. [2024-06-21 17:08:26,312 INFO L125 PetriNetUnfolderBase]: For 12466/12466 co-relation queries the response was YES. [2024-06-21 17:08:26,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 408 events. 181/408 cut-off events. For 12466/12466 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1836 event pairs, 43 based on Foata normal form. 6/413 useless extension candidates. Maximal degree in co-relation 1337. Up to 311 conditions per place. [2024-06-21 17:08:26,314 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 3 changer transitions 25/95 dead transitions. [2024-06-21 17:08:26,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 95 transitions, 681 flow [2024-06-21 17:08:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 17:08:26,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 17:08:26,315 INFO L175 Difference]: Start difference. First operand has 143 places, 79 transitions, 465 flow. Second operand 12 states and 141 transitions. [2024-06-21 17:08:26,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 95 transitions, 681 flow [2024-06-21 17:08:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 95 transitions, 653 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:26,327 INFO L231 Difference]: Finished difference. Result has 136 places, 69 transitions, 397 flow [2024-06-21 17:08:26,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=397, PETRI_PLACES=136, PETRI_TRANSITIONS=69} [2024-06-21 17:08:26,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-21 17:08:26,328 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 69 transitions, 397 flow [2024-06-21 17:08:26,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:26,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:26,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:26,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 17:08:26,328 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 17:08:26,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:26,329 INFO L85 PathProgramCache]: Analyzing trace with hash 351474324, now seen corresponding path program 12 times [2024-06-21 17:08:26,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:26,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941934246] [2024-06-21 17:08:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:26,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:27,384 INFO 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 17:08:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941934246] [2024-06-21 17:08:27,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941934246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:27,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:27,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999560056] [2024-06-21 17:08:27,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:27,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:27,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 69 transitions, 397 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:27,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:27,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:27,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:27,682 INFO L124 PetriNetUnfolderBase]: 162/357 cut-off events. [2024-06-21 17:08:27,682 INFO L125 PetriNetUnfolderBase]: For 10818/10818 co-relation queries the response was YES. [2024-06-21 17:08:27,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 357 events. 162/357 cut-off events. For 10818/10818 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1556 event pairs, 41 based on Foata normal form. 6/362 useless extension candidates. Maximal degree in co-relation 1166. Up to 236 conditions per place. [2024-06-21 17:08:27,684 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 47 selfloop transitions, 18 changer transitions 14/83 dead transitions. [2024-06-21 17:08:27,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 83 transitions, 583 flow [2024-06-21 17:08:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-21 17:08:27,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-21 17:08:27,714 INFO L175 Difference]: Start difference. First operand has 136 places, 69 transitions, 397 flow. Second operand 12 states and 143 transitions. [2024-06-21 17:08:27,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 83 transitions, 583 flow [2024-06-21 17:08:27,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 83 transitions, 550 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-21 17:08:27,722 INFO L231 Difference]: Finished difference. Result has 119 places, 64 transitions, 379 flow [2024-06-21 17:08:27,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=379, PETRI_PLACES=119, PETRI_TRANSITIONS=64} [2024-06-21 17:08:27,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-21 17:08:27,724 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 64 transitions, 379 flow [2024-06-21 17:08:27,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:27,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:27,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:27,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 17:08:27,726 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 17:08:27,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash -810801120, now seen corresponding path program 13 times [2024-06-21 17:08:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:27,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353510444] [2024-06-21 17:08:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:28,580 INFO 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 17:08:28,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:28,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353510444] [2024-06-21 17:08:28,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353510444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:28,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:28,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:28,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824774814] [2024-06-21 17:08:28,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:28,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:28,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:28,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 64 transitions, 379 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:28,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:28,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:28,900 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-21 17:08:28,900 INFO L125 PetriNetUnfolderBase]: For 8000/8000 co-relation queries the response was YES. [2024-06-21 17:08:28,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 331 events. 150/331 cut-off events. For 8000/8000 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1387 event pairs, 39 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1086. Up to 218 conditions per place. [2024-06-21 17:08:28,902 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 18 changer transitions 13/78 dead transitions. [2024-06-21 17:08:28,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 78 transitions, 555 flow [2024-06-21 17:08:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 17:08:28,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 17:08:28,903 INFO L175 Difference]: Start difference. First operand has 119 places, 64 transitions, 379 flow. Second operand 12 states and 141 transitions. [2024-06-21 17:08:28,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 78 transitions, 555 flow [2024-06-21 17:08:28,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 78 transitions, 507 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:28,911 INFO L231 Difference]: Finished difference. Result has 112 places, 60 transitions, 352 flow [2024-06-21 17:08:28,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=112, PETRI_TRANSITIONS=60} [2024-06-21 17:08:28,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-21 17:08:28,911 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 60 transitions, 352 flow [2024-06-21 17:08:28,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:28,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:28,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:28,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 17:08:28,912 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 17:08:28,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 211098840, now seen corresponding path program 14 times [2024-06-21 17:08:28,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:28,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113163901] [2024-06-21 17:08:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:30,039 INFO 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 17:08:30,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113163901] [2024-06-21 17:08:30,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113163901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:30,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:30,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:30,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942416389] [2024-06-21 17:08:30,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:30,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:30,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:30,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:30,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:30,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 60 transitions, 352 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:30,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:30,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:30,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:30,302 INFO L124 PetriNetUnfolderBase]: 139/310 cut-off events. [2024-06-21 17:08:30,302 INFO L125 PetriNetUnfolderBase]: For 7194/7198 co-relation queries the response was YES. [2024-06-21 17:08:30,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 310 events. 139/310 cut-off events. For 7194/7198 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1272 event pairs, 33 based on Foata normal form. 10/319 useless extension candidates. Maximal degree in co-relation 1012. Up to 178 conditions per place. [2024-06-21 17:08:30,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 41 selfloop transitions, 16 changer transitions 14/75 dead transitions. [2024-06-21 17:08:30,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 75 transitions, 524 flow [2024-06-21 17:08:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-21 17:08:30,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-21 17:08:30,305 INFO L175 Difference]: Start difference. First operand has 112 places, 60 transitions, 352 flow. Second operand 12 states and 143 transitions. [2024-06-21 17:08:30,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 75 transitions, 524 flow [2024-06-21 17:08:30,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 75 transitions, 480 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:30,311 INFO L231 Difference]: Finished difference. Result has 106 places, 54 transitions, 313 flow [2024-06-21 17:08:30,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=313, PETRI_PLACES=106, PETRI_TRANSITIONS=54} [2024-06-21 17:08:30,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-21 17:08:30,311 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 54 transitions, 313 flow [2024-06-21 17:08:30,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:30,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:30,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:30,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 17:08:30,312 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 17:08:30,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash -17098988, now seen corresponding path program 15 times [2024-06-21 17:08:30,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:30,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989463121] [2024-06-21 17:08:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:31,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:31,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989463121] [2024-06-21 17:08:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989463121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:31,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:31,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014484443] [2024-06-21 17:08:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:31,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:31,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:31,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:31,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 54 transitions, 313 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:31,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:31,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:31,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:31,774 INFO L124 PetriNetUnfolderBase]: 123/274 cut-off events. [2024-06-21 17:08:31,775 INFO L125 PetriNetUnfolderBase]: For 5956/5960 co-relation queries the response was YES. [2024-06-21 17:08:31,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 274 events. 123/274 cut-off events. For 5956/5960 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1061 event pairs, 33 based on Foata normal form. 10/283 useless extension candidates. Maximal degree in co-relation 900. Up to 174 conditions per place. [2024-06-21 17:08:31,776 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 33 selfloop transitions, 14 changer transitions 17/68 dead transitions. [2024-06-21 17:08:31,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 68 transitions, 469 flow [2024-06-21 17:08:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 17:08:31,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 17:08:31,792 INFO L175 Difference]: Start difference. First operand has 106 places, 54 transitions, 313 flow. Second operand 12 states and 141 transitions. [2024-06-21 17:08:31,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 68 transitions, 469 flow [2024-06-21 17:08:31,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 68 transitions, 427 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 17:08:31,812 INFO L231 Difference]: Finished difference. Result has 97 places, 47 transitions, 270 flow [2024-06-21 17:08:31,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=270, PETRI_PLACES=97, PETRI_TRANSITIONS=47} [2024-06-21 17:08:31,813 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-21 17:08:31,813 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 47 transitions, 270 flow [2024-06-21 17:08:31,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:31,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:31,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:31,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 17:08:31,814 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 17:08:31,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:31,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1867887346, now seen corresponding path program 16 times [2024-06-21 17:08:31,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:31,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931249156] [2024-06-21 17:08:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:31,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:32,741 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 17:08:32,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931249156] [2024-06-21 17:08:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931249156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:32,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:32,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722732191] [2024-06-21 17:08:32,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:32,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:32,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:32,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 47 transitions, 270 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:32,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:32,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:32,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:33,069 INFO L124 PetriNetUnfolderBase]: 109/240 cut-off events. [2024-06-21 17:08:33,069 INFO L125 PetriNetUnfolderBase]: For 4522/4526 co-relation queries the response was YES. [2024-06-21 17:08:33,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 240 events. 109/240 cut-off events. For 4522/4526 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 875 event pairs, 31 based on Foata normal form. 10/249 useless extension candidates. Maximal degree in co-relation 784. Up to 156 conditions per place. [2024-06-21 17:08:33,070 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 13 changer transitions 14/61 dead transitions. [2024-06-21 17:08:33,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 412 flow [2024-06-21 17:08:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 17:08:33,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 17:08:33,071 INFO L175 Difference]: Start difference. First operand has 97 places, 47 transitions, 270 flow. Second operand 12 states and 139 transitions. [2024-06-21 17:08:33,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 412 flow [2024-06-21 17:08:33,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 372 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:33,075 INFO L231 Difference]: Finished difference. Result has 86 places, 42 transitions, 235 flow [2024-06-21 17:08:33,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=86, PETRI_TRANSITIONS=42} [2024-06-21 17:08:33,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-21 17:08:33,075 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 42 transitions, 235 flow [2024-06-21 17:08:33,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:33,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:33,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:33,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 17:08:33,076 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 17:08:33,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash -647193116, now seen corresponding path program 17 times [2024-06-21 17:08:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:33,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658713836] [2024-06-21 17:08:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:33,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658713836] [2024-06-21 17:08:34,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658713836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:34,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:34,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:34,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741693616] [2024-06-21 17:08:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:34,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:34,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:34,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:34,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:34,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:34,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 42 transitions, 235 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:34,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:34,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:34,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:34,368 INFO L124 PetriNetUnfolderBase]: 97/214 cut-off events. [2024-06-21 17:08:34,369 INFO L125 PetriNetUnfolderBase]: For 3012/3012 co-relation queries the response was YES. [2024-06-21 17:08:34,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 214 events. 97/214 cut-off events. For 3012/3012 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 732 event pairs, 29 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 686. Up to 138 conditions per place. [2024-06-21 17:08:34,369 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 11 changer transitions 13/56 dead transitions. [2024-06-21 17:08:34,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 56 transitions, 367 flow [2024-06-21 17:08:34,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 17:08:34,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 17:08:34,385 INFO L175 Difference]: Start difference. First operand has 86 places, 42 transitions, 235 flow. Second operand 12 states and 139 transitions. [2024-06-21 17:08:34,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 56 transitions, 367 flow [2024-06-21 17:08:34,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 56 transitions, 323 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 17:08:34,388 INFO L231 Difference]: Finished difference. Result has 78 places, 38 transitions, 198 flow [2024-06-21 17:08:34,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=198, PETRI_PLACES=78, PETRI_TRANSITIONS=38} [2024-06-21 17:08:34,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-21 17:08:34,388 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 38 transitions, 198 flow [2024-06-21 17:08:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:34,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:34,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 17:08:34,389 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 17:08:34,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1727511862, now seen corresponding path program 18 times [2024-06-21 17:08:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933307344] [2024-06-21 17:08:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:35,553 INFO 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 17:08:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933307344] [2024-06-21 17:08:35,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933307344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:35,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:35,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:35,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672998464] [2024-06-21 17:08:35,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:35,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:35,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:35,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 38 transitions, 198 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:35,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:35,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:35,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:35,913 INFO L124 PetriNetUnfolderBase]: 86/193 cut-off events. [2024-06-21 17:08:35,913 INFO L125 PetriNetUnfolderBase]: For 2492/2492 co-relation queries the response was YES. [2024-06-21 17:08:35,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 193 events. 86/193 cut-off events. For 2492/2492 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 619 event pairs, 25 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 604. Up to 112 conditions per place. [2024-06-21 17:08:35,914 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 8 changer transitions 17/53 dead transitions. [2024-06-21 17:08:35,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 53 transitions, 326 flow [2024-06-21 17:08:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 17:08:35,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 17:08:35,915 INFO L175 Difference]: Start difference. First operand has 78 places, 38 transitions, 198 flow. Second operand 12 states and 139 transitions. [2024-06-21 17:08:35,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 53 transitions, 326 flow [2024-06-21 17:08:35,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 53 transitions, 298 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 17:08:35,917 INFO L231 Difference]: Finished difference. Result has 73 places, 32 transitions, 163 flow [2024-06-21 17:08:35,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=73, PETRI_TRANSITIONS=32} [2024-06-21 17:08:35,917 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-21 17:08:35,917 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 32 transitions, 163 flow [2024-06-21 17:08:35,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:35,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:35,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 17:08:35,918 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 17:08:35,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash 143391474, now seen corresponding path program 19 times [2024-06-21 17:08:35,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:35,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942875013] [2024-06-21 17:08:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:35,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:37,187 INFO 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 17:08:37,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:37,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942875013] [2024-06-21 17:08:37,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942875013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:37,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:37,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:37,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226177760] [2024-06-21 17:08:37,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:37,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:37,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:37,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:37,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 32 transitions, 163 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:37,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:37,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:37,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:37,611 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-06-21 17:08:37,611 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2024-06-21 17:08:37,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 159 events. 70/159 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 458 event pairs, 23 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 500. Up to 94 conditions per place. [2024-06-21 17:08:37,612 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 21 selfloop transitions, 8 changer transitions 13/46 dead transitions. [2024-06-21 17:08:37,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 46 transitions, 275 flow [2024-06-21 17:08:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 17:08:37,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 17:08:37,613 INFO L175 Difference]: Start difference. First operand has 73 places, 32 transitions, 163 flow. Second operand 12 states and 136 transitions. [2024-06-21 17:08:37,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 46 transitions, 275 flow [2024-06-21 17:08:37,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 246 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 17:08:37,615 INFO L231 Difference]: Finished difference. Result has 64 places, 28 transitions, 135 flow [2024-06-21 17:08:37,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=28} [2024-06-21 17:08:37,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-21 17:08:37,615 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 28 transitions, 135 flow [2024-06-21 17:08:37,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:37,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:37,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:37,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 17:08:37,616 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 17:08:37,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash -26716310, now seen corresponding path program 20 times [2024-06-21 17:08:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:37,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625515349] [2024-06-21 17:08:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:38,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:38,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625515349] [2024-06-21 17:08:38,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625515349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:38,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:38,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:38,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301030254] [2024-06-21 17:08:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:38,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:38,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:38,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:38,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 28 transitions, 135 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:38,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:38,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:38,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:39,090 INFO L124 PetriNetUnfolderBase]: 59/138 cut-off events. [2024-06-21 17:08:39,091 INFO L125 PetriNetUnfolderBase]: For 1408/1408 co-relation queries the response was YES. [2024-06-21 17:08:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 138 events. 59/138 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 354 event pairs, 19 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 422. Up to 68 conditions per place. [2024-06-21 17:08:39,091 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 17 selfloop transitions, 6 changer transitions 16/43 dead transitions. [2024-06-21 17:08:39,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 243 flow [2024-06-21 17:08:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 17:08:39,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 17:08:39,092 INFO L175 Difference]: Start difference. First operand has 64 places, 28 transitions, 135 flow. Second operand 12 states and 136 transitions. [2024-06-21 17:08:39,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 243 flow [2024-06-21 17:08:39,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 43 transitions, 219 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 17:08:39,093 INFO L231 Difference]: Finished difference. Result has 58 places, 23 transitions, 104 flow [2024-06-21 17:08:39,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=23} [2024-06-21 17:08:39,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-21 17:08:39,116 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 23 transitions, 104 flow [2024-06-21 17:08:39,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:39,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:08:39,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:39,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 17:08:39,117 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 17:08:39,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:08:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash -137538830, now seen corresponding path program 21 times [2024-06-21 17:08:39,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:08:39,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142053005] [2024-06-21 17:08:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:08:39,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:08:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:08:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:08:40,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:08:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142053005] [2024-06-21 17:08:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142053005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:08:40,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:08:40,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 17:08:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406862705] [2024-06-21 17:08:40,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:08:40,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 17:08:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:08:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 17:08:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 17:08:40,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 17:08:40,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 23 transitions, 104 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:40,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:08:40,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 17:08:40,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:08:40,589 INFO L124 PetriNetUnfolderBase]: 29/76 cut-off events. [2024-06-21 17:08:40,589 INFO L125 PetriNetUnfolderBase]: For 468/468 co-relation queries the response was YES. [2024-06-21 17:08:40,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 76 events. 29/76 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 186. Up to 24 conditions per place. [2024-06-21 17:08:40,589 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-06-21 17:08:40,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 34 transitions, 162 flow [2024-06-21 17:08:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 17:08:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 17:08:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 17:08:40,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-21 17:08:40,590 INFO L175 Difference]: Start difference. First operand has 58 places, 23 transitions, 104 flow. Second operand 12 states and 127 transitions. [2024-06-21 17:08:40,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 34 transitions, 162 flow [2024-06-21 17:08:40,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-06-21 17:08:40,590 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-21 17:08:40,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-21 17:08:40,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-21 17:08:40,591 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-21 17:08:40,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:08:40,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 17:08:40,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 17:08:40,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 17:08:40,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 17:08:40,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 17:08:40,596 INFO L445 BasicCegarLoop]: Path program histogram: [21, 21, 20, 14, 10, 7, 7, 6, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:08:40,598 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 17:08:40,598 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 17:08:40,601 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 17:08:40,601 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 17:08:40,601 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 05:08:40 BasicIcfg [2024-06-21 17:08:40,601 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 17:08:40,602 INFO L158 Benchmark]: Toolchain (without parser) took 165163.34ms. Allocated memory was 190.8MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 159.1MB in the beginning and 914.2MB in the end (delta: -755.1MB). Peak memory consumption was 171.8MB. Max. memory is 16.1GB. [2024-06-21 17:08:40,602 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 17:08:40,602 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 144.7MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 17:08:40,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.20ms. Allocated memory is still 190.8MB. Free memory was 158.2MB in the beginning and 125.8MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-21 17:08:40,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.65ms. Allocated memory is still 190.8MB. Free memory was 125.8MB in the beginning and 123.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 17:08:40,603 INFO L158 Benchmark]: Boogie Preprocessor took 38.51ms. Allocated memory is still 190.8MB. Free memory was 123.4MB in the beginning and 120.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 17:08:40,603 INFO L158 Benchmark]: RCFGBuilder took 639.91ms. Allocated memory is still 190.8MB. Free memory was 120.5MB in the beginning and 139.2MB in the end (delta: -18.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-21 17:08:40,603 INFO L158 Benchmark]: TraceAbstraction took 163905.70ms. Allocated memory was 190.8MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 139.2MB in the beginning and 914.2MB in the end (delta: -775.0MB). Peak memory consumption was 154.1MB. Max. memory is 16.1GB. [2024-06-21 17:08:40,604 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 144.7MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 144.7MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.20ms. Allocated memory is still 190.8MB. Free memory was 158.2MB in the beginning and 125.8MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.65ms. Allocated memory is still 190.8MB. Free memory was 125.8MB in the beginning and 123.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.51ms. Allocated memory is still 190.8MB. Free memory was 123.4MB in the beginning and 120.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 639.91ms. Allocated memory is still 190.8MB. Free memory was 120.5MB in the beginning and 139.2MB in the end (delta: -18.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 163905.70ms. Allocated memory was 190.8MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 139.2MB in the beginning and 914.2MB in the end (delta: -775.0MB). Peak memory consumption was 154.1MB. 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, 52 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: 163.8s, OverallIterations: 137, TraceHistogramMax: 1, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 55.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9574 SdHoareTripleChecker+Valid, 29.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8084 mSDsluCounter, 7340 SdHoareTripleChecker+Invalid, 25.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6771 mSDsCounter, 1622 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53008 IncrementalHoareTripleChecker+Invalid, 54630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1622 mSolverCounterUnsat, 569 mSDtfsCounter, 53008 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1586 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1586 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3802 ImplicationChecksByTransitivity, 43.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1367occurred in iteration=104, InterpolantAutomatonStates: 1397, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 106.2s InterpolantComputationTime, 2375 NumberOfCodeBlocks, 2375 NumberOfCodeBlocksAsserted, 137 NumberOfCheckSat, 2238 ConstructedInterpolants, 0 QuantifiedInterpolants, 103808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 137 InterpolantComputations, 137 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 17:08:40,642 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