./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-poker-hand-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/weaver/chl-poker-hand-symm.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-poker-hand-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:50:46,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:50:46,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:50:46,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:50:46,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:50:46,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:50:46,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:50:46,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:50:46,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:50:46,729 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:50:46,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:50:46,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:50:46,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:50:46,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:50:46,731 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:50:46,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:50:46,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:50:46,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:50:46,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:50:46,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:50:46,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:50:46,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:50:46,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:50:46,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:50:46,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:50:46,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:50:46,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:50:46,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:50:46,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:50:46,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:50:46,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:50:46,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:50:46,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:50:46,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:50:46,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:50:46,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:50:46,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:50:46,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:50:46,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:50:46,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:50:46,740 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:50:46,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:50:46,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:50:46,740 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:50:46,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:50:47,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:50:47,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:50:47,019 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:50:47,024 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:50:47,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-poker-hand-symm.wvr.yml/witness.yml [2024-01-31 16:50:47,383 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:50:47,384 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:50:47,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-01-31 16:50:48,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:50:48,709 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:50:48,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-01-31 16:50:48,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504dfcdf6/73934d0c99c54652abcda09930f55890/FLAG5f62c7fd8 [2024-01-31 16:50:48,734 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504dfcdf6/73934d0c99c54652abcda09930f55890 [2024-01-31 16:50:48,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:50:48,736 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:50:48,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:50:48,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:50:48,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:50:48,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:50:47" (1/2) ... [2024-01-31 16:50:48,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0d9114 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:48, skipping insertion in model container [2024-01-31 16:50:48,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:50:47" (1/2) ... [2024-01-31 16:50:48,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72dd7ce4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:48, skipping insertion in model container [2024-01-31 16:50:48,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:50:48" (2/2) ... [2024-01-31 16:50:48,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0d9114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:48, skipping insertion in model container [2024-01-31 16:50:48,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:50:48" (2/2) ... [2024-01-31 16:50:48,747 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:50:49,211 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:50:49,237 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:50:49,570 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-01-31 16:50:49,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:50:49,593 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:50:49,675 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-01-31 16:50:49,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:50:49,699 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:50:49,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49 WrapperNode [2024-01-31 16:50:49,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:50:49,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:50:49,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:50:49,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:50:49,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,837 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1555 [2024-01-31 16:50:49,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:50:49,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:50:49,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:50:49,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:50:49,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,906 INFO L175 MemorySlicer]: Split 190 memory accesses to 4 slices as follows [184, 2, 2, 2]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0]. The 10 writes are split as follows [8, 0, 1, 1]. [2024-01-31 16:50:49,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:50:49,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:50:49,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:50:49,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:50:49,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (1/1) ... [2024-01-31 16:50:49,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:50:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:50,017 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) [2024-01-31 16:50:50,044 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 [2024-01-31 16:50:50,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:50:50,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:50:50,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:50:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:50:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:50:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:50:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:50:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:50:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:50:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:50:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:50:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:50:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:50:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:50:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:50:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:50:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:50:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:50:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:50:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:50:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:50:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:50:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:50:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:50:50,067 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:50:50,251 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:50:50,253 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:50:51,692 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:50:51,694 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:50:53,150 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:50:53,151 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-01-31 16:50:53,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:50:53 BoogieIcfgContainer [2024-01-31 16:50:53,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:50:53,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:50:53,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:50:53,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:50:53,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:50:47" (1/4) ... [2024-01-31 16:50:53,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135ea4a7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:50:53, skipping insertion in model container [2024-01-31 16:50:53,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:50:48" (2/4) ... [2024-01-31 16:50:53,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135ea4a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:50:53, skipping insertion in model container [2024-01-31 16:50:53,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:49" (3/4) ... [2024-01-31 16:50:53,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135ea4a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:50:53, skipping insertion in model container [2024-01-31 16:50:53,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:50:53" (4/4) ... [2024-01-31 16:50:53,162 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-01-31 16:50:53,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:50:53,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:50:53,179 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:50:53,415 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:50:53,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 95 transitions, 204 flow [2024-01-31 16:50:53,540 INFO L124 PetriNetUnfolderBase]: 28/93 cut-off events. [2024-01-31 16:50:53,541 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:50:53,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 28/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 247 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2024-01-31 16:50:53,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 95 transitions, 204 flow [2024-01-31 16:50:53,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 92 transitions, 196 flow [2024-01-31 16:50:53,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:50:53,563 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;@4f888bfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:50:53,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 16:50:53,616 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:50:53,617 INFO L124 PetriNetUnfolderBase]: 28/91 cut-off events. [2024-01-31 16:50:53,617 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:50:53,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:53,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:53,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:50:53,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:53,623 INFO L85 PathProgramCache]: Analyzing trace with hash -757129655, now seen corresponding path program 1 times [2024-01-31 16:50:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:53,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514311824] [2024-01-31 16:50:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:50:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:54,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514311824] [2024-01-31 16:50:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514311824] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:54,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:50:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32146693] [2024-01-31 16:50:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:50:54,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:54,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:50:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:50:54,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:50:54,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 92 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:54,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:54,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:50:54,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:55,455 INFO L124 PetriNetUnfolderBase]: 2193/3358 cut-off events. [2024-01-31 16:50:55,456 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-01-31 16:50:55,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6695 conditions, 3358 events. 2193/3358 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17125 event pairs, 1449 based on Foata normal form. 184/2786 useless extension candidates. Maximal degree in co-relation 6413. Up to 3261 conditions per place. [2024-01-31 16:50:55,475 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-01-31 16:50:55,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 370 flow [2024-01-31 16:50:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:50:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:50:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-31 16:50:55,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070175438596491 [2024-01-31 16:50:55,489 INFO L175 Difference]: Start difference. First operand has 71 places, 92 transitions, 196 flow. Second operand 3 states and 116 transitions. [2024-01-31 16:50:55,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 370 flow [2024-01-31 16:50:55,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:50:55,497 INFO L231 Difference]: Finished difference. Result has 70 places, 92 transitions, 222 flow [2024-01-31 16:50:55,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=92} [2024-01-31 16:50:55,502 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2024-01-31 16:50:55,502 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 92 transitions, 222 flow [2024-01-31 16:50:55,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:55,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:55,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:55,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:50:55,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:50:55,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1408613932, now seen corresponding path program 1 times [2024-01-31 16:50:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174937588] [2024-01-31 16:50:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:55,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:50:55,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:55,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174937588] [2024-01-31 16:50:55,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174937588] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:55,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:55,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:50:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493741672] [2024-01-31 16:50:55,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:55,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:50:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:50:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:50:55,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:50:55,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 92 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:55,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:55,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:50:55,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:56,667 INFO L124 PetriNetUnfolderBase]: 2193/3360 cut-off events. [2024-01-31 16:50:56,668 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-31 16:50:56,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 3360 events. 2193/3360 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17146 event pairs, 1449 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 6621. Up to 3265 conditions per place. [2024-01-31 16:50:56,683 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 85 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-01-31 16:50:56,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 404 flow [2024-01-31 16:50:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:50:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:50:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-01-31 16:50:56,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37894736842105264 [2024-01-31 16:50:56,686 INFO L175 Difference]: Start difference. First operand has 70 places, 92 transitions, 222 flow. Second operand 3 states and 108 transitions. [2024-01-31 16:50:56,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 404 flow [2024-01-31 16:50:56,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:56,689 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 236 flow [2024-01-31 16:50:56,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2024-01-31 16:50:56,690 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2024-01-31 16:50:56,690 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 236 flow [2024-01-31 16:50:56,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:56,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:56,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:56,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:50:56,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:50:56,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2096760260, now seen corresponding path program 1 times [2024-01-31 16:50:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:56,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513154850] [2024-01-31 16:50:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:56,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:50:56,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:56,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513154850] [2024-01-31 16:50:56,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513154850] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:56,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027235891] [2024-01-31 16:50:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:56,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:56,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:56,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:56,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:50:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:57,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-31 16:50:57,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:50:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:50:57,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:50:57,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027235891] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:57,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:50:57,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-01-31 16:50:57,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727899292] [2024-01-31 16:50:57,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:57,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:50:57,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:50:57,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:57,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:50:57,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:57,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:57,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:50:57,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:58,388 INFO L124 PetriNetUnfolderBase]: 2193/3362 cut-off events. [2024-01-31 16:50:58,388 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-31 16:50:58,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6680 conditions, 3362 events. 2193/3362 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17135 event pairs, 1449 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 6623. Up to 3265 conditions per place. [2024-01-31 16:50:58,404 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 83 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2024-01-31 16:50:58,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 422 flow [2024-01-31 16:50:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:50:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:50:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-01-31 16:50:58,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2024-01-31 16:50:58,406 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 236 flow. Second operand 3 states and 110 transitions. [2024-01-31 16:50:58,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 422 flow [2024-01-31 16:50:58,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:58,409 INFO L231 Difference]: Finished difference. Result has 74 places, 96 transitions, 266 flow [2024-01-31 16:50:58,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=74, PETRI_TRANSITIONS=96} [2024-01-31 16:50:58,410 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2024-01-31 16:50:58,410 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 96 transitions, 266 flow [2024-01-31 16:50:58,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:58,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:58,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:58,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 16:50:58,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:58,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:50:58,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash 539258706, now seen corresponding path program 1 times [2024-01-31 16:50:58,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:58,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981359097] [2024-01-31 16:50:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:58,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:50:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981359097] [2024-01-31 16:50:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981359097] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108364882] [2024-01-31 16:50:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:58,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:58,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:58,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:58,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:50:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:59,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 16:50:59,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:50:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:50:59,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:50:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:50:59,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108364882] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:50:59,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:50:59,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-01-31 16:50:59,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780449292] [2024-01-31 16:50:59,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:50:59,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:50:59,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:50:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:50:59,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:50:59,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 96 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:59,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:59,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:50:59,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:00,357 INFO L124 PetriNetUnfolderBase]: 2193/3386 cut-off events. [2024-01-31 16:51:00,357 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-01-31 16:51:00,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 3386 events. 2193/3386 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17129 event pairs, 1449 based on Foata normal form. 12/2646 useless extension candidates. Maximal degree in co-relation 6644. Up to 3261 conditions per place. [2024-01-31 16:51:00,372 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 75 selfloop transitions, 40 changer transitions 0/120 dead transitions. [2024-01-31 16:51:00,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 592 flow [2024-01-31 16:51:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:51:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:51:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-01-31 16:51:00,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2565789473684211 [2024-01-31 16:51:00,375 INFO L175 Difference]: Start difference. First operand has 74 places, 96 transitions, 266 flow. Second operand 8 states and 195 transitions. [2024-01-31 16:51:00,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 592 flow [2024-01-31 16:51:00,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:00,379 INFO L231 Difference]: Finished difference. Result has 83 places, 120 transitions, 496 flow [2024-01-31 16:51:00,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=496, PETRI_PLACES=83, PETRI_TRANSITIONS=120} [2024-01-31 16:51:00,380 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 12 predicate places. [2024-01-31 16:51:00,380 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 120 transitions, 496 flow [2024-01-31 16:51:00,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:00,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:00,381 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:00,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:00,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-01-31 16:51:00,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:00,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:00,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1613009607, now seen corresponding path program 2 times [2024-01-31 16:51:00,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:00,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264825103] [2024-01-31 16:51:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-31 16:51:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264825103] [2024-01-31 16:51:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264825103] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202346782] [2024-01-31 16:51:00,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:51:00,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:00,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:00,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:00,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:51:01,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 16:51:01,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:51:01,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:51:01,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:01,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:51:01,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-01-31 16:51:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-01-31 16:51:01,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:51:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202346782] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:01,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:51:01,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-01-31 16:51:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921235234] [2024-01-31 16:51:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:01,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:51:01,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:01,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 120 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:01,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:01,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:01,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:03,062 INFO L124 PetriNetUnfolderBase]: 3307/5204 cut-off events. [2024-01-31 16:51:03,062 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:51:03,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10347 conditions, 5204 events. 3307/5204 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 29358 event pairs, 1167 based on Foata normal form. 1/4097 useless extension candidates. Maximal degree in co-relation 10173. Up to 2481 conditions per place. [2024-01-31 16:51:03,085 INFO L140 encePairwiseOnDemand]: 74/95 looper letters, 185 selfloop transitions, 22 changer transitions 10/222 dead transitions. [2024-01-31 16:51:03,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 222 transitions, 1140 flow [2024-01-31 16:51:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:51:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:51:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 222 transitions. [2024-01-31 16:51:03,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673684210526316 [2024-01-31 16:51:03,087 INFO L175 Difference]: Start difference. First operand has 83 places, 120 transitions, 496 flow. Second operand 5 states and 222 transitions. [2024-01-31 16:51:03,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 222 transitions, 1140 flow [2024-01-31 16:51:03,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 222 transitions, 1044 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-01-31 16:51:03,094 INFO L231 Difference]: Finished difference. Result has 86 places, 138 transitions, 543 flow [2024-01-31 16:51:03,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=543, PETRI_PLACES=86, PETRI_TRANSITIONS=138} [2024-01-31 16:51:03,095 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 15 predicate places. [2024-01-31 16:51:03,095 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 138 transitions, 543 flow [2024-01-31 16:51:03,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:03,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:03,096 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:03,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:03,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:03,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:03,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1529072303, now seen corresponding path program 3 times [2024-01-31 16:51:03,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:03,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296806116] [2024-01-31 16:51:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-31 16:51:03,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296806116] [2024-01-31 16:51:03,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296806116] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954316919] [2024-01-31 16:51:03,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:51:03,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:03,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:03,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:03,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:51:04,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 16:51:04,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:51:04,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:51:04,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:04,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:51:04,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-01-31 16:51:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-01-31 16:51:04,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:51:04,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954316919] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:04,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:51:04,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-01-31 16:51:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077894573] [2024-01-31 16:51:04,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:04,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:51:04,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:04,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 138 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:04,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:04,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:04,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:05,676 INFO L124 PetriNetUnfolderBase]: 3413/5405 cut-off events. [2024-01-31 16:51:05,677 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-01-31 16:51:05,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12836 conditions, 5405 events. 3413/5405 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 31127 event pairs, 1175 based on Foata normal form. 1/4264 useless extension candidates. Maximal degree in co-relation 12804. Up to 2783 conditions per place. [2024-01-31 16:51:05,696 INFO L140 encePairwiseOnDemand]: 74/95 looper letters, 183 selfloop transitions, 22 changer transitions 10/220 dead transitions. [2024-01-31 16:51:05,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 220 transitions, 1164 flow [2024-01-31 16:51:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:51:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:51:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2024-01-31 16:51:05,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-01-31 16:51:05,698 INFO L175 Difference]: Start difference. First operand has 86 places, 138 transitions, 543 flow. Second operand 5 states and 220 transitions. [2024-01-31 16:51:05,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 220 transitions, 1164 flow [2024-01-31 16:51:05,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 220 transitions, 1156 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:05,712 INFO L231 Difference]: Finished difference. Result has 91 places, 138 transitions, 593 flow [2024-01-31 16:51:05,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=5, PETRI_FLOW=593, PETRI_PLACES=91, PETRI_TRANSITIONS=138} [2024-01-31 16:51:05,715 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2024-01-31 16:51:05,715 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 138 transitions, 593 flow [2024-01-31 16:51:05,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:05,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:05,716 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:05,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:05,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:05,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:05,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:05,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2102513933, now seen corresponding path program 1 times [2024-01-31 16:51:05,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:05,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227450709] [2024-01-31 16:51:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:05,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-31 16:51:06,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227450709] [2024-01-31 16:51:06,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227450709] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386541107] [2024-01-31 16:51:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:06,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:06,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 16:51:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:06,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 16:51:06,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-31 16:51:06,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:51:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-31 16:51:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386541107] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:51:06,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:51:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-31 16:51:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169994438] [2024-01-31 16:51:06,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:51:06,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 16:51:06,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:06,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 16:51:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-01-31 16:51:06,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:06,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 138 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:06,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:06,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:06,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:08,488 INFO L124 PetriNetUnfolderBase]: 3399/5370 cut-off events. [2024-01-31 16:51:08,488 INFO L125 PetriNetUnfolderBase]: For 2338/2338 co-relation queries the response was YES. [2024-01-31 16:51:08,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13585 conditions, 5370 events. 3399/5370 cut-off events. For 2338/2338 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30609 event pairs, 2343 based on Foata normal form. 1/4223 useless extension candidates. Maximal degree in co-relation 13550. Up to 5119 conditions per place. [2024-01-31 16:51:08,514 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 93 selfloop transitions, 44 changer transitions 0/142 dead transitions. [2024-01-31 16:51:08,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 142 transitions, 887 flow [2024-01-31 16:51:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:51:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:51:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-01-31 16:51:08,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19138755980861244 [2024-01-31 16:51:08,522 INFO L175 Difference]: Start difference. First operand has 91 places, 138 transitions, 593 flow. Second operand 11 states and 200 transitions. [2024-01-31 16:51:08,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 142 transitions, 887 flow [2024-01-31 16:51:08,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 142 transitions, 862 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:51:08,535 INFO L231 Difference]: Finished difference. Result has 99 places, 142 transitions, 694 flow [2024-01-31 16:51:08,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=694, PETRI_PLACES=99, PETRI_TRANSITIONS=142} [2024-01-31 16:51:08,537 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 28 predicate places. [2024-01-31 16:51:08,537 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 142 transitions, 694 flow [2024-01-31 16:51:08,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:08,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:08,537 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:08,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:08,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:08,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash -918468135, now seen corresponding path program 2 times [2024-01-31 16:51:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706977873] [2024-01-31 16:51:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-31 16:51:09,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:09,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706977873] [2024-01-31 16:51:09,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706977873] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:09,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763234928] [2024-01-31 16:51:09,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:51:09,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:09,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:09,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 16:51:09,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 16:51:09,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:51:09,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-31 16:51:09,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-01-31 16:51:09,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:51:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763234928] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:09,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:51:09,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-01-31 16:51:09,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660227354] [2024-01-31 16:51:09,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:09,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:09,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:09,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:51:09,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:09,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 142 transitions, 694 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:09,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:09,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:09,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:10,739 INFO L124 PetriNetUnfolderBase]: 3523/5733 cut-off events. [2024-01-31 16:51:10,739 INFO L125 PetriNetUnfolderBase]: For 1140/1140 co-relation queries the response was YES. [2024-01-31 16:51:10,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14138 conditions, 5733 events. 3523/5733 cut-off events. For 1140/1140 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 34240 event pairs, 929 based on Foata normal form. 58/4607 useless extension candidates. Maximal degree in co-relation 13892. Up to 4057 conditions per place. [2024-01-31 16:51:10,759 INFO L140 encePairwiseOnDemand]: 79/95 looper letters, 164 selfloop transitions, 20 changer transitions 2/191 dead transitions. [2024-01-31 16:51:10,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1200 flow [2024-01-31 16:51:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:10,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-01-31 16:51:10,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-31 16:51:10,761 INFO L175 Difference]: Start difference. First operand has 99 places, 142 transitions, 694 flow. Second operand 3 states and 152 transitions. [2024-01-31 16:51:10,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1200 flow [2024-01-31 16:51:10,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 191 transitions, 1124 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:51:10,770 INFO L231 Difference]: Finished difference. Result has 97 places, 158 transitions, 804 flow [2024-01-31 16:51:10,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=97, PETRI_TRANSITIONS=158} [2024-01-31 16:51:10,771 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2024-01-31 16:51:10,771 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 158 transitions, 804 flow [2024-01-31 16:51:10,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:10,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:10,772 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:10,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:10,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:10,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:10,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1049247705, now seen corresponding path program 3 times [2024-01-31 16:51:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:10,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541777421] [2024-01-31 16:51:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:10,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-31 16:51:11,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:11,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541777421] [2024-01-31 16:51:11,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541777421] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569551701] [2024-01-31 16:51:11,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:51:11,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:11,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:11,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:11,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 16:51:11,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 16:51:11,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:51:11,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:51:11,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-01-31 16:51:11,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:51:11,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569551701] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:11,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:51:11,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-01-31 16:51:11,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661929801] [2024-01-31 16:51:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:11,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:11,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:11,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:11,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:51:11,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:11,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 158 transitions, 804 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:11,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:11,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:11,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:13,046 INFO L124 PetriNetUnfolderBase]: 3473/5584 cut-off events. [2024-01-31 16:51:13,046 INFO L125 PetriNetUnfolderBase]: For 2784/2784 co-relation queries the response was YES. [2024-01-31 16:51:13,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14995 conditions, 5584 events. 3473/5584 cut-off events. For 2784/2784 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 32771 event pairs, 2289 based on Foata normal form. 50/4440 useless extension candidates. Maximal degree in co-relation 14781. Up to 5039 conditions per place. [2024-01-31 16:51:13,067 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 143 selfloop transitions, 0 changer transitions 37/185 dead transitions. [2024-01-31 16:51:13,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 185 transitions, 1184 flow [2024-01-31 16:51:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-01-31 16:51:13,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-01-31 16:51:13,070 INFO L175 Difference]: Start difference. First operand has 97 places, 158 transitions, 804 flow. Second operand 3 states and 147 transitions. [2024-01-31 16:51:13,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 185 transitions, 1184 flow [2024-01-31 16:51:13,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 185 transitions, 1156 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:51:13,088 INFO L231 Difference]: Finished difference. Result has 98 places, 148 transitions, 714 flow [2024-01-31 16:51:13,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=714, PETRI_PLACES=98, PETRI_TRANSITIONS=148} [2024-01-31 16:51:13,090 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 27 predicate places. [2024-01-31 16:51:13,090 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 148 transitions, 714 flow [2024-01-31 16:51:13,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:13,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:13,090 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:13,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:13,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:13,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:13,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash -792678275, now seen corresponding path program 1 times [2024-01-31 16:51:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:13,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284956286] [2024-01-31 16:51:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:13,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-01-31 16:51:13,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:13,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284956286] [2024-01-31 16:51:13,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284956286] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:13,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973331972] [2024-01-31 16:51:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:51:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:51:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:51:13,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:13,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 148 transitions, 714 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:13,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:13,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:13,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:15,182 INFO L124 PetriNetUnfolderBase]: 3432/5594 cut-off events. [2024-01-31 16:51:15,182 INFO L125 PetriNetUnfolderBase]: For 1890/1890 co-relation queries the response was YES. [2024-01-31 16:51:15,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14565 conditions, 5594 events. 3432/5594 cut-off events. For 1890/1890 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33347 event pairs, 1590 based on Foata normal form. 3/4537 useless extension candidates. Maximal degree in co-relation 14548. Up to 2852 conditions per place. [2024-01-31 16:51:15,205 INFO L140 encePairwiseOnDemand]: 81/95 looper letters, 167 selfloop transitions, 31 changer transitions 5/208 dead transitions. [2024-01-31 16:51:15,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 208 transitions, 1303 flow [2024-01-31 16:51:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-01-31 16:51:15,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649122807017544 [2024-01-31 16:51:15,207 INFO L175 Difference]: Start difference. First operand has 98 places, 148 transitions, 714 flow. Second operand 3 states and 161 transitions. [2024-01-31 16:51:15,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 208 transitions, 1303 flow [2024-01-31 16:51:15,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 208 transitions, 1295 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:15,219 INFO L231 Difference]: Finished difference. Result has 97 places, 160 transitions, 885 flow [2024-01-31 16:51:15,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=885, PETRI_PLACES=97, PETRI_TRANSITIONS=160} [2024-01-31 16:51:15,220 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2024-01-31 16:51:15,220 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 160 transitions, 885 flow [2024-01-31 16:51:15,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:15,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:15,221 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:51:15,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:15,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1040130693, now seen corresponding path program 1 times [2024-01-31 16:51:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:15,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603400789] [2024-01-31 16:51:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-31 16:51:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603400789] [2024-01-31 16:51:15,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603400789] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444640823] [2024-01-31 16:51:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:15,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:15,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 16:51:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:16,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:51:16,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-31 16:51:16,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:51:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-31 16:51:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444640823] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:51:16,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:51:16,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-01-31 16:51:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112349158] [2024-01-31 16:51:16,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:51:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 16:51:16,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 16:51:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2024-01-31 16:51:16,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:16,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 160 transitions, 885 flow. Second operand has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:16,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:16,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:16,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:17,693 INFO L124 PetriNetUnfolderBase]: 3432/5574 cut-off events. [2024-01-31 16:51:17,693 INFO L125 PetriNetUnfolderBase]: For 3428/3428 co-relation queries the response was YES. [2024-01-31 16:51:17,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16070 conditions, 5574 events. 3432/5574 cut-off events. For 3428/3428 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 33057 event pairs, 2450 based on Foata normal form. 14/4528 useless extension candidates. Maximal degree in co-relation 16052. Up to 5321 conditions per place. [2024-01-31 16:51:17,716 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 111 selfloop transitions, 58 changer transitions 0/174 dead transitions. [2024-01-31 16:51:17,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1335 flow [2024-01-31 16:51:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:51:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:51:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 241 transitions. [2024-01-31 16:51:17,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.181203007518797 [2024-01-31 16:51:17,719 INFO L175 Difference]: Start difference. First operand has 97 places, 160 transitions, 885 flow. Second operand 14 states and 241 transitions. [2024-01-31 16:51:17,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1335 flow [2024-01-31 16:51:17,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 174 transitions, 1304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:17,735 INFO L231 Difference]: Finished difference. Result has 116 places, 174 transitions, 1180 flow [2024-01-31 16:51:17,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1180, PETRI_PLACES=116, PETRI_TRANSITIONS=174} [2024-01-31 16:51:17,736 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 45 predicate places. [2024-01-31 16:51:17,736 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 174 transitions, 1180 flow [2024-01-31 16:51:17,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:17,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:17,736 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:17,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-01-31 16:51:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-01-31 16:51:17,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:17,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1824652107, now seen corresponding path program 2 times [2024-01-31 16:51:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820311795] [2024-01-31 16:51:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-31 16:51:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820311795] [2024-01-31 16:51:18,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820311795] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670709971] [2024-01-31 16:51:18,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:51:18,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:18,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:18,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:18,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-31 16:51:19,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 16:51:19,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:51:19,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 16:51:19,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-01-31 16:51:19,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:51:19,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670709971] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:19,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:51:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-01-31 16:51:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802331951] [2024-01-31 16:51:19,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-01-31 16:51:19,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:19,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 174 transitions, 1180 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:19,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:19,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:19,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:20,278 INFO L124 PetriNetUnfolderBase]: 3452/5867 cut-off events. [2024-01-31 16:51:20,279 INFO L125 PetriNetUnfolderBase]: For 3747/3747 co-relation queries the response was YES. [2024-01-31 16:51:20,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15654 conditions, 5867 events. 3452/5867 cut-off events. For 3747/3747 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37081 event pairs, 1608 based on Foata normal form. 220/4973 useless extension candidates. Maximal degree in co-relation 15629. Up to 3176 conditions per place. [2024-01-31 16:51:20,306 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 196 selfloop transitions, 4 changer transitions 20/225 dead transitions. [2024-01-31 16:51:20,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 225 transitions, 1787 flow [2024-01-31 16:51:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-01-31 16:51:20,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-01-31 16:51:20,308 INFO L175 Difference]: Start difference. First operand has 116 places, 174 transitions, 1180 flow. Second operand 3 states and 153 transitions. [2024-01-31 16:51:20,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 225 transitions, 1787 flow [2024-01-31 16:51:20,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 225 transitions, 1707 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-01-31 16:51:20,324 INFO L231 Difference]: Finished difference. Result has 118 places, 176 transitions, 1176 flow [2024-01-31 16:51:20,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1176, PETRI_PLACES=118, PETRI_TRANSITIONS=176} [2024-01-31 16:51:20,325 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 47 predicate places. [2024-01-31 16:51:20,325 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 176 transitions, 1176 flow [2024-01-31 16:51:20,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:20,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:20,326 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:20,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-01-31 16:51:20,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:20,543 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:20,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1444583237, now seen corresponding path program 3 times [2024-01-31 16:51:20,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:20,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082778482] [2024-01-31 16:51:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:20,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-31 16:51:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082778482] [2024-01-31 16:51:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082778482] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28995756] [2024-01-31 16:51:21,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:51:21,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:21,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:21,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:21,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-31 16:51:21,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 16:51:21,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:51:21,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 16:51:21,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-01-31 16:51:21,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:51:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28995756] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:51:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-01-31 16:51:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475228917] [2024-01-31 16:51:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:21,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-01-31 16:51:21,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:21,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 176 transitions, 1176 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:21,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:21,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:21,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:22,739 INFO L124 PetriNetUnfolderBase]: 3068/5170 cut-off events. [2024-01-31 16:51:22,739 INFO L125 PetriNetUnfolderBase]: For 3796/3796 co-relation queries the response was YES. [2024-01-31 16:51:22,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14200 conditions, 5170 events. 3068/5170 cut-off events. For 3796/3796 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31394 event pairs, 1554 based on Foata normal form. 44/4184 useless extension candidates. Maximal degree in co-relation 14174. Up to 2703 conditions per place. [2024-01-31 16:51:22,760 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 190 selfloop transitions, 10 changer transitions 2/207 dead transitions. [2024-01-31 16:51:22,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 207 transitions, 1635 flow [2024-01-31 16:51:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-01-31 16:51:22,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-01-31 16:51:22,765 INFO L175 Difference]: Start difference. First operand has 118 places, 176 transitions, 1176 flow. Second operand 3 states and 145 transitions. [2024-01-31 16:51:22,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 207 transitions, 1635 flow [2024-01-31 16:51:22,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 207 transitions, 1629 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:22,781 INFO L231 Difference]: Finished difference. Result has 119 places, 174 transitions, 1174 flow [2024-01-31 16:51:22,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1174, PETRI_PLACES=119, PETRI_TRANSITIONS=174} [2024-01-31 16:51:22,782 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 48 predicate places. [2024-01-31 16:51:22,782 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 174 transitions, 1174 flow [2024-01-31 16:51:22,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:22,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:22,783 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:22,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:22,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-31 16:51:22,996 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:22,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:22,997 INFO L85 PathProgramCache]: Analyzing trace with hash 232863245, now seen corresponding path program 1 times [2024-01-31 16:51:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990522304] [2024-01-31 16:51:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-31 16:51:23,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:23,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990522304] [2024-01-31 16:51:23,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990522304] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:23,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132034595] [2024-01-31 16:51:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:23,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:23,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:23,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-31 16:51:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:24,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 16:51:24,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-31 16:51:24,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:51:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-31 16:51:24,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132034595] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:51:24,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:51:24,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-01-31 16:51:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809819481] [2024-01-31 16:51:24,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:51:24,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-31 16:51:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-31 16:51:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2024-01-31 16:51:24,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:24,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 174 transitions, 1174 flow. Second operand has 29 states, 29 states have (on average 9.275862068965518) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:24,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:24,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:24,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:25,731 INFO L124 PetriNetUnfolderBase]: 3068/5147 cut-off events. [2024-01-31 16:51:25,732 INFO L125 PetriNetUnfolderBase]: For 4181/4181 co-relation queries the response was YES. [2024-01-31 16:51:25,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14413 conditions, 5147 events. 3068/5147 cut-off events. For 4181/4181 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31004 event pairs, 2428 based on Foata normal form. 2/4117 useless extension candidates. Maximal degree in co-relation 14387. Up to 4917 conditions per place. [2024-01-31 16:51:25,750 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 111 selfloop transitions, 60 changer transitions 0/176 dead transitions. [2024-01-31 16:51:25,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 176 transitions, 1536 flow [2024-01-31 16:51:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-31 16:51:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-31 16:51:25,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 273 transitions. [2024-01-31 16:51:25,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1436842105263158 [2024-01-31 16:51:25,752 INFO L175 Difference]: Start difference. First operand has 119 places, 174 transitions, 1174 flow. Second operand 20 states and 273 transitions. [2024-01-31 16:51:25,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 176 transitions, 1536 flow [2024-01-31 16:51:25,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 176 transitions, 1526 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:25,768 INFO L231 Difference]: Finished difference. Result has 138 places, 176 transitions, 1314 flow [2024-01-31 16:51:25,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1314, PETRI_PLACES=138, PETRI_TRANSITIONS=176} [2024-01-31 16:51:25,769 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 67 predicate places. [2024-01-31 16:51:25,769 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 176 transitions, 1314 flow [2024-01-31 16:51:25,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.275862068965518) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:25,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:25,769 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:25,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:25,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-31 16:51:25,988 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:25,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1829076989, now seen corresponding path program 2 times [2024-01-31 16:51:25,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:25,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618098807] [2024-01-31 16:51:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:25,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:26,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:26,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618098807] [2024-01-31 16:51:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618098807] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:26,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:26,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145965550] [2024-01-31 16:51:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:26,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:51:26,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:26,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 176 transitions, 1314 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:26,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:26,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:26,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:27,752 INFO L124 PetriNetUnfolderBase]: 3214/5462 cut-off events. [2024-01-31 16:51:27,752 INFO L125 PetriNetUnfolderBase]: For 3500/3500 co-relation queries the response was YES. [2024-01-31 16:51:27,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15217 conditions, 5462 events. 3214/5462 cut-off events. For 3500/3500 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 33927 event pairs, 1082 based on Foata normal form. 1/4395 useless extension candidates. Maximal degree in co-relation 15190. Up to 3138 conditions per place. [2024-01-31 16:51:27,774 INFO L140 encePairwiseOnDemand]: 76/95 looper letters, 209 selfloop transitions, 28 changer transitions 9/251 dead transitions. [2024-01-31 16:51:27,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 251 transitions, 2021 flow [2024-01-31 16:51:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:51:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:51:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-01-31 16:51:27,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357894736842105 [2024-01-31 16:51:27,776 INFO L175 Difference]: Start difference. First operand has 138 places, 176 transitions, 1314 flow. Second operand 5 states and 207 transitions. [2024-01-31 16:51:27,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 251 transitions, 2021 flow [2024-01-31 16:51:27,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 251 transitions, 1873 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-01-31 16:51:27,792 INFO L231 Difference]: Finished difference. Result has 131 places, 176 transitions, 1232 flow [2024-01-31 16:51:27,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1232, PETRI_PLACES=131, PETRI_TRANSITIONS=176} [2024-01-31 16:51:27,793 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 60 predicate places. [2024-01-31 16:51:27,793 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 176 transitions, 1232 flow [2024-01-31 16:51:27,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:27,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:27,794 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:27,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:51:27,794 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:27,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash 89349149, now seen corresponding path program 3 times [2024-01-31 16:51:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:27,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640597234] [2024-01-31 16:51:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640597234] [2024-01-31 16:51:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640597234] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:28,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:28,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849543701] [2024-01-31 16:51:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:28,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:51:28,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:28,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 176 transitions, 1232 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:28,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:28,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:28,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:29,796 INFO L124 PetriNetUnfolderBase]: 3304/5646 cut-off events. [2024-01-31 16:51:29,796 INFO L125 PetriNetUnfolderBase]: For 5467/5467 co-relation queries the response was YES. [2024-01-31 16:51:29,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16143 conditions, 5646 events. 3304/5646 cut-off events. For 5467/5467 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35525 event pairs, 1090 based on Foata normal form. 1/4555 useless extension candidates. Maximal degree in co-relation 16113. Up to 3398 conditions per place. [2024-01-31 16:51:29,819 INFO L140 encePairwiseOnDemand]: 76/95 looper letters, 207 selfloop transitions, 28 changer transitions 9/249 dead transitions. [2024-01-31 16:51:29,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 249 transitions, 1933 flow [2024-01-31 16:51:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:51:29,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:51:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-01-31 16:51:29,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-01-31 16:51:29,821 INFO L175 Difference]: Start difference. First operand has 131 places, 176 transitions, 1232 flow. Second operand 5 states and 205 transitions. [2024-01-31 16:51:29,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 249 transitions, 1933 flow [2024-01-31 16:51:29,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 249 transitions, 1900 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:51:29,841 INFO L231 Difference]: Finished difference. Result has 134 places, 176 transitions, 1267 flow [2024-01-31 16:51:29,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1267, PETRI_PLACES=134, PETRI_TRANSITIONS=176} [2024-01-31 16:51:29,841 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 63 predicate places. [2024-01-31 16:51:29,842 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 176 transitions, 1267 flow [2024-01-31 16:51:29,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:29,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:29,842 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:51:29,842 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:29,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash -776373455, now seen corresponding path program 1 times [2024-01-31 16:51:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:29,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851855111] [2024-01-31 16:51:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:29,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851855111] [2024-01-31 16:51:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851855111] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:30,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73328598] [2024-01-31 16:51:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:30,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:30,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:30,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 176 transitions, 1267 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:30,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:30,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:30,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:32,199 INFO L124 PetriNetUnfolderBase]: 3396/5932 cut-off events. [2024-01-31 16:51:32,199 INFO L125 PetriNetUnfolderBase]: For 6260/6260 co-relation queries the response was YES. [2024-01-31 16:51:32,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17004 conditions, 5932 events. 3396/5932 cut-off events. For 6260/6260 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 38408 event pairs, 1898 based on Foata normal form. 88/4880 useless extension candidates. Maximal degree in co-relation 16972. Up to 3415 conditions per place. [2024-01-31 16:51:32,230 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 183 selfloop transitions, 16 changer transitions 7/211 dead transitions. [2024-01-31 16:51:32,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 211 transitions, 1756 flow [2024-01-31 16:51:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-01-31 16:51:32,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017543859649123 [2024-01-31 16:51:32,232 INFO L175 Difference]: Start difference. First operand has 134 places, 176 transitions, 1267 flow. Second operand 3 states and 143 transitions. [2024-01-31 16:51:32,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 211 transitions, 1756 flow [2024-01-31 16:51:32,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 211 transitions, 1727 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:51:32,254 INFO L231 Difference]: Finished difference. Result has 135 places, 178 transitions, 1328 flow [2024-01-31 16:51:32,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1328, PETRI_PLACES=135, PETRI_TRANSITIONS=178} [2024-01-31 16:51:32,255 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 64 predicate places. [2024-01-31 16:51:32,255 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 178 transitions, 1328 flow [2024-01-31 16:51:32,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:32,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:32,256 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:32,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:51:32,256 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:32,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1575123569, now seen corresponding path program 2 times [2024-01-31 16:51:32,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:32,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335754650] [2024-01-31 16:51:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:32,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:33,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335754650] [2024-01-31 16:51:33,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335754650] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:33,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:33,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:33,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363309788] [2024-01-31 16:51:33,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:33,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:33,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:33,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:33,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:33,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:33,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 178 transitions, 1328 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:33,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:33,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:33,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:34,376 INFO L124 PetriNetUnfolderBase]: 3232/5600 cut-off events. [2024-01-31 16:51:34,376 INFO L125 PetriNetUnfolderBase]: For 6153/6153 co-relation queries the response was YES. [2024-01-31 16:51:34,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16507 conditions, 5600 events. 3232/5600 cut-off events. For 6153/6153 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 35806 event pairs, 2420 based on Foata normal form. 60/4538 useless extension candidates. Maximal degree in co-relation 16474. Up to 4703 conditions per place. [2024-01-31 16:51:34,401 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 180 selfloop transitions, 4 changer transitions 8/197 dead transitions. [2024-01-31 16:51:34,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 197 transitions, 1611 flow [2024-01-31 16:51:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-01-31 16:51:34,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017543859649123 [2024-01-31 16:51:34,404 INFO L175 Difference]: Start difference. First operand has 135 places, 178 transitions, 1328 flow. Second operand 3 states and 143 transitions. [2024-01-31 16:51:34,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 197 transitions, 1611 flow [2024-01-31 16:51:34,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 197 transitions, 1605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:34,422 INFO L231 Difference]: Finished difference. Result has 136 places, 164 transitions, 1158 flow [2024-01-31 16:51:34,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1158, PETRI_PLACES=136, PETRI_TRANSITIONS=164} [2024-01-31 16:51:34,422 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 65 predicate places. [2024-01-31 16:51:34,422 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 164 transitions, 1158 flow [2024-01-31 16:51:34,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:34,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:34,423 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:34,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:51:34,423 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:34,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1834024394, now seen corresponding path program 1 times [2024-01-31 16:51:34,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:34,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622732929] [2024-01-31 16:51:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:34,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622732929] [2024-01-31 16:51:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622732929] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:35,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:35,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:35,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37242622] [2024-01-31 16:51:35,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:35,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:35,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:35,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:35,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:35,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 164 transitions, 1158 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:35,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:35,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:35,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:36,396 INFO L124 PetriNetUnfolderBase]: 3412/5989 cut-off events. [2024-01-31 16:51:36,396 INFO L125 PetriNetUnfolderBase]: For 5171/5171 co-relation queries the response was YES. [2024-01-31 16:51:36,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17445 conditions, 5989 events. 3412/5989 cut-off events. For 5171/5171 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 39555 event pairs, 2590 based on Foata normal form. 30/4837 useless extension candidates. Maximal degree in co-relation 17412. Up to 4945 conditions per place. [2024-01-31 16:51:36,423 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 179 selfloop transitions, 8 changer transitions 13/205 dead transitions. [2024-01-31 16:51:36,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 205 transitions, 1665 flow [2024-01-31 16:51:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-01-31 16:51:36,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228070175438596 [2024-01-31 16:51:36,424 INFO L175 Difference]: Start difference. First operand has 136 places, 164 transitions, 1158 flow. Second operand 3 states and 149 transitions. [2024-01-31 16:51:36,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 205 transitions, 1665 flow [2024-01-31 16:51:36,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 205 transitions, 1661 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:36,439 INFO L231 Difference]: Finished difference. Result has 139 places, 162 transitions, 1176 flow [2024-01-31 16:51:36,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1176, PETRI_PLACES=139, PETRI_TRANSITIONS=162} [2024-01-31 16:51:36,439 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 68 predicate places. [2024-01-31 16:51:36,439 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 162 transitions, 1176 flow [2024-01-31 16:51:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:36,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:36,440 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:51:36,440 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:36,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1778453820, now seen corresponding path program 2 times [2024-01-31 16:51:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:36,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126431451] [2024-01-31 16:51:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:36,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:37,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126431451] [2024-01-31 16:51:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126431451] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:37,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:37,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:37,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306655269] [2024-01-31 16:51:37,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:37,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:37,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:37,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:37,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 162 transitions, 1176 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:37,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:37,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:37,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:38,532 INFO L124 PetriNetUnfolderBase]: 3118/5495 cut-off events. [2024-01-31 16:51:38,532 INFO L125 PetriNetUnfolderBase]: For 5685/5685 co-relation queries the response was YES. [2024-01-31 16:51:38,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15842 conditions, 5495 events. 3118/5495 cut-off events. For 5685/5685 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 35848 event pairs, 1736 based on Foata normal form. 54/4429 useless extension candidates. Maximal degree in co-relation 15808. Up to 3045 conditions per place. [2024-01-31 16:51:38,550 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 169 selfloop transitions, 6 changer transitions 9/189 dead transitions. [2024-01-31 16:51:38,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 189 transitions, 1515 flow [2024-01-31 16:51:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-01-31 16:51:38,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-01-31 16:51:38,552 INFO L175 Difference]: Start difference. First operand has 139 places, 162 transitions, 1176 flow. Second operand 3 states and 141 transitions. [2024-01-31 16:51:38,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 189 transitions, 1515 flow [2024-01-31 16:51:38,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 189 transitions, 1463 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 16:51:38,567 INFO L231 Difference]: Finished difference. Result has 136 places, 154 transitions, 1032 flow [2024-01-31 16:51:38,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1032, PETRI_PLACES=136, PETRI_TRANSITIONS=154} [2024-01-31 16:51:38,567 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 65 predicate places. [2024-01-31 16:51:38,568 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 154 transitions, 1032 flow [2024-01-31 16:51:38,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:38,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:38,568 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:38,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:51:38,568 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:38,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -139242315, now seen corresponding path program 1 times [2024-01-31 16:51:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334823502] [2024-01-31 16:51:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:38,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334823502] [2024-01-31 16:51:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334823502] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293894687] [2024-01-31 16:51:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:38,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:38,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:38,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:38,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:38,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:38,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 154 transitions, 1032 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:38,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:38,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:38,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:39,667 INFO L124 PetriNetUnfolderBase]: 2843/5054 cut-off events. [2024-01-31 16:51:39,667 INFO L125 PetriNetUnfolderBase]: For 4426/4426 co-relation queries the response was YES. [2024-01-31 16:51:39,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13733 conditions, 5054 events. 2843/5054 cut-off events. For 4426/4426 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 32663 event pairs, 1877 based on Foata normal form. 34/4162 useless extension candidates. Maximal degree in co-relation 13701. Up to 3385 conditions per place. [2024-01-31 16:51:39,689 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 158 selfloop transitions, 6 changer transitions 14/183 dead transitions. [2024-01-31 16:51:39,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 183 transitions, 1411 flow [2024-01-31 16:51:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-01-31 16:51:39,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-01-31 16:51:39,690 INFO L175 Difference]: Start difference. First operand has 136 places, 154 transitions, 1032 flow. Second operand 3 states and 132 transitions. [2024-01-31 16:51:39,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 183 transitions, 1411 flow [2024-01-31 16:51:39,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1359 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-31 16:51:39,702 INFO L231 Difference]: Finished difference. Result has 132 places, 152 transitions, 958 flow [2024-01-31 16:51:39,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=958, PETRI_PLACES=132, PETRI_TRANSITIONS=152} [2024-01-31 16:51:39,703 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 61 predicate places. [2024-01-31 16:51:39,703 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 152 transitions, 958 flow [2024-01-31 16:51:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:39,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:39,703 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:39,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:51:39,704 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:39,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1906824071, now seen corresponding path program 2 times [2024-01-31 16:51:39,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:39,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748045707] [2024-01-31 16:51:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:39,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:39,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748045707] [2024-01-31 16:51:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748045707] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:39,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:39,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388999651] [2024-01-31 16:51:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:39,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:39,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:39,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 152 transitions, 958 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:39,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:39,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:39,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:40,919 INFO L124 PetriNetUnfolderBase]: 2781/4902 cut-off events. [2024-01-31 16:51:40,919 INFO L125 PetriNetUnfolderBase]: For 2713/2713 co-relation queries the response was YES. [2024-01-31 16:51:40,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12698 conditions, 4902 events. 2781/4902 cut-off events. For 2713/2713 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31320 event pairs, 2331 based on Foata normal form. 10/3994 useless extension candidates. Maximal degree in co-relation 12670. Up to 4444 conditions per place. [2024-01-31 16:51:40,940 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 141 selfloop transitions, 0 changer transitions 33/179 dead transitions. [2024-01-31 16:51:40,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 179 transitions, 1348 flow [2024-01-31 16:51:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-01-31 16:51:40,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456140350877193 [2024-01-31 16:51:40,942 INFO L175 Difference]: Start difference. First operand has 132 places, 152 transitions, 958 flow. Second operand 3 states and 127 transitions. [2024-01-31 16:51:40,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 179 transitions, 1348 flow [2024-01-31 16:51:40,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 179 transitions, 1334 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:51:40,953 INFO L231 Difference]: Finished difference. Result has 131 places, 146 transitions, 894 flow [2024-01-31 16:51:40,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=894, PETRI_PLACES=131, PETRI_TRANSITIONS=146} [2024-01-31 16:51:40,953 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 60 predicate places. [2024-01-31 16:51:40,953 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 146 transitions, 894 flow [2024-01-31 16:51:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:40,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:40,954 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:51:40,954 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:40,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1856465229, now seen corresponding path program 1 times [2024-01-31 16:51:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:40,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938329693] [2024-01-31 16:51:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-01-31 16:51:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938329693] [2024-01-31 16:51:41,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938329693] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:41,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:41,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:41,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561698917] [2024-01-31 16:51:41,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:41,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:41,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:41,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:41,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:41,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:41,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 146 transitions, 894 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:41,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:41,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:41,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:42,205 INFO L124 PetriNetUnfolderBase]: 2349/4169 cut-off events. [2024-01-31 16:51:42,205 INFO L125 PetriNetUnfolderBase]: For 1772/1772 co-relation queries the response was YES. [2024-01-31 16:51:42,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10584 conditions, 4169 events. 2349/4169 cut-off events. For 1772/1772 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 25796 event pairs, 1849 based on Foata normal form. 46/3511 useless extension candidates. Maximal degree in co-relation 10557. Up to 3526 conditions per place. [2024-01-31 16:51:42,217 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 151 selfloop transitions, 4 changer transitions 9/169 dead transitions. [2024-01-31 16:51:42,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 169 transitions, 1278 flow [2024-01-31 16:51:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-01-31 16:51:42,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41403508771929826 [2024-01-31 16:51:42,219 INFO L175 Difference]: Start difference. First operand has 131 places, 146 transitions, 894 flow. Second operand 3 states and 118 transitions. [2024-01-31 16:51:42,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 169 transitions, 1278 flow [2024-01-31 16:51:42,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 169 transitions, 1274 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:51:42,225 INFO L231 Difference]: Finished difference. Result has 129 places, 145 transitions, 904 flow [2024-01-31 16:51:42,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=904, PETRI_PLACES=129, PETRI_TRANSITIONS=145} [2024-01-31 16:51:42,226 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 58 predicate places. [2024-01-31 16:51:42,226 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 145 transitions, 904 flow [2024-01-31 16:51:42,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:42,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:42,226 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:42,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:51:42,227 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:42,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1908628050, now seen corresponding path program 1 times [2024-01-31 16:51:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:42,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592675661] [2024-01-31 16:51:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-01-31 16:51:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592675661] [2024-01-31 16:51:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592675661] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:51:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625767056] [2024-01-31 16:51:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:51:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:51:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:51:42,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:42,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 145 transitions, 904 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:42,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:42,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:42,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:43,284 INFO L124 PetriNetUnfolderBase]: 2278/4050 cut-off events. [2024-01-31 16:51:43,284 INFO L125 PetriNetUnfolderBase]: For 1949/1949 co-relation queries the response was YES. [2024-01-31 16:51:43,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10483 conditions, 4050 events. 2278/4050 cut-off events. For 1949/1949 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24850 event pairs, 1743 based on Foata normal form. 40/3394 useless extension candidates. Maximal degree in co-relation 10454. Up to 3252 conditions per place. [2024-01-31 16:51:43,300 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 153 selfloop transitions, 3 changer transitions 9/170 dead transitions. [2024-01-31 16:51:43,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 170 transitions, 1294 flow [2024-01-31 16:51:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 16:51:43,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-01-31 16:51:43,301 INFO L175 Difference]: Start difference. First operand has 129 places, 145 transitions, 904 flow. Second operand 3 states and 120 transitions. [2024-01-31 16:51:43,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 170 transitions, 1294 flow [2024-01-31 16:51:43,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 170 transitions, 1276 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:51:43,307 INFO L231 Difference]: Finished difference. Result has 130 places, 144 transitions, 892 flow [2024-01-31 16:51:43,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=892, PETRI_PLACES=130, PETRI_TRANSITIONS=144} [2024-01-31 16:51:43,307 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 59 predicate places. [2024-01-31 16:51:43,308 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 144 transitions, 892 flow [2024-01-31 16:51:43,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:43,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:43,308 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:43,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:51:43,308 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:43,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1974537622, now seen corresponding path program 1 times [2024-01-31 16:51:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350462795] [2024-01-31 16:51:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:43,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350462795] [2024-01-31 16:51:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350462795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:43,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:43,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118880919] [2024-01-31 16:51:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:43,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:51:43,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:43,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 892 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:43,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:43,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:43,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:44,340 INFO L124 PetriNetUnfolderBase]: 2284/4058 cut-off events. [2024-01-31 16:51:44,341 INFO L125 PetriNetUnfolderBase]: For 1673/1673 co-relation queries the response was YES. [2024-01-31 16:51:44,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10621 conditions, 4058 events. 2284/4058 cut-off events. For 1673/1673 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24952 event pairs, 1906 based on Foata normal form. 1/3363 useless extension candidates. Maximal degree in co-relation 10591. Up to 3680 conditions per place. [2024-01-31 16:51:44,358 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 143 selfloop transitions, 1 changer transitions 20/169 dead transitions. [2024-01-31 16:51:44,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 169 transitions, 1275 flow [2024-01-31 16:51:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:51:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:51:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-01-31 16:51:44,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33157894736842103 [2024-01-31 16:51:44,359 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 892 flow. Second operand 4 states and 126 transitions. [2024-01-31 16:51:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 169 transitions, 1275 flow [2024-01-31 16:51:44,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 169 transitions, 1272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:44,365 INFO L231 Difference]: Finished difference. Result has 133 places, 142 transitions, 876 flow [2024-01-31 16:51:44,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=876, PETRI_PLACES=133, PETRI_TRANSITIONS=142} [2024-01-31 16:51:44,366 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 62 predicate places. [2024-01-31 16:51:44,366 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 142 transitions, 876 flow [2024-01-31 16:51:44,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:44,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:44,366 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:44,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:51:44,367 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:44,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1077163272, now seen corresponding path program 2 times [2024-01-31 16:51:44,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:44,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011308626] [2024-01-31 16:51:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:44,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:44,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011308626] [2024-01-31 16:51:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011308626] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362088570] [2024-01-31 16:51:44,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:44,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:44,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:44,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:44,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:51:44,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:44,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 142 transitions, 876 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:44,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:44,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:44,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:45,459 INFO L124 PetriNetUnfolderBase]: 2186/3875 cut-off events. [2024-01-31 16:51:45,459 INFO L125 PetriNetUnfolderBase]: For 1565/1565 co-relation queries the response was YES. [2024-01-31 16:51:45,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10024 conditions, 3875 events. 2186/3875 cut-off events. For 1565/1565 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23488 event pairs, 1844 based on Foata normal form. 1/3198 useless extension candidates. Maximal degree in co-relation 9993. Up to 3574 conditions per place. [2024-01-31 16:51:45,471 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 132 selfloop transitions, 0 changer transitions 23/160 dead transitions. [2024-01-31 16:51:45,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 160 transitions, 1224 flow [2024-01-31 16:51:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:51:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:51:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-01-31 16:51:45,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3105263157894737 [2024-01-31 16:51:45,472 INFO L175 Difference]: Start difference. First operand has 133 places, 142 transitions, 876 flow. Second operand 4 states and 118 transitions. [2024-01-31 16:51:45,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 160 transitions, 1224 flow [2024-01-31 16:51:45,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 160 transitions, 1221 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:51:45,477 INFO L231 Difference]: Finished difference. Result has 134 places, 137 transitions, 851 flow [2024-01-31 16:51:45,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=851, PETRI_PLACES=134, PETRI_TRANSITIONS=137} [2024-01-31 16:51:45,478 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 63 predicate places. [2024-01-31 16:51:45,478 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 137 transitions, 851 flow [2024-01-31 16:51:45,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:45,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:45,479 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:45,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:51:45,479 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:45,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -246614611, now seen corresponding path program 1 times [2024-01-31 16:51:45,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:45,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702513145] [2024-01-31 16:51:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:45,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:45,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:45,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702513145] [2024-01-31 16:51:45,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702513145] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:45,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:45,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:45,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478225605] [2024-01-31 16:51:45,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:45,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:51:45,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:45,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 137 transitions, 851 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:45,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:45,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:45,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:46,383 INFO L124 PetriNetUnfolderBase]: 1839/3294 cut-off events. [2024-01-31 16:51:46,383 INFO L125 PetriNetUnfolderBase]: For 1330/1330 co-relation queries the response was YES. [2024-01-31 16:51:46,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 3294 events. 1839/3294 cut-off events. For 1330/1330 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19310 event pairs, 1499 based on Foata normal form. 1/2791 useless extension candidates. Maximal degree in co-relation 8466. Up to 2951 conditions per place. [2024-01-31 16:51:46,396 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 136 selfloop transitions, 1 changer transitions 18/160 dead transitions. [2024-01-31 16:51:46,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 160 transitions, 1214 flow [2024-01-31 16:51:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:51:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:51:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-01-31 16:51:46,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3131578947368421 [2024-01-31 16:51:46,398 INFO L175 Difference]: Start difference. First operand has 134 places, 137 transitions, 851 flow. Second operand 4 states and 119 transitions. [2024-01-31 16:51:46,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 160 transitions, 1214 flow [2024-01-31 16:51:46,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 160 transitions, 1202 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 16:51:46,403 INFO L231 Difference]: Finished difference. Result has 128 places, 135 transitions, 823 flow [2024-01-31 16:51:46,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=823, PETRI_PLACES=128, PETRI_TRANSITIONS=135} [2024-01-31 16:51:46,404 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 57 predicate places. [2024-01-31 16:51:46,404 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 135 transitions, 823 flow [2024-01-31 16:51:46,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:46,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:46,405 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:46,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:51:46,405 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:46,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:46,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1002429891, now seen corresponding path program 2 times [2024-01-31 16:51:46,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:46,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911356874] [2024-01-31 16:51:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:46,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:46,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:46,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911356874] [2024-01-31 16:51:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911356874] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:46,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066796200] [2024-01-31 16:51:46,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:46,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:51:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:51:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:51:46,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:46,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 135 transitions, 823 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:46,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:46,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:46,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:47,296 INFO L124 PetriNetUnfolderBase]: 1757/3139 cut-off events. [2024-01-31 16:51:47,296 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2024-01-31 16:51:47,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7965 conditions, 3139 events. 1757/3139 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18183 event pairs, 1443 based on Foata normal form. 1/2648 useless extension candidates. Maximal degree in co-relation 7933. Up to 2855 conditions per place. [2024-01-31 16:51:47,307 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 121 selfloop transitions, 0 changer transitions 26/152 dead transitions. [2024-01-31 16:51:47,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 152 transitions, 1153 flow [2024-01-31 16:51:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:51:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:51:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-31 16:51:47,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29473684210526313 [2024-01-31 16:51:47,308 INFO L175 Difference]: Start difference. First operand has 128 places, 135 transitions, 823 flow. Second operand 4 states and 112 transitions. [2024-01-31 16:51:47,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 152 transitions, 1153 flow [2024-01-31 16:51:47,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 152 transitions, 1150 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:51:47,314 INFO L231 Difference]: Finished difference. Result has 129 places, 126 transitions, 785 flow [2024-01-31 16:51:47,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=785, PETRI_PLACES=129, PETRI_TRANSITIONS=126} [2024-01-31 16:51:47,315 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 58 predicate places. [2024-01-31 16:51:47,315 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 785 flow [2024-01-31 16:51:47,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:47,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:47,315 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:47,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:51:47,316 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:47,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2030437419, now seen corresponding path program 1 times [2024-01-31 16:51:47,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:47,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159283631] [2024-01-31 16:51:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:51:47,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:47,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159283631] [2024-01-31 16:51:47,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159283631] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:51:47,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:51:47,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:51:47,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990975807] [2024-01-31 16:51:47,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:51:47,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:51:47,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:47,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:51:47,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:51:47,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-31 16:51:47,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 785 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:47,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:47,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-31 16:51:47,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:48,445 INFO L124 PetriNetUnfolderBase]: 1253/2306 cut-off events. [2024-01-31 16:51:48,445 INFO L125 PetriNetUnfolderBase]: For 893/893 co-relation queries the response was YES. [2024-01-31 16:51:48,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5898 conditions, 2306 events. 1253/2306 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12553 event pairs, 539 based on Foata normal form. 1/1983 useless extension candidates. Maximal degree in co-relation 5866. Up to 1231 conditions per place. [2024-01-31 16:51:48,455 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 143 selfloop transitions, 7 changer transitions 5/160 dead transitions. [2024-01-31 16:51:48,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 1190 flow [2024-01-31 16:51:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:51:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:51:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-01-31 16:51:48,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-01-31 16:51:48,456 INFO L175 Difference]: Start difference. First operand has 129 places, 126 transitions, 785 flow. Second operand 3 states and 115 transitions. [2024-01-31 16:51:48,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 160 transitions, 1190 flow [2024-01-31 16:51:48,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 160 transitions, 1178 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:51:48,460 INFO L231 Difference]: Finished difference. Result has 117 places, 128 transitions, 812 flow [2024-01-31 16:51:48,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=812, PETRI_PLACES=117, PETRI_TRANSITIONS=128} [2024-01-31 16:51:48,461 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 46 predicate places. [2024-01-31 16:51:48,461 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 128 transitions, 812 flow [2024-01-31 16:51:48,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:48,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:48,462 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:51:48,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:51:48,462 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:51:48,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2118103896, now seen corresponding path program 1 times [2024-01-31 16:51:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:48,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461791868] [2024-01-31 16:51:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:48,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-01-31 16:51:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461791868] [2024-01-31 16:51:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461791868] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721683285] [2024-01-31 16:51:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:54,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:54,084 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:54,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-31 16:51:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:54,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 29 conjunts are in the unsatisfiable core [2024-01-31 16:51:54,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:58,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:51:58,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 258 treesize of output 1123 [2024-01-31 16:52:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-31 16:52:25,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... Killed by 15