./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:09:02,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:09:02,618 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:09:02,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:09:02,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:09:02,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:09:02,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:09:02,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:09:02,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:09:02,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:09:02,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:09:02,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:09:02,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:09:02,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:09:02,664 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:09:02,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:09:02,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:09:02,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:09:02,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:09:02,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:09:02,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:09:02,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:09:02,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:09:02,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:09:02,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:09:02,670 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:09:02,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:09:02,671 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:09:02,671 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:09:02,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:09:02,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:09:02,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:09:02,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:09:02,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:09:02,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:09:02,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:09:02,673 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:09:02,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:09:02,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:09:02,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:09:02,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:09:02,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:09:02,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2024-11-10 10:09:02,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:09:02,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:09:02,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:09:02,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:09:02,967 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:09:02,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-11-10 10:09:04,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:09:04,722 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:09:04,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-11-10 10:09:04,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599820035/6b964bfabd9f4b5ba6740e0477e42598/FLAGb51349593 [2024-11-10 10:09:04,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599820035/6b964bfabd9f4b5ba6740e0477e42598 [2024-11-10 10:09:04,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:09:04,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:09:04,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:09:04,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:09:04,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:09:04,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:09:04" (1/1) ... [2024-11-10 10:09:04,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd045f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:04, skipping insertion in model container [2024-11-10 10:09:04,793 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:09:04" (1/1) ... [2024-11-10 10:09:04,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:09:05,222 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30837,30850] [2024-11-10 10:09:05,232 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31185,31198] [2024-11-10 10:09:05,236 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31448,31461] [2024-11-10 10:09:05,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:09:05,259 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:09:05,309 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30837,30850] [2024-11-10 10:09:05,313 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31185,31198] [2024-11-10 10:09:05,314 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31448,31461] [2024-11-10 10:09:05,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:09:05,363 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:09:05,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05 WrapperNode [2024-11-10 10:09:05,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:09:05,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:09:05,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:09:05,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:09:05,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,421 INFO L138 Inliner]: procedures = 178, calls = 35, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 141 [2024-11-10 10:09:05,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:09:05,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:09:05,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:09:05,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:09:05,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,441 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,468 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 6, 3]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-10 10:09:05,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,480 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:09:05,489 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:09:05,490 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:09:05,490 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:09:05,491 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (1/1) ... [2024-11-10 10:09:05,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:09:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:09:05,528 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) [2024-11-10 10:09:05,535 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 [2024-11-10 10:09:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:09:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:09:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 10:09:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 10:09:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 10:09:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:09:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:09:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 10:09:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:09:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:09:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 10:09:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 10:09:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:09:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:09:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:09:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:09:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:09:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:09:05,575 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:09:05,701 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:09:05,703 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:09:05,898 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L728: havoc PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset; [2024-11-10 10:09:05,898 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L728-1: SUMMARY for call ULTIMATE.dealloc(PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset); srcloc: null [2024-11-10 10:09:05,923 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:09:05,923 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:09:06,068 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:09:06,068 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:09:06,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:09:06 BoogieIcfgContainer [2024-11-10 10:09:06,069 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:09:06,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:09:06,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:09:06,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:09:06,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:09:04" (1/3) ... [2024-11-10 10:09:06,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de8eea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:09:06, skipping insertion in model container [2024-11-10 10:09:06,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:09:05" (2/3) ... [2024-11-10 10:09:06,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de8eea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:09:06, skipping insertion in model container [2024-11-10 10:09:06,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:09:06" (3/3) ... [2024-11-10 10:09:06,080 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2024-11-10 10:09:06,094 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:09:06,094 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-10 10:09:06,094 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:09:06,158 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:09:06,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 57 transitions, 118 flow [2024-11-10 10:09:06,234 INFO L124 PetriNetUnfolderBase]: 14/62 cut-off events. [2024-11-10 10:09:06,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:09:06,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 14/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2024-11-10 10:09:06,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 57 transitions, 118 flow [2024-11-10 10:09:06,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 57 transitions, 118 flow [2024-11-10 10:09:06,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:09:06,260 INFO L333 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, 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;@925766d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:09:06,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 10:09:06,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:09:06,266 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-10 10:09:06,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:09:06,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:06,267 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:09:06,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 10:09:06,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1866997, now seen corresponding path program 1 times [2024-11-10 10:09:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:06,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233390955] [2024-11-10 10:09:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:06,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:09:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:06,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:09:06,460 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:09:06,462 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 10:09:06,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-11-10 10:09:06,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-11-10 10:09:06,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-11-10 10:09:06,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-11-10 10:09:06,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-11-10 10:09:06,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-10 10:09:06,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:09:06,467 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:09:06,472 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:09:06,472 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:09:06,531 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:09:06,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 106 transitions, 222 flow [2024-11-10 10:09:06,574 INFO L124 PetriNetUnfolderBase]: 27/117 cut-off events. [2024-11-10 10:09:06,574 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:09:06,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 117 events. 27/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 332 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2024-11-10 10:09:06,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 106 transitions, 222 flow [2024-11-10 10:09:06,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 106 transitions, 222 flow [2024-11-10 10:09:06,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:09:06,583 INFO L333 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, 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;@925766d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:09:06,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-10 10:09:06,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:09:06,597 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-11-10 10:09:06,597 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:09:06,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:06,598 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:09:06,599 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-10 10:09:06,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1236313704, now seen corresponding path program 1 times [2024-11-10 10:09:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049590427] [2024-11-10 10:09:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:06,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:09:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:06,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:09:06,715 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:09:06,715 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-10 10:09:06,715 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2024-11-10 10:09:06,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2024-11-10 10:09:06,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2024-11-10 10:09:06,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2024-11-10 10:09:06,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2024-11-10 10:09:06,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2024-11-10 10:09:06,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2024-11-10 10:09:06,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2024-11-10 10:09:06,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2024-11-10 10:09:06,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:09:06,738 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:09:06,739 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:09:06,739 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:09:06,814 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:09:06,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 155 transitions, 328 flow [2024-11-10 10:09:06,866 INFO L124 PetriNetUnfolderBase]: 40/172 cut-off events. [2024-11-10 10:09:06,866 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 10:09:06,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 40/172 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 574 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2024-11-10 10:09:06,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 155 transitions, 328 flow [2024-11-10 10:09:06,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 155 transitions, 328 flow [2024-11-10 10:09:06,881 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:09:06,882 INFO L333 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, 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;@925766d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:09:06,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-10 10:09:06,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:09:06,898 INFO L124 PetriNetUnfolderBase]: 11/71 cut-off events. [2024-11-10 10:09:06,899 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:09:06,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:06,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:06,899 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-10 10:09:06,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash 685897438, now seen corresponding path program 1 times [2024-11-10 10:09:06,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:06,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298680483] [2024-11-10 10:09:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298680483] [2024-11-10 10:09:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298680483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:09:07,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:09:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:09:07,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761401147] [2024-11-10 10:09:07,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:09:07,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:09:07,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:09:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:09:07,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 155 [2024-11-10 10:09:07,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 155 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:07,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:07,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 155 [2024-11-10 10:09:07,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:09:16,943 INFO L124 PetriNetUnfolderBase]: 62865/107007 cut-off events. [2024-11-10 10:09:16,943 INFO L125 PetriNetUnfolderBase]: For 3183/3183 co-relation queries the response was YES. [2024-11-10 10:09:17,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190629 conditions, 107007 events. 62865/107007 cut-off events. For 3183/3183 co-relation queries the response was YES. Maximal size of possible extension queue 2643. Compared 1020879 event pairs, 53730 based on Foata normal form. 30418/127048 useless extension candidates. Maximal degree in co-relation 50729. Up to 82115 conditions per place. [2024-11-10 10:09:17,909 INFO L140 encePairwiseOnDemand]: 129/155 looper letters, 63 selfloop transitions, 0 changer transitions 0/125 dead transitions. [2024-11-10 10:09:17,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 394 flow [2024-11-10 10:09:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:09:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:09:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 219 transitions. [2024-11-10 10:09:17,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7064516129032258 [2024-11-10 10:09:17,927 INFO L175 Difference]: Start difference. First operand has 125 places, 155 transitions, 328 flow. Second operand 2 states and 219 transitions. [2024-11-10 10:09:17,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 394 flow [2024-11-10 10:09:17,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 392 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 10:09:17,946 INFO L231 Difference]: Finished difference. Result has 121 places, 125 transitions, 266 flow [2024-11-10 10:09:17,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=266, PETRI_PLACES=121, PETRI_TRANSITIONS=125} [2024-11-10 10:09:17,955 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, -4 predicate places. [2024-11-10 10:09:17,955 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 125 transitions, 266 flow [2024-11-10 10:09:17,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:17,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:17,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:17,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:09:17,956 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-10 10:09:17,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:17,957 INFO L85 PathProgramCache]: Analyzing trace with hash -33009730, now seen corresponding path program 1 times [2024-11-10 10:09:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:17,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392860790] [2024-11-10 10:09:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:18,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:18,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392860790] [2024-11-10 10:09:18,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392860790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:09:18,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:09:18,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:09:18,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620011911] [2024-11-10 10:09:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:09:18,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:09:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:09:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:09:18,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 155 [2024-11-10 10:09:18,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 125 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:18,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:18,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 155 [2024-11-10 10:09:18,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:09:30,979 INFO L124 PetriNetUnfolderBase]: 102005/169675 cut-off events. [2024-11-10 10:09:30,979 INFO L125 PetriNetUnfolderBase]: For 2028/2028 co-relation queries the response was YES. [2024-11-10 10:09:31,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304793 conditions, 169675 events. 102005/169675 cut-off events. For 2028/2028 co-relation queries the response was YES. Maximal size of possible extension queue 4719. Compared 1665678 event pairs, 43840 based on Foata normal form. 0/155769 useless extension candidates. Maximal degree in co-relation 304787. Up to 79031 conditions per place. [2024-11-10 10:09:32,288 INFO L140 encePairwiseOnDemand]: 145/155 looper letters, 200 selfloop transitions, 15 changer transitions 0/274 dead transitions. [2024-11-10 10:09:32,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 274 transitions, 1019 flow [2024-11-10 10:09:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:09:32,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:09:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2024-11-10 10:09:32,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6735483870967742 [2024-11-10 10:09:32,293 INFO L175 Difference]: Start difference. First operand has 121 places, 125 transitions, 266 flow. Second operand 5 states and 522 transitions. [2024-11-10 10:09:32,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 274 transitions, 1019 flow [2024-11-10 10:09:32,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 274 transitions, 1019 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:09:32,304 INFO L231 Difference]: Finished difference. Result has 129 places, 139 transitions, 384 flow [2024-11-10 10:09:32,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=129, PETRI_TRANSITIONS=139} [2024-11-10 10:09:32,305 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 4 predicate places. [2024-11-10 10:09:32,306 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 139 transitions, 384 flow [2024-11-10 10:09:32,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:32,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:32,307 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:09:32,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:09:32,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-10 10:09:32,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1148671036, now seen corresponding path program 1 times [2024-11-10 10:09:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:32,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580403760] [2024-11-10 10:09:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:32,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:09:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:32,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:09:32,354 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:09:32,354 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-10 10:09:32,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2024-11-10 10:09:32,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2024-11-10 10:09:32,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2024-11-10 10:09:32,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2024-11-10 10:09:32,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2024-11-10 10:09:32,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2024-11-10 10:09:32,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2024-11-10 10:09:32,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2024-11-10 10:09:32,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2024-11-10 10:09:32,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2024-11-10 10:09:32,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2024-11-10 10:09:32,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2024-11-10 10:09:32,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:09:32,359 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 10:09:32,360 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:09:32,360 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:09:32,431 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:09:32,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 204 transitions, 436 flow [2024-11-10 10:09:32,478 INFO L124 PetriNetUnfolderBase]: 53/227 cut-off events. [2024-11-10 10:09:32,479 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 10:09:32,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 227 events. 53/227 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 839 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 198. Up to 10 conditions per place. [2024-11-10 10:09:32,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 204 transitions, 436 flow [2024-11-10 10:09:32,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 204 transitions, 436 flow [2024-11-10 10:09:32,491 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:09:32,495 INFO L333 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, 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;@925766d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:09:32,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-10 10:09:32,506 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:09:32,507 INFO L124 PetriNetUnfolderBase]: 11/71 cut-off events. [2024-11-10 10:09:32,507 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:09:32,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:32,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:32,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-10 10:09:32,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1898780970, now seen corresponding path program 1 times [2024-11-10 10:09:32,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:32,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16288632] [2024-11-10 10:09:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:32,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:32,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16288632] [2024-11-10 10:09:32,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16288632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:09:32,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:09:32,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:09:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5449065] [2024-11-10 10:09:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:09:32,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:09:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:09:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:09:32,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 204 [2024-11-10 10:09:32,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 204 transitions, 436 flow. Second operand has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:32,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:32,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 204 [2024-11-10 10:09:32,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand