/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-ticket-6.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 09:00:01,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 09:00:01,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 09:00:01,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 09:00:01,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 09:00:01,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 09:00:01,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 09:00:01,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 09:00:01,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 09:00:01,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 09:00:01,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 09:00:01,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 09:00:01,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 09:00:01,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 09:00:01,258 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 09:00:01,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 09:00:01,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 09:00:01,259 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 09:00:01,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 09:00:01,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 09:00:01,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 09:00:01,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 09:00:01,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 09:00:01,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 09:00:01,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 09:00:01,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 09:00:01,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 09:00:01,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 09:00:01,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 09:00:01,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 09:00:01,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 09:00:01,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 09:00:01,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 09:00:01,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 09:00:01,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 09:00:01,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 09:00:01,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 09:00:01,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 09:00:01,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 09:00:01,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 09:00:01,264 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 09:00:01,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 09:00:01,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 09:00:01,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 09:00:01,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 09:00:01,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 09:00:01,518 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 09:00:01,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-ticket-6.wvr_bound2.c [2023-08-04 09:00:02,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 09:00:02,730 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 09:00:02,730 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-ticket-6.wvr_bound2.c [2023-08-04 09:00:02,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868e56eeb/6db5fadd753047c580a82310b1f8c0c0/FLAG6ea383a0c [2023-08-04 09:00:02,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868e56eeb/6db5fadd753047c580a82310b1f8c0c0 [2023-08-04 09:00:02,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 09:00:02,756 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 09:00:02,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 09:00:02,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 09:00:02,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 09:00:02,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:02,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1b5db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02, skipping insertion in model container [2023-08-04 09:00:02,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:02,800 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 09:00:02,932 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-ticket-6.wvr_bound2.c[4886,4899] [2023-08-04 09:00:02,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 09:00:02,942 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 09:00:02,970 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-ticket-6.wvr_bound2.c[4886,4899] [2023-08-04 09:00:02,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 09:00:02,978 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 09:00:02,979 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 09:00:02,984 INFO L206 MainTranslator]: Completed translation [2023-08-04 09:00:02,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02 WrapperNode [2023-08-04 09:00:02,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 09:00:02,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 09:00:02,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 09:00:02,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 09:00:02,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,030 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 384 [2023-08-04 09:00:03,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 09:00:03,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 09:00:03,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 09:00:03,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 09:00:03,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 09:00:03,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 09:00:03,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 09:00:03,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 09:00:03,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (1/1) ... [2023-08-04 09:00:03,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 09:00:03,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:00:03,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 09:00:03,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 09:00:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 09:00:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 09:00:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 09:00:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 09:00:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 09:00:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 09:00:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 09:00:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 09:00:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 09:00:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 09:00:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-04 09:00:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-04 09:00:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 09:00:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-04 09:00:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-04 09:00:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-04 09:00:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-04 09:00:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 09:00:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 09:00:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 09:00:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 09:00:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 09:00:03,136 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 09:00:03,242 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 09:00:03,245 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 09:00:03,581 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 09:00:03,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 09:00:03,660 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 09:00:03,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:00:03 BoogieIcfgContainer [2023-08-04 09:00:03,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 09:00:03,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 09:00:03,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 09:00:03,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 09:00:03,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 09:00:02" (1/3) ... [2023-08-04 09:00:03,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54517530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:00:03, skipping insertion in model container [2023-08-04 09:00:03,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:00:02" (2/3) ... [2023-08-04 09:00:03,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54517530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:00:03, skipping insertion in model container [2023-08-04 09:00:03,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:00:03" (3/3) ... [2023-08-04 09:00:03,670 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-ticket-6.wvr_bound2.c [2023-08-04 09:00:03,677 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 09:00:03,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 09:00:03,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 09:00:03,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 09:00:03,885 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-04 09:00:03,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 305 transitions, 748 flow [2023-08-04 09:00:05,094 INFO L124 PetriNetUnfolderBase]: 1727/7829 cut-off events. [2023-08-04 09:00:05,094 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2023-08-04 09:00:05,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 7829 events. 1727/7829 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 78670 event pairs, 0 based on Foata normal form. 0/6680 useless extension candidates. Maximal degree in co-relation 4434. Up to 193 conditions per place. [2023-08-04 09:00:05,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 305 transitions, 748 flow [2023-08-04 09:00:05,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 283 transitions, 692 flow [2023-08-04 09:00:05,168 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 09:00:05,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 283 transitions, 692 flow [2023-08-04 09:00:05,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 283 transitions, 692 flow [2023-08-04 09:00:05,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 283 transitions, 692 flow [2023-08-04 09:00:06,002 INFO L124 PetriNetUnfolderBase]: 1727/6742 cut-off events. [2023-08-04 09:00:06,002 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2023-08-04 09:00:06,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8027 conditions, 6742 events. 1727/6742 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 62718 event pairs, 0 based on Foata normal form. 0/5657 useless extension candidates. Maximal degree in co-relation 3860. Up to 193 conditions per place. [2023-08-04 09:00:06,135 INFO L119 LiptonReduction]: Number of co-enabled transitions 11232 [2023-08-04 09:00:11,848 INFO L134 LiptonReduction]: Checked pairs total: 86593 [2023-08-04 09:00:11,849 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-08-04 09:00:11,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 09:00:11,877 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@69c1becf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 09:00:11,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 09:00:11,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 09:00:11,899 INFO L124 PetriNetUnfolderBase]: 10/247 cut-off events. [2023-08-04 09:00:11,899 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 09:00:11,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:00:11,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:00:11,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:00:11,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:00:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -354519480, now seen corresponding path program 1 times [2023-08-04 09:00:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:00:11,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631487650] [2023-08-04 09:00:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:00:11,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:00:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:00:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 09:00:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:00:12,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631487650] [2023-08-04 09:00:12,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631487650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:00:12,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 09:00:12,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 09:00:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832927972] [2023-08-04 09:00:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:00:12,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:00:12,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:00:12,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:00:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 09:00:12,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 495 [2023-08-04 09:00:12,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 09:00:12,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:00:12,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 495 [2023-08-04 09:00:12,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:02:09,027 INFO L124 PetriNetUnfolderBase]: 1217533/1635854 cut-off events. [2023-08-04 09:02:09,028 INFO L125 PetriNetUnfolderBase]: For 159544/159544 co-relation queries the response was YES. [2023-08-04 09:02:14,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3288194 conditions, 1635854 events. 1217533/1635854 cut-off events. For 159544/159544 co-relation queries the response was YES. Maximal size of possible extension queue 42104. Compared 13746842 event pairs, 979823 based on Foata normal form. 0/1516802 useless extension candidates. Maximal degree in co-relation 2688178. Up to 1533577 conditions per place. [2023-08-04 09:02:22,776 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 98 selfloop transitions, 2 changer transitions 1/114 dead transitions. [2023-08-04 09:02:22,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 556 flow [2023-08-04 09:02:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:02:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:02:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-08-04 09:02:22,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2023-08-04 09:02:22,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-08-04 09:02:22,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-08-04 09:02:22,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:02:22,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-08-04 09:02:22,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 09:02:22,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 09:02:22,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 09:02:22,843 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 346 flow. Second operand 3 states and 780 transitions. [2023-08-04 09:02:22,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 556 flow [2023-08-04 09:02:26,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 514 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-04 09:02:26,060 INFO L231 Difference]: Finished difference. Result has 84 places, 110 transitions, 312 flow [2023-08-04 09:02:26,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=84, PETRI_TRANSITIONS=110} [2023-08-04 09:02:26,066 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2023-08-04 09:02:26,066 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 110 transitions, 312 flow [2023-08-04 09:02:26,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 09:02:26,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:02:26,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:02:26,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 09:02:26,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:02:26,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:02:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -23932072, now seen corresponding path program 1 times [2023-08-04 09:02:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:02:26,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248900449] [2023-08-04 09:02:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:02:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:02:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:02:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 09:02:26,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:02:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248900449] [2023-08-04 09:02:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248900449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:02:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899888872] [2023-08-04 09:02:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:02:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:02:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:02:26,235 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)