/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/ldv-races_race-1_2-join_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:38:37,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:38:37,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:38:37,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:38:37,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:38:37,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:38:37,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:38:37,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:38:37,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:38:37,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:38:37,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:38:37,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:38:37,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:38:37,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:38:37,306 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:38:37,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:38:37,306 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:38:37,306 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:38:37,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:38:37,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:38:37,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:38:37,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:38:37,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:38:37,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:38:37,308 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:38:37,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:38:37,308 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:38:37,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:38:37,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:38:37,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:38:37,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:38:37,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:38:37,310 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:38:37,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:38:37,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:38:37,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:38:37,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:38:37,526 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:38:37,531 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:38:37,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_2-join_bound2.i [2023-08-04 04:38:38,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:38:38,920 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:38:38,920 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_2-join_bound2.i [2023-08-04 04:38:38,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17bbc452b/e63fb4e7b8a94b3d928ae9f82e8954ad/FLAGfab5e5ca9 [2023-08-04 04:38:38,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17bbc452b/e63fb4e7b8a94b3d928ae9f82e8954ad [2023-08-04 04:38:38,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:38:38,951 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:38:38,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:38:38,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:38:38,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:38:38,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:38:38" (1/1) ... [2023-08-04 04:38:38,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dcd3f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:38, skipping insertion in model container [2023-08-04 04:38:38,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:38:38" (1/1) ... [2023-08-04 04:38:39,001 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:38:39,508 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_2-join_bound2.i[76153,76166] [2023-08-04 04:38:39,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:38:39,537 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:38:39,551 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-04 04:38:39,553 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-04 04:38:39,568 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-04 04:38:39,590 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_2-join_bound2.i[76153,76166] [2023-08-04 04:38:39,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:38:39,733 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:38:39,733 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:38:39,738 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:38:39,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39 WrapperNode [2023-08-04 04:38:39,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:38:39,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:38:39,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:38:39,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:38:39,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,806 INFO L138 Inliner]: procedures = 482, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-08-04 04:38:39,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:38:39,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:38:39,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:38:39,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:38:39,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:38:39,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:38:39,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:38:39,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:38:39,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (1/1) ... [2023-08-04 04:38:39,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:38:39,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:38:39,890 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 04:38:39,903 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 04:38:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 04:38:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:38:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 04:38:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:38:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:38:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:38:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:38:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:38:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:38:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:38:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 04:38:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 04:38:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:38:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:38:39,941 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 04:38:40,183 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:38:40,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:38:40,364 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:38:40,387 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:38:40,387 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:38:40,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:38:40 BoogieIcfgContainer [2023-08-04 04:38:40,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:38:40,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:38:40,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:38:40,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:38:40,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:38:38" (1/3) ... [2023-08-04 04:38:40,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb068c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:38:40, skipping insertion in model container [2023-08-04 04:38:40,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:39" (2/3) ... [2023-08-04 04:38:40,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb068c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:38:40, skipping insertion in model container [2023-08-04 04:38:40,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:38:40" (3/3) ... [2023-08-04 04:38:40,399 INFO L112 eAbstractionObserver]: Analyzing ICFG ldv-races_race-1_2-join_bound2.i [2023-08-04 04:38:40,404 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:38:40,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:38:40,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-04 04:38:40,411 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:38:40,447 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:38:40,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:40,528 INFO L124 PetriNetUnfolderBase]: 12/149 cut-off events. [2023-08-04 04:38:40,528 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:40,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 149 events. 12/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 259 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-04 04:38:40,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:40,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:40,537 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:38:40,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:40,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:40,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:40,579 INFO L124 PetriNetUnfolderBase]: 8/124 cut-off events. [2023-08-04 04:38:40,579 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:40,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 8/124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 170 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-04 04:38:40,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 448 [2023-08-04 04:38:42,900 INFO L134 LiptonReduction]: Checked pairs total: 540 [2023-08-04 04:38:42,901 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-04 04:38:42,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:38:42,913 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;@4b2fe9cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:38:42,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:38:42,914 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:38:42,915 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:38:42,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:42,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:42,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:38:42,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:42,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:42,918 INFO L85 PathProgramCache]: Analyzing trace with hash 428, now seen corresponding path program 1 times [2023-08-04 04:38:42,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:42,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786200998] [2023-08-04 04:38:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:43,083 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 04:38:43,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:43,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786200998] [2023-08-04 04:38:43,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786200998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:43,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:43,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:38:43,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24560934] [2023-08-04 04:38:43,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:43,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:38:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:43,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:38:43,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:38:43,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 216 [2023-08-04 04:38:43,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 16 transitions, 38 flow. Second operand has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 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 04:38:43,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:43,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 216 [2023-08-04 04:38:43,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:43,146 INFO L124 PetriNetUnfolderBase]: 9/36 cut-off events. [2023-08-04 04:38:43,146 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:43,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 36 events. 9/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 8 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 50. Up to 37 conditions per place. [2023-08-04 04:38:43,148 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 13 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-04 04:38:43,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 13 transitions, 58 flow [2023-08-04 04:38:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:38:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:38:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 212 transitions. [2023-08-04 04:38:43,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2023-08-04 04:38:43,159 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 212 transitions. [2023-08-04 04:38:43,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 212 transitions. [2023-08-04 04:38:43,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:43,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 212 transitions. [2023-08-04 04:38:43,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 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 04:38:43,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 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 04:38:43,169 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 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 04:38:43,171 INFO L175 Difference]: Start difference. First operand has 17 places, 16 transitions, 38 flow. Second operand 2 states and 212 transitions. [2023-08-04 04:38:43,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 13 transitions, 58 flow [2023-08-04 04:38:43,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:38:43,174 INFO L231 Difference]: Finished difference. Result has 15 places, 13 transitions, 30 flow [2023-08-04 04:38:43,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=13} [2023-08-04 04:38:43,178 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -2 predicate places. [2023-08-04 04:38:43,178 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 13 transitions, 30 flow [2023-08-04 04:38:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 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 04:38:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:43,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:38:43,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:38:43,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:43,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash 421121, now seen corresponding path program 1 times [2023-08-04 04:38:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:43,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119956774] [2023-08-04 04:38:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:43,306 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 04:38:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:43,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119956774] [2023-08-04 04:38:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119956774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:43,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:43,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:38:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232031508] [2023-08-04 04:38:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:43,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:38:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:38:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:38:43,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 216 [2023-08-04 04:38:43,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 04:38:43,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:43,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 216 [2023-08-04 04:38:43,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:43,350 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events. [2023-08-04 04:38:43,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:43,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 33 events. 8/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 68. Up to 30 conditions per place. [2023-08-04 04:38:43,351 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 12 selfloop transitions, 2 changer transitions 1/15 dead transitions. [2023-08-04 04:38:43,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 15 transitions, 64 flow [2023-08-04 04:38:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:38:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:38:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-04 04:38:43,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2023-08-04 04:38:43,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-04 04:38:43,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-04 04:38:43,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:43,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-04 04:38:43,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 04:38:43,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 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 04:38:43,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 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 04:38:43,358 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 30 flow. Second operand 3 states and 298 transitions. [2023-08-04 04:38:43,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 15 transitions, 64 flow [2023-08-04 04:38:43,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:38:43,359 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 38 flow [2023-08-04 04:38:43,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-08-04 04:38:43,360 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2023-08-04 04:38:43,360 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 38 flow [2023-08-04 04:38:43,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 04:38:43,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:43,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:38:43,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:38:43,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:43,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -317703836, now seen corresponding path program 1 times [2023-08-04 04:38:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:43,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816275766] [2023-08-04 04:38:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:43,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:43,448 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 04:38:43,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:43,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816275766] [2023-08-04 04:38:43,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816275766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:38:43,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184018611] [2023-08-04 04:38:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:43,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:38:43,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:38:43,453 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) [2023-08-04 04:38:43,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:38:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:43,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:38:43,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:38:43,618 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 04:38:43,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:38:43,633 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 04:38:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184018611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:38:43,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:38:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:38:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553069382] [2023-08-04 04:38:43,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:38:43,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:38:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:38:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:38:43,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 216 [2023-08-04 04:38:43,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 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 04:38:43,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:43,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 216 [2023-08-04 04:38:43,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:43,682 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-08-04 04:38:43,682 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:43,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 10 events. 2/10 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 26. Up to 6 conditions per place. [2023-08-04 04:38:43,682 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-04 04:38:43,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 7 transitions, 36 flow [2023-08-04 04:38:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:38:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:38:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-08-04 04:38:43,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2023-08-04 04:38:43,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-08-04 04:38:43,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-08-04 04:38:43,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:43,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-08-04 04:38:43,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 04:38:43,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 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 04:38:43,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 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 04:38:43,687 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 4 states and 380 transitions. [2023-08-04 04:38:43,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 7 transitions, 36 flow [2023-08-04 04:38:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:38:43,688 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-04 04:38:43,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-04 04:38:43,688 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -6 predicate places. [2023-08-04 04:38:43,689 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-04 04:38:43,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 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 04:38:43,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:38:43,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:38:43,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:38:43,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:38:43,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:38:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:38:43,899 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 04:38:43,901 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:38:43,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:43,915 INFO L124 PetriNetUnfolderBase]: 12/149 cut-off events. [2023-08-04 04:38:43,916 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:43,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 149 events. 12/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 259 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-04 04:38:43,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:43,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:43,916 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:38:43,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:43,917 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:43,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:43,924 INFO L124 PetriNetUnfolderBase]: 1/59 cut-off events. [2023-08-04 04:38:43,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:43,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-04 04:38:43,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 140 [2023-08-04 04:38:45,720 INFO L134 LiptonReduction]: Checked pairs total: 90 [2023-08-04 04:38:45,721 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-04 04:38:45,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:38:45,723 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;@4b2fe9cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:38:45,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:38:45,724 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:38:45,724 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-04 04:38:45,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:45,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:45,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:38:45,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:38:45,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash 14984764, now seen corresponding path program 1 times [2023-08-04 04:38:45,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:45,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068975674] [2023-08-04 04:38:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:45,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:38:45,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:38:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:38:45,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:38:45,784 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:38:45,785 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:38:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:38:45,785 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:38:45,785 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:38:45,786 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:38:45,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:38:45,796 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:38:45,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 119 transitions, 256 flow [2023-08-04 04:38:45,813 INFO L124 PetriNetUnfolderBase]: 20/236 cut-off events. [2023-08-04 04:38:45,813 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:38:45,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 236 events. 20/236 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 533 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-04 04:38:45,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 119 transitions, 256 flow [2023-08-04 04:38:45,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:45,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:38:45,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:45,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:45,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:45,825 INFO L124 PetriNetUnfolderBase]: 13/189 cut-off events. [2023-08-04 04:38:45,825 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:38:45,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 189 events. 13/189 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 343 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2023-08-04 04:38:45,826 INFO L119 LiptonReduction]: Number of co-enabled transitions 1204 [2023-08-04 04:38:47,584 INFO L134 LiptonReduction]: Checked pairs total: 2724 [2023-08-04 04:38:47,584 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-04 04:38:47,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:38:47,586 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;@4b2fe9cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:38:47,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:38:47,586 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:38:47,587 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:38:47,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:47,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:47,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:38:47,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:47,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash 713, now seen corresponding path program 1 times [2023-08-04 04:38:47,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:47,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348680204] [2023-08-04 04:38:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:47,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:47,618 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 04:38:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348680204] [2023-08-04 04:38:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348680204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:47,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:47,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:38:47,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33830944] [2023-08-04 04:38:47,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:47,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:38:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:47,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:38:47,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:38:47,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 215 [2023-08-04 04:38:47,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 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 04:38:47,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:47,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 215 [2023-08-04 04:38:47,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:47,676 INFO L124 PetriNetUnfolderBase]: 252/479 cut-off events. [2023-08-04 04:38:47,676 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 04:38:47,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 479 events. 252/479 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1938 event pairs, 246 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 199. Up to 466 conditions per place. [2023-08-04 04:38:47,680 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 20 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-04 04:38:47,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 98 flow [2023-08-04 04:38:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:38:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:38:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 233 transitions. [2023-08-04 04:38:47,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541860465116279 [2023-08-04 04:38:47,681 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 233 transitions. [2023-08-04 04:38:47,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 233 transitions. [2023-08-04 04:38:47,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:47,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 233 transitions. [2023-08-04 04:38:47,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 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 04:38:47,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 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 04:38:47,683 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 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 04:38:47,684 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 64 flow. Second operand 2 states and 233 transitions. [2023-08-04 04:38:47,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 98 flow [2023-08-04 04:38:47,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:38:47,686 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2023-08-04 04:38:47,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-08-04 04:38:47,688 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2023-08-04 04:38:47,689 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2023-08-04 04:38:47,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 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 04:38:47,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:47,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:38:47,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:38:47,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:47,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:47,690 INFO L85 PathProgramCache]: Analyzing trace with hash 709303, now seen corresponding path program 1 times [2023-08-04 04:38:47,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:47,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812418035] [2023-08-04 04:38:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:47,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:47,736 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 04:38:47,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:47,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812418035] [2023-08-04 04:38:47,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812418035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:47,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:47,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:38:47,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606142470] [2023-08-04 04:38:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:47,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:38:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:47,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:38:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:38:47,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 215 [2023-08-04 04:38:47,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 04:38:47,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:47,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 215 [2023-08-04 04:38:47,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:47,826 INFO L124 PetriNetUnfolderBase]: 251/476 cut-off events. [2023-08-04 04:38:47,826 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 04:38:47,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 476 events. 251/476 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1871 event pairs, 111 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 958. Up to 457 conditions per place. [2023-08-04 04:38:47,827 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 23 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-04 04:38:47,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 116 flow [2023-08-04 04:38:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:38:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:38:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-04 04:38:47,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100775193798449 [2023-08-04 04:38:47,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-04 04:38:47,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-04 04:38:47,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:47,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-04 04:38:47,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 04:38:47,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 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 04:38:47,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 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 04:38:47,832 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 329 transitions. [2023-08-04 04:38:47,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 116 flow [2023-08-04 04:38:47,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:38:47,834 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 68 flow [2023-08-04 04:38:47,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-04 04:38:47,835 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-04 04:38:47,835 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 68 flow [2023-08-04 04:38:47,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 04:38:47,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:47,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:38:47,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:38:47,835 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:47,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1650484826, now seen corresponding path program 1 times [2023-08-04 04:38:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834837413] [2023-08-04 04:38:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:47,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:47,909 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 04:38:47,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:47,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834837413] [2023-08-04 04:38:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834837413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:38:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626678791] [2023-08-04 04:38:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:38:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:38:47,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:38:47,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:38:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:48,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:38:48,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:38:48,019 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 04:38:48,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:38:48,033 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 04:38:48,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626678791] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:38:48,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:38:48,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:38:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833070536] [2023-08-04 04:38:48,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:38:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:38:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:38:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:38:48,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 215 [2023-08-04 04:38:48,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 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 04:38:48,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:48,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 215 [2023-08-04 04:38:48,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:48,112 INFO L124 PetriNetUnfolderBase]: 241/458 cut-off events. [2023-08-04 04:38:48,112 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-04 04:38:48,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 458 events. 241/458 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1692 event pairs, 13 based on Foata normal form. 4/420 useless extension candidates. Maximal degree in co-relation 963. Up to 357 conditions per place. [2023-08-04 04:38:48,115 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 28 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2023-08-04 04:38:48,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 154 flow [2023-08-04 04:38:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:38:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:38:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2023-08-04 04:38:48,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034883720930232 [2023-08-04 04:38:48,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 433 transitions. [2023-08-04 04:38:48,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 433 transitions. [2023-08-04 04:38:48,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:48,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 433 transitions. [2023-08-04 04:38:48,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 04:38:48,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 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 04:38:48,120 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 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 04:38:48,120 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 68 flow. Second operand 4 states and 433 transitions. [2023-08-04 04:38:48,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 154 flow [2023-08-04 04:38:48,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:38:48,122 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 80 flow [2023-08-04 04:38:48,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-04 04:38:48,123 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-04 04:38:48,123 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 80 flow [2023-08-04 04:38:48,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 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 04:38:48,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:48,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 04:38:48,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:38:48,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-04 04:38:48,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:48,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1150773398, now seen corresponding path program 1 times [2023-08-04 04:38:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514167360] [2023-08-04 04:38:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:48,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:38:48,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514167360] [2023-08-04 04:38:48,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514167360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:48,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:48,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:38:48,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831375112] [2023-08-04 04:38:48,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:48,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:38:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:38:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:38:48,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 215 [2023-08-04 04:38:48,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 04:38:48,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:48,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 215 [2023-08-04 04:38:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:48,507 INFO L124 PetriNetUnfolderBase]: 285/552 cut-off events. [2023-08-04 04:38:48,507 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2023-08-04 04:38:48,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 552 events. 285/552 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2289 event pairs, 153 based on Foata normal form. 0/493 useless extension candidates. Maximal degree in co-relation 1209. Up to 384 conditions per place. [2023-08-04 04:38:48,510 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 28 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-08-04 04:38:48,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 175 flow [2023-08-04 04:38:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:38:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:38:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-04 04:38:48,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069767441860465 [2023-08-04 04:38:48,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-04 04:38:48,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-04 04:38:48,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:48,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-04 04:38:48,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 04:38:48,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 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 04:38:48,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 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 04:38:48,514 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 80 flow. Second operand 3 states and 327 transitions. [2023-08-04 04:38:48,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 175 flow [2023-08-04 04:38:48,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 166 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 04:38:48,517 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 110 flow [2023-08-04 04:38:48,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-04 04:38:48,518 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-04 04:38:48,518 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 110 flow [2023-08-04 04:38:48,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 04:38:48,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:48,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:38:48,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:38:48,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:48,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1594345684, now seen corresponding path program 1 times [2023-08-04 04:38:48,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:48,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670541059] [2023-08-04 04:38:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:48,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:38:48,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:38:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:38:48,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:38:48,560 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:38:48,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:38:48,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:38:48,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:38:48,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:38:48,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:38:48,562 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 04:38:48,563 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 04:38:48,565 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:38:48,565 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:38:48,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:38:48 BasicIcfg [2023-08-04 04:38:48,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:38:48,601 INFO L158 Benchmark]: Toolchain (without parser) took 9649.54ms. Allocated memory was 530.6MB in the beginning and 734.0MB in the end (delta: 203.4MB). Free memory was 488.0MB in the beginning and 560.9MB in the end (delta: -72.8MB). Peak memory consumption was 133.5MB. Max. memory is 16.0GB. [2023-08-04 04:38:48,601 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 356.5MB. Free memory is still 309.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:38:48,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 786.63ms. Allocated memory is still 530.6MB. Free memory was 488.0MB in the beginning and 484.2MB in the end (delta: 3.8MB). Peak memory consumption was 58.1MB. Max. memory is 16.0GB. [2023-08-04 04:38:48,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.51ms. Allocated memory is still 530.6MB. Free memory was 484.2MB in the beginning and 481.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 04:38:48,601 INFO L158 Benchmark]: Boogie Preprocessor took 49.93ms. Allocated memory is still 530.6MB. Free memory was 481.3MB in the beginning and 478.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:38:48,601 INFO L158 Benchmark]: RCFGBuilder took 533.05ms. Allocated memory is still 530.6MB. Free memory was 478.4MB in the beginning and 457.0MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:38:48,602 INFO L158 Benchmark]: TraceAbstraction took 8206.88ms. Allocated memory was 530.6MB in the beginning and 734.0MB in the end (delta: 203.4MB). Free memory was 456.2MB in the beginning and 560.9MB in the end (delta: -104.7MB). Peak memory consumption was 98.5MB. Max. memory is 16.0GB. [2023-08-04 04:38:48,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 356.5MB. Free memory is still 309.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 786.63ms. Allocated memory is still 530.6MB. Free memory was 488.0MB in the beginning and 484.2MB in the end (delta: 3.8MB). Peak memory consumption was 58.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.51ms. Allocated memory is still 530.6MB. Free memory was 484.2MB in the beginning and 481.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.93ms. Allocated memory is still 530.6MB. Free memory was 481.3MB in the beginning and 478.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 533.05ms. Allocated memory is still 530.6MB. Free memory was 478.4MB in the beginning and 457.0MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 8206.88ms. Allocated memory was 530.6MB in the beginning and 734.0MB in the end (delta: 203.4MB). Free memory was 456.2MB in the beginning and 560.9MB in the end (delta: -104.7MB). Peak memory consumption was 98.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 94 PlacesBefore, 17 PlacesAfterwards, 97 TransitionsBefore, 16 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 8 FixpointIterations, 64 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 106 TotalNumberOfCompositions, 540 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 448, independent: 392, independent conditional: 0, independent unconditional: 392, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 254, independent: 233, independent conditional: 0, independent unconditional: 233, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 448, independent: 159, independent conditional: 0, independent unconditional: 159, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 254, unknown conditional: 0, unknown unconditional: 254] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 57 PlacesBefore, 8 PlacesAfterwards, 55 TransitionsBefore, 5 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 8 FixpointIterations, 35 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 70, independent: 70, independent conditional: 0, independent unconditional: 70, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 70, unknown conditional: 0, unknown unconditional: 70] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 104 PlacesBefore, 27 PlacesAfterwards, 106 TransitionsBefore, 25 TransitionsAfterwards, 1204 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 96 TotalNumberOfCompositions, 2724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1452, independent: 1336, independent conditional: 0, independent unconditional: 1336, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 632, independent: 608, independent conditional: 0, independent unconditional: 608, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1452, independent: 728, independent conditional: 0, independent unconditional: 728, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 632, unknown conditional: 0, unknown unconditional: 632] , Statistics on independence cache: Total cache size (in pairs): 56, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1[2]; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] 0 int asdf=0; VAL [asdf=0, mutex={4:0}, pdev=1, t1={3:0}] [L1712] COND TRUE 0 asdf<2 [L1712] FCALL, FORK 0 pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, asdf=0, mutex={4:0}, pdev=1, pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1712] 0 asdf++ VAL [arg={0:0}, asdf=1, mutex={4:0}, pdev=1, t1={3:0}] [L1712] COND TRUE 0 asdf<2 [L1712] FCALL, FORK 0 pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, arg={0:0}, asdf=1, mutex={4:0}, pdev=1, pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0))=0, pthread_mutex_lock(&mutex)=0, t1={3:0}] [L1712] 0 asdf++ VAL [arg={0:0}, arg={0:0}, asdf=2, mutex={4:0}, pdev=1, pthread_mutex_lock(&mutex)=0, t1={3:0}] [L1712] COND FALSE 0 !(asdf<2) [L1714] 0 pdev = 2 VAL [arg={0:0}, arg={0:0}, asdf=2, mutex={4:0}, pdev=2, pthread_mutex_lock(&mutex)=0, t1={3:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 215 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 12 mSDtfsCounter, 215 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 6/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 04:38:48,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...