/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 00:19:02,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 00:19:02,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 00:19:02,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 00:19:02,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 00:19:02,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 00:19:02,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 00:19:02,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 00:19:02,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 00:19:02,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 00:19:02,795 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 00:19:02,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 00:19:02,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 00:19:02,797 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 00:19:02,797 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 00:19:02,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 00:19:02,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 00:19:02,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 00:19:02,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 00:19:02,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 00:19:02,798 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 00:19:02,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 00:19:02,799 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 00:19:02,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 00:19:02,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 00:19:02,800 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 00:19:02,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 00:19:02,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:19:02,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 00:19:02,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 00:19:02,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 00:19:02,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 00:19:02,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 00:19:02,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 00:19:02,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 00:19:02,803 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 00:19:03,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 00:19:03,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 00:19:03,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 00:19:03,089 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 00:19:03,090 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 00:19:03,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-08-24 00:19:04,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 00:19:04,578 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 00:19:04,579 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-08-24 00:19:04,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646dc7fac/e32ef97defef419e8b613872a4297a37/FLAG0146e7d22 [2023-08-24 00:19:04,611 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646dc7fac/e32ef97defef419e8b613872a4297a37 [2023-08-24 00:19:04,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 00:19:04,614 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 00:19:04,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 00:19:04,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 00:19:04,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 00:19:04,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:19:04" (1/1) ... [2023-08-24 00:19:04,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fcdffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:04, skipping insertion in model container [2023-08-24 00:19:04,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:19:04" (1/1) ... [2023-08-24 00:19:04,680 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 00:19:05,111 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-08-24 00:19:05,121 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,122 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,122 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,123 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:19:05,178 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 00:19:05,203 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 00:19:05,205 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 00:19:05,219 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-08-24 00:19:05,224 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,224 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,225 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,226 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 00:19:05,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:19:05,315 INFO L206 MainTranslator]: Completed translation [2023-08-24 00:19:05,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05 WrapperNode [2023-08-24 00:19:05,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 00:19:05,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 00:19:05,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 00:19:05,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 00:19:05,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,380 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 229 [2023-08-24 00:19:05,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 00:19:05,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 00:19:05,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 00:19:05,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 00:19:05,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 00:19:05,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 00:19:05,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 00:19:05,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 00:19:05,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (1/1) ... [2023-08-24 00:19:05,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:19:05,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:05,457 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) [2023-08-24 00:19:05,463 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 [2023-08-24 00:19:05,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 00:19:05,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 00:19:05,487 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 00:19:05,487 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 00:19:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 00:19:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 00:19:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 00:19:05,489 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 00:19:05,614 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 00:19:05,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 00:19:05,975 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 00:19:05,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 00:19:05,984 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-24 00:19:05,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:19:05 BoogieIcfgContainer [2023-08-24 00:19:05,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 00:19:05,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 00:19:05,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 00:19:05,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 00:19:06,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:19:04" (1/3) ... [2023-08-24 00:19:06,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67966431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:19:06, skipping insertion in model container [2023-08-24 00:19:06,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:19:05" (2/3) ... [2023-08-24 00:19:06,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67966431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:19:06, skipping insertion in model container [2023-08-24 00:19:06,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:19:05" (3/3) ... [2023-08-24 00:19:06,003 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2023-08-24 00:19:06,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 00:19:06,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 00:19:06,026 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 00:19:06,108 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 00:19:06,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 237 transitions, 482 flow [2023-08-24 00:19:06,218 INFO L124 PetriNetUnfolderBase]: 28/255 cut-off events. [2023-08-24 00:19:06,218 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-24 00:19:06,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 28/255 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 414 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-08-24 00:19:06,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 237 transitions, 482 flow [2023-08-24 00:19:06,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 232 transitions, 469 flow [2023-08-24 00:19:06,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:19:06,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 232 transitions, 469 flow [2023-08-24 00:19:06,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 232 transitions, 469 flow [2023-08-24 00:19:06,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 232 transitions, 469 flow [2023-08-24 00:19:06,348 INFO L124 PetriNetUnfolderBase]: 27/250 cut-off events. [2023-08-24 00:19:06,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 00:19:06,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 250 events. 27/250 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 357 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-08-24 00:19:06,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 4176 [2023-08-24 00:19:23,252 WARN L234 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 00:19:28,293 WARN L234 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 00:19:34,143 WARN L234 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 00:19:39,362 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 00:19:39,676 INFO L134 LiptonReduction]: Checked pairs total: 4157 [2023-08-24 00:19:39,676 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-08-24 00:19:39,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:19:39,691 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@238b6973, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:19:39,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 00:19:39,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:19:39,695 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-08-24 00:19:39,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 00:19:39,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:39,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-24 00:19:39,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 00:19:39,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash 678225158, now seen corresponding path program 1 times [2023-08-24 00:19:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743878293] [2023-08-24 00:19:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:19:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743878293] [2023-08-24 00:19:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743878293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:19:39,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:19:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 00:19:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950480165] [2023-08-24 00:19:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:19:39,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 00:19:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 00:19:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 00:19:39,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-24 00:19:39,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:39,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:39,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-24 00:19:39,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:40,185 INFO L124 PetriNetUnfolderBase]: 48/112 cut-off events. [2023-08-24 00:19:40,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 00:19:40,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 112 events. 48/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 33 based on Foata normal form. 8/92 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-08-24 00:19:40,187 INFO L140 encePairwiseOnDemand]: 461/474 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-24 00:19:40,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-08-24 00:19:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 00:19:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 00:19:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-08-24 00:19:40,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45358649789029537 [2023-08-24 00:19:40,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-08-24 00:19:40,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-08-24 00:19:40,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:40,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-08-24 00:19:40,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-24 00:19:40,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,218 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 645 transitions. [2023-08-24 00:19:40,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-08-24 00:19:40,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 00:19:40,222 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-08-24 00:19:40,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-24 00:19:40,226 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-24 00:19:40,226 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-08-24 00:19:40,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:40,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:19:40,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 00:19:40,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 00:19:40,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 465019210, now seen corresponding path program 1 times [2023-08-24 00:19:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:40,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128417771] [2023-08-24 00:19:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:40,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:19:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:40,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:40,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128417771] [2023-08-24 00:19:40,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128417771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:19:40,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:19:40,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:19:40,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444691633] [2023-08-24 00:19:40,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:19:40,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 00:19:40,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:40,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 00:19:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 00:19:40,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 474 [2023-08-24 00:19:40,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:40,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 474 [2023-08-24 00:19:40,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:40,465 INFO L124 PetriNetUnfolderBase]: 48/114 cut-off events. [2023-08-24 00:19:40,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 00:19:40,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 114 events. 48/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 278 event pairs, 33 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 210. Up to 100 conditions per place. [2023-08-24 00:19:40,466 INFO L140 encePairwiseOnDemand]: 471/474 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-24 00:19:40,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-08-24 00:19:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 00:19:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 00:19:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-08-24 00:19:40,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45147679324894513 [2023-08-24 00:19:40,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-08-24 00:19:40,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-08-24 00:19:40,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:40,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-08-24 00:19:40,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,476 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 642 transitions. [2023-08-24 00:19:40,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-08-24 00:19:40,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:19:40,477 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-08-24 00:19:40,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-08-24 00:19:40,478 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-24 00:19:40,478 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-08-24 00:19:40,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:40,479 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:19:40,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 00:19:40,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 00:19:40,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1827413293, now seen corresponding path program 1 times [2023-08-24 00:19:40,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:40,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438567389] [2023-08-24 00:19:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:40,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:40,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 00:19:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074470962] [2023-08-24 00:19:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:40,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:40,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:40,529 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) [2023-08-24 00:19:40,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 00:19:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:19:40,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 00:19:40,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:19:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:40,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:19:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:40,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438567389] [2023-08-24 00:19:40,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 00:19:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074470962] [2023-08-24 00:19:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074470962] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:19:40,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 00:19:40,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-24 00:19:40,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032731295] [2023-08-24 00:19:40,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 00:19:40,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 00:19:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:40,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 00:19:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 00:19:40,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 474 [2023-08-24 00:19:40,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 207.83333333333334) internal successors, (1247), 6 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:40,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:40,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 474 [2023-08-24 00:19:40,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:41,277 INFO L124 PetriNetUnfolderBase]: 48/120 cut-off events. [2023-08-24 00:19:41,277 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 00:19:41,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 120 events. 48/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 290 event pairs, 33 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 217. Up to 100 conditions per place. [2023-08-24 00:19:41,278 INFO L140 encePairwiseOnDemand]: 471/474 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-24 00:19:41,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-08-24 00:19:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 00:19:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 00:19:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1265 transitions. [2023-08-24 00:19:41,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44479606188466947 [2023-08-24 00:19:41,282 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1265 transitions. [2023-08-24 00:19:41,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1265 transitions. [2023-08-24 00:19:41,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:41,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1265 transitions. [2023-08-24 00:19:41,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:41,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 474.0) internal successors, (3318), 7 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:41,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 474.0) internal successors, (3318), 7 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:41,293 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 1265 transitions. [2023-08-24 00:19:41,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-08-24 00:19:41,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 00:19:41,294 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-08-24 00:19:41,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-24 00:19:41,295 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-24 00:19:41,295 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-08-24 00:19:41,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.83333333333334) internal successors, (1247), 6 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:41,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:41,296 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:19:41,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 00:19:41,502 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 [2023-08-24 00:19:41,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 00:19:41,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 48824842, now seen corresponding path program 2 times [2023-08-24 00:19:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:41,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888778392] [2023-08-24 00:19:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:41,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 00:19:41,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148731404] [2023-08-24 00:19:41,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:19:41,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:41,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:41,568 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) [2023-08-24 00:19:41,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 00:19:41,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:19:41,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:19:41,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 00:19:41,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:19:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:41,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:19:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888778392] [2023-08-24 00:19:42,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 00:19:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148731404] [2023-08-24 00:19:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148731404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:19:42,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 00:19:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-24 00:19:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085124854] [2023-08-24 00:19:42,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 00:19:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 00:19:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 00:19:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-24 00:19:42,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 474 [2023-08-24 00:19:42,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 207.41666666666666) internal successors, (2489), 12 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:42,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:42,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 474 [2023-08-24 00:19:42,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:42,498 INFO L124 PetriNetUnfolderBase]: 48/132 cut-off events. [2023-08-24 00:19:42,498 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-24 00:19:42,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 132 events. 48/132 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 338 event pairs, 33 based on Foata normal form. 12/119 useless extension candidates. Maximal degree in co-relation 213. Up to 100 conditions per place. [2023-08-24 00:19:42,500 INFO L140 encePairwiseOnDemand]: 471/474 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-08-24 00:19:42,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-08-24 00:19:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 00:19:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 00:19:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2510 transitions. [2023-08-24 00:19:42,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44127988748241914 [2023-08-24 00:19:42,511 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2510 transitions. [2023-08-24 00:19:42,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2510 transitions. [2023-08-24 00:19:42,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:42,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2510 transitions. [2023-08-24 00:19:42,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 209.16666666666666) internal successors, (2510), 12 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:42,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 474.0) internal successors, (6162), 13 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:42,537 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 474.0) internal successors, (6162), 13 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:42,537 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 2510 transitions. [2023-08-24 00:19:42,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-08-24 00:19:42,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 00:19:42,542 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-08-24 00:19:42,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-24 00:19:42,543 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-24 00:19:42,543 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-08-24 00:19:42,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 207.41666666666666) internal successors, (2489), 12 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:42,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:42,545 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:19:42,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 00:19:42,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-24 00:19:42,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 00:19:42,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash 603529002, now seen corresponding path program 3 times [2023-08-24 00:19:42,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:42,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432824760] [2023-08-24 00:19:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:42,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 00:19:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393076526] [2023-08-24 00:19:42,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 00:19:42,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:42,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:42,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:19:42,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 00:19:43,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 00:19:43,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:19:43,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 00:19:43,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:19:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-24 00:19:43,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:19:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-24 00:19:43,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:43,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432824760] [2023-08-24 00:19:43,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 00:19:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393076526] [2023-08-24 00:19:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393076526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:19:43,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 00:19:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-24 00:19:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591966461] [2023-08-24 00:19:43,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 00:19:43,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 00:19:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 00:19:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 00:19:43,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-24 00:19:43,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:43,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:43,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-24 00:19:43,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:43,593 INFO L124 PetriNetUnfolderBase]: 50/159 cut-off events. [2023-08-24 00:19:43,593 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-24 00:19:43,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 159 events. 50/159 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 276 event pairs, 33 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-08-24 00:19:43,598 INFO L140 encePairwiseOnDemand]: 470/474 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-24 00:19:43,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-08-24 00:19:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 00:19:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 00:19:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1253 transitions. [2023-08-24 00:19:43,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44057665260196904 [2023-08-24 00:19:43,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1253 transitions. [2023-08-24 00:19:43,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1253 transitions. [2023-08-24 00:19:43,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:43,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1253 transitions. [2023-08-24 00:19:43,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.83333333333334) internal successors, (1253), 6 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:43,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 474.0) internal successors, (3318), 7 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:43,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 474.0) internal successors, (3318), 7 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:43,609 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 1253 transitions. [2023-08-24 00:19:43,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-08-24 00:19:43,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-24 00:19:43,617 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-08-24 00:19:43,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-24 00:19:43,619 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-08-24 00:19:43,619 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-08-24 00:19:43,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:43,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:43,620 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-24 00:19:43,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 00:19:43,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:43,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 00:19:43,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash -163231338, now seen corresponding path program 4 times [2023-08-24 00:19:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:43,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273122979] [2023-08-24 00:19:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:44,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 00:19:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984371941] [2023-08-24 00:19:44,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 00:19:44,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:44,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:44,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:19:44,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 00:19:46,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 00:19:46,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:19:46,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 9543 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 00:19:46,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:19:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-24 00:19:46,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:19:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-24 00:19:46,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:46,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273122979] [2023-08-24 00:19:46,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 00:19:46,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984371941] [2023-08-24 00:19:46,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984371941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:19:46,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 00:19:46,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-24 00:19:46,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975544888] [2023-08-24 00:19:46,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 00:19:46,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 00:19:46,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:46,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 00:19:46,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-24 00:19:46,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 474 [2023-08-24 00:19:46,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 207.33333333333334) internal successors, (4976), 24 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:46,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:46,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 474 [2023-08-24 00:19:46,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:48,154 INFO L124 PetriNetUnfolderBase]: 50/207 cut-off events. [2023-08-24 00:19:48,154 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-08-24 00:19:48,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 207 events. 50/207 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 276 event pairs, 33 based on Foata normal form. 48/230 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-08-24 00:19:48,155 INFO L140 encePairwiseOnDemand]: 471/474 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-08-24 00:19:48,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-08-24 00:19:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 00:19:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 00:19:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5000 transitions. [2023-08-24 00:19:48,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43952180028129395 [2023-08-24 00:19:48,170 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5000 transitions. [2023-08-24 00:19:48,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5000 transitions. [2023-08-24 00:19:48,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:48,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5000 transitions. [2023-08-24 00:19:48,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 208.33333333333334) internal successors, (5000), 24 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:48,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 474.0) internal successors, (11850), 25 states have internal predecessors, (11850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:48,199 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 474.0) internal successors, (11850), 25 states have internal predecessors, (11850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:48,200 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 5000 transitions. [2023-08-24 00:19:48,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-08-24 00:19:48,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 00:19:48,203 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-08-24 00:19:48,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-08-24 00:19:48,205 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-08-24 00:19:48,206 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-08-24 00:19:48,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 207.33333333333334) internal successors, (4976), 24 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:48,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:48,219 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-24 00:19:48,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 00:19:48,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:48,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 00:19:48,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1078522218, now seen corresponding path program 5 times [2023-08-24 00:19:48,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:48,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920563356] [2023-08-24 00:19:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:48,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:49,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 00:19:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921923728] [2023-08-24 00:19:49,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 00:19:49,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:49,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:49,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:19:49,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-24 00:33:44,406 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 00:33:44,406 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 00:33:45,484 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 [2023-08-24 00:33:45,617 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-24 00:33:45,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-24 00:33:45,660 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-24 00:33:45,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-24 00:33:45,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 00:33:45,662 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-24 00:33:45,663 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-24 00:33:45,663 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-24 00:33:45,663 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-24 00:33:45,667 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 00:33:45,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 00:33:45,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:33:45 BasicIcfg [2023-08-24 00:33:45,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 00:33:45,670 INFO L158 Benchmark]: Toolchain (without parser) took 881055.16ms. Allocated memory was 388.0MB in the beginning and 559.9MB in the end (delta: 172.0MB). Free memory was 360.8MB in the beginning and 344.3MB in the end (delta: 16.5MB). Peak memory consumption was 191.1MB. Max. memory is 16.0GB. [2023-08-24 00:33:45,670 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory was 364.5MB in the beginning and 364.4MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 00:33:45,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.19ms. Allocated memory is still 388.0MB. Free memory was 360.8MB in the beginning and 329.7MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-24 00:33:45,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.13ms. Allocated memory is still 388.0MB. Free memory was 329.7MB in the beginning and 326.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 00:33:45,671 INFO L158 Benchmark]: Boogie Preprocessor took 50.56ms. Allocated memory is still 388.0MB. Free memory was 326.7MB in the beginning and 324.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 00:33:45,671 INFO L158 Benchmark]: RCFGBuilder took 554.65ms. Allocated memory is still 388.0MB. Free memory was 324.0MB in the beginning and 299.8MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 00:33:45,671 INFO L158 Benchmark]: TraceAbstraction took 879672.42ms. Allocated memory was 388.0MB in the beginning and 559.9MB in the end (delta: 172.0MB). Free memory was 298.9MB in the beginning and 344.3MB in the end (delta: -45.5MB). Peak memory consumption was 128.2MB. Max. memory is 16.0GB. [2023-08-24 00:33:45,673 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory was 364.5MB in the beginning and 364.4MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 700.19ms. Allocated memory is still 388.0MB. Free memory was 360.8MB in the beginning and 329.7MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 64.13ms. Allocated memory is still 388.0MB. Free memory was 329.7MB in the beginning and 326.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.56ms. Allocated memory is still 388.0MB. Free memory was 326.7MB in the beginning and 324.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 554.65ms. Allocated memory is still 388.0MB. Free memory was 324.0MB in the beginning and 299.8MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 879672.42ms. Allocated memory was 388.0MB in the beginning and 559.9MB in the end (delta: 172.0MB). Free memory was 298.9MB in the beginning and 344.3MB in the end (delta: -45.5MB). Peak memory consumption was 128.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.4s, 210 PlacesBefore, 25 PlacesAfterwards, 232 TransitionsBefore, 36 TransitionsAfterwards, 4176 CoEnabledTransitionPairs, 7 FixpointIterations, 110 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 19 ConcurrentYvCompositions, 11 ChoiceCompositions, 237 TotalNumberOfCompositions, 4157 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3375, independent: 3302, independent conditional: 0, independent unconditional: 3302, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2118, independent: 2099, independent conditional: 0, independent unconditional: 2099, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3375, independent: 1203, independent conditional: 0, independent unconditional: 1203, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 2118, unknown conditional: 0, unknown unconditional: 2118] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1072]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 283 locations, 3 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: 879.5s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 33.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 496 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 496 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=6, InterpolantAutomatonStates: 54, 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: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11265 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 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 could not prove your program: Timeout Completed graceful shutdown