/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:05:26,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:05:26,527 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 13:05:26,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:05:26,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:05:26,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:05:26,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:05:26,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:05:26,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:05:26,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:05:26,565 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:05:26,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:05:26,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:05:26,566 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:05:26,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:05:26,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:05:26,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:05:26,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:05:26,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:05:26,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:05:26,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:05:26,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:05:26,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:05:26,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:05:26,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:05:26,578 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:05:26,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:05:26,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:05:26,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:05:26,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:05:26,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:05:26,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:05:26,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:05:26,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:05:26,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:05:26,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:05:26,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:05:26,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:05:26,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:05:26,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:05:26,852 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:05:26,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-08-24 13:05:28,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:05:28,261 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:05:28,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-08-24 13:05:28,275 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1ef0d38/11157202ef39409a8a66516b50bc94df/FLAG88eb96053 [2023-08-24 13:05:28,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1ef0d38/11157202ef39409a8a66516b50bc94df [2023-08-24 13:05:28,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:05:28,292 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:05:28,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:05:28,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:05:28,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:05:28,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28, skipping insertion in model container [2023-08-24 13:05:28,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,337 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:05:28,619 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_91-arrayloop2_racefree.i[47038,47051] [2023-08-24 13:05:28,625 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,625 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,626 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,626 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:05:28,650 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:05:28,660 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 13:05:28,661 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 13:05:28,676 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_91-arrayloop2_racefree.i[47038,47051] [2023-08-24 13:05:28,678 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,678 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,679 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,679 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-24 13:05:28,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:05:28,740 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:05:28,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28 WrapperNode [2023-08-24 13:05:28,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:05:28,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:05:28,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:05:28,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:05:28,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,801 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2023-08-24 13:05:28,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:05:28,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:05:28,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:05:28,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:05:28,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:05:28,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:05:28,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:05:28,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:05:28,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (1/1) ... [2023-08-24 13:05:28,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:05:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:28,879 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 13:05:28,894 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 13:05:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:05:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 13:05:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:05:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 13:05:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:05:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:05:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:05:28,915 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 13:05:29,062 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:05:29,064 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:05:29,315 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:05:29,320 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:05:29,321 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-24 13:05:29,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:05:29 BoogieIcfgContainer [2023-08-24 13:05:29,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:05:29,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:05:29,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:05:29,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:05:29,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:05:28" (1/3) ... [2023-08-24 13:05:29,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e21375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:05:29, skipping insertion in model container [2023-08-24 13:05:29,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:28" (2/3) ... [2023-08-24 13:05:29,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e21375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:05:29, skipping insertion in model container [2023-08-24 13:05:29,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:05:29" (3/3) ... [2023-08-24 13:05:29,329 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-08-24 13:05:29,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:05:29,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:05:29,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:05:29,393 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 13:05:29,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 188 transitions, 384 flow [2023-08-24 13:05:29,463 INFO L124 PetriNetUnfolderBase]: 26/206 cut-off events. [2023-08-24 13:05:29,464 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-24 13:05:29,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 206 events. 26/206 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 512 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-24 13:05:29,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 188 transitions, 384 flow [2023-08-24 13:05:29,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 183 transitions, 371 flow [2023-08-24 13:05:29,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:05:29,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 183 transitions, 371 flow [2023-08-24 13:05:29,488 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 183 transitions, 371 flow [2023-08-24 13:05:29,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 183 transitions, 371 flow [2023-08-24 13:05:29,516 INFO L124 PetriNetUnfolderBase]: 25/201 cut-off events. [2023-08-24 13:05:29,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:05:29,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 201 events. 25/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 453 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-24 13:05:29,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 4176 [2023-08-24 13:06:03,590 WARN L234 SmtUtils]: Spent 5.63s 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 13:06:03,856 INFO L134 LiptonReduction]: Checked pairs total: 3913 [2023-08-24 13:06:03,857 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-24 13:06:03,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:06:03,870 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;@4ae1df35, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:06:03,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 13:06:03,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:06:03,875 INFO L124 PetriNetUnfolderBase]: 8/28 cut-off events. [2023-08-24 13:06:03,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:06:03,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:06:03,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:06:03,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:06:03,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:06:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash 665305642, now seen corresponding path program 1 times [2023-08-24 13:06:03,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:06:03,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649945228] [2023-08-24 13:06:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:03,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:06:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:06:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:06:04,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:06:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649945228] [2023-08-24 13:06:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649945228] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:06:04,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:06:04,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 13:06:04,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671767079] [2023-08-24 13:06:04,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:06:04,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:06:04,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:06:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:06:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:06:04,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 365 [2023-08-24 13:06:04,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 13:06:04,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:06:04,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 365 [2023-08-24 13:06:04,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:06:04,308 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2023-08-24 13:06:04,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:06:04,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 113 events. 48/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 286 event pairs, 33 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-08-24 13:06:04,315 INFO L140 encePairwiseOnDemand]: 352/365 looper letters, 22 selfloop transitions, 2 changer transitions 1/29 dead transitions. [2023-08-24 13:06:04,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-08-24 13:06:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:06:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:06:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-24 13:06:04,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602739726027397 [2023-08-24 13:06:04,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-24 13:06:04,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-24 13:06:04,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:06:04,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-24 13:06:04,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 13:06:04,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 13:06:04,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 13:06:04,351 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 504 transitions. [2023-08-24 13:06:04,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-08-24 13:06:04,353 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 13:06:04,354 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 67 flow [2023-08-24 13:06:04,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, 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=67, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-08-24 13:06:04,357 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-24 13:06:04,357 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 67 flow [2023-08-24 13:06:04,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 13:06:04,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:06:04,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:06:04,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:06:04,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:06:04,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:06:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1039943077, now seen corresponding path program 1 times [2023-08-24 13:06:04,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:06:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822333970] [2023-08-24 13:06:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:06:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:06:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:06:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:06:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822333970] [2023-08-24 13:06:04,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822333970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:06:04,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:06:04,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:06:04,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731249708] [2023-08-24 13:06:04,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:06:04,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:06:04,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:06:04,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:06:04,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:06:04,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 365 [2023-08-24 13:06:04,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 13:06:04,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:06:04,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 365 [2023-08-24 13:06:04,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:06:04,601 INFO L124 PetriNetUnfolderBase]: 45/108 cut-off events. [2023-08-24 13:06:04,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:06:04,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 108 events. 45/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 256 event pairs, 30 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 198. Up to 93 conditions per place. [2023-08-24 13:06:04,602 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 21 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-24 13:06:04,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 115 flow [2023-08-24 13:06:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:06:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:06:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-24 13:06:04,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45662100456621 [2023-08-24 13:06:04,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-24 13:06:04,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-24 13:06:04,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:06:04,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-24 13:06:04,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 13:06:04,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 13:06:04,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 13:06:04,608 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 67 flow. Second operand 3 states and 500 transitions. [2023-08-24 13:06:04,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 115 flow [2023-08-24 13:06:04,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:06:04,609 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 79 flow [2023-08-24 13:06:04,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=25, 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=79, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-24 13:06:04,610 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-24 13:06:04,610 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 79 flow [2023-08-24 13:06:04,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 13:06:04,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:06:04,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:06:04,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 13:06:04,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:06:04,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:06:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1351806121, now seen corresponding path program 1 times [2023-08-24 13:06:04,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:06:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380035722] [2023-08-24 13:06:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:04,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:06:04,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 13:06:04,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261787493] [2023-08-24 13:06:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:04,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:06:04,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:06:04,637 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 13:06:04,666 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 13:06:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:06:04,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 13:06:04,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:06:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:06:04,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:06:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:06:04,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:06:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380035722] [2023-08-24 13:06:04,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 13:06:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261787493] [2023-08-24 13:06:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261787493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:06:04,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 13:06:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-24 13:06:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924434267] [2023-08-24 13:06:04,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 13:06:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 13:06:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:06:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 13:06:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 13:06:04,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 365 [2023-08-24 13:06:04,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 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 13:06:04,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:06:04,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 365 [2023-08-24 13:06:04,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:06:05,104 INFO L124 PetriNetUnfolderBase]: 45/114 cut-off events. [2023-08-24 13:06:05,104 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 13:06:05,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 114 events. 45/114 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 268 event pairs, 30 based on Foata normal form. 6/100 useless extension candidates. Maximal degree in co-relation 205. Up to 93 conditions per place. [2023-08-24 13:06:05,105 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 21 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2023-08-24 13:06:05,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 143 flow [2023-08-24 13:06:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:06:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:06:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 982 transitions. [2023-08-24 13:06:05,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484018264840183 [2023-08-24 13:06:05,107 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 982 transitions. [2023-08-24 13:06:05,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 982 transitions. [2023-08-24 13:06:05,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:06:05,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 982 transitions. [2023-08-24 13:06:05,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 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 13:06:05,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 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 13:06:05,113 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 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 13:06:05,113 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 79 flow. Second operand 6 states and 982 transitions. [2023-08-24 13:06:05,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 143 flow [2023-08-24 13:06:05,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:06:05,115 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 117 flow [2023-08-24 13:06:05,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-24 13:06:05,115 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-08-24 13:06:05,116 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 117 flow [2023-08-24 13:06:05,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 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 13:06:05,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:06:05,116 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:06:05,124 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 13:06:05,321 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 13:06:05,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:06:05,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:06:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2114984283, now seen corresponding path program 2 times [2023-08-24 13:06:05,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:06:05,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431387443] [2023-08-24 13:06:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:06:05,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 13:06:05,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781063500] [2023-08-24 13:06:05,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:06:05,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:06:05,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:06:05,395 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 13:06:05,399 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 13:06:05,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:06:05,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:06:05,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 13:06:05,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:06:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:06:05,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:06:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:06:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:06:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431387443] [2023-08-24 13:06:05,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 13:06:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781063500] [2023-08-24 13:06:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781063500] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:06:05,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 13:06:05,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-24 13:06:05,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236693127] [2023-08-24 13:06:05,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 13:06:05,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 13:06:05,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:06:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 13:06:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-24 13:06:05,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 365 [2023-08-24 13:06:05,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 117 flow. Second operand has 12 states, 12 states have (on average 160.66666666666666) internal successors, (1928), 12 states have internal predecessors, (1928), 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 13:06:05,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:06:05,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 365 [2023-08-24 13:06:05,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:06:06,300 INFO L124 PetriNetUnfolderBase]: 45/126 cut-off events. [2023-08-24 13:06:06,300 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-24 13:06:06,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 126 events. 45/126 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 316 event pairs, 30 based on Foata normal form. 12/118 useless extension candidates. Maximal degree in co-relation 201. Up to 93 conditions per place. [2023-08-24 13:06:06,301 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 21 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2023-08-24 13:06:06,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 217 flow [2023-08-24 13:06:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 13:06:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 13:06:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1945 transitions. [2023-08-24 13:06:06,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440639269406393 [2023-08-24 13:06:06,306 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1945 transitions. [2023-08-24 13:06:06,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1945 transitions. [2023-08-24 13:06:06,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:06:06,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1945 transitions. [2023-08-24 13:06:06,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 162.08333333333334) internal successors, (1945), 12 states have internal predecessors, (1945), 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 13:06:06,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 365.0) internal successors, (4745), 13 states have internal predecessors, (4745), 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 13:06:06,316 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 365.0) internal successors, (4745), 13 states have internal predecessors, (4745), 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 13:06:06,316 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 117 flow. Second operand 12 states and 1945 transitions. [2023-08-24 13:06:06,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 217 flow [2023-08-24 13:06:06,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 203 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 13:06:06,318 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 199 flow [2023-08-24 13:06:06,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=199, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-24 13:06:06,318 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-24 13:06:06,318 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 199 flow [2023-08-24 13:06:06,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 160.66666666666666) internal successors, (1928), 12 states have internal predecessors, (1928), 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 13:06:06,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:06:06,319 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:06:06,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 13:06:06,525 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 13:06:06,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:06:06,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:06:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1286117339, now seen corresponding path program 3 times [2023-08-24 13:06:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:06:06,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833247672] [2023-08-24 13:06:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:06:06,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 13:06:06,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765532994] [2023-08-24 13:06:06,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 13:06:06,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:06:06,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:06:06,641 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 13:06:06,642 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 13:06:06,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 13:06:06,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:06:06,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 13:06:06,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:06:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-24 13:06:06,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:06:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-24 13:06:07,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:06:07,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833247672] [2023-08-24 13:06:07,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 13:06:07,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765532994] [2023-08-24 13:06:07,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765532994] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:06:07,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 13:06:07,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-24 13:06:07,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512125683] [2023-08-24 13:06:07,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 13:06:07,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 13:06:07,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:06:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 13:06:07,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 13:06:07,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 365 [2023-08-24 13:06:07,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 158.66666666666666) internal successors, (952), 6 states have internal predecessors, (952), 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 13:06:07,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:06:07,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 365 [2023-08-24 13:06:07,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:06:07,323 INFO L124 PetriNetUnfolderBase]: 47/153 cut-off events. [2023-08-24 13:06:07,324 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-24 13:06:07,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 153 events. 47/153 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 255 event pairs, 30 based on Foata normal form. 3/136 useless extension candidates. Maximal degree in co-relation 310. Up to 87 conditions per place. [2023-08-24 13:06:07,326 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 65 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-24 13:06:07,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 690 flow [2023-08-24 13:06:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:06:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:06:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 970 transitions. [2023-08-24 13:06:07,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2023-08-24 13:06:07,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 970 transitions. [2023-08-24 13:06:07,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 970 transitions. [2023-08-24 13:06:07,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:06:07,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 970 transitions. [2023-08-24 13:06:07,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 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 13:06:07,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 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 13:06:07,332 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 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 13:06:07,332 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 199 flow. Second operand 6 states and 970 transitions. [2023-08-24 13:06:07,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 690 flow [2023-08-24 13:06:07,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 496 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-24 13:06:07,339 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 234 flow [2023-08-24 13:06:07,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-08-24 13:06:07,342 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2023-08-24 13:06:07,342 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 234 flow [2023-08-24 13:06:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.66666666666666) internal successors, (952), 6 states have internal predecessors, (952), 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 13:06:07,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:06:07,342 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:06:07,348 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 13:06:07,548 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 13:06:07,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:06:07,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:06:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2015629294, now seen corresponding path program 4 times [2023-08-24 13:06:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:06:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305596677] [2023-08-24 13:06:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:06:07,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 13:06:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50677139] [2023-08-24 13:06:07,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 13:06:07,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:06:07,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:06:07,881 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 13:06:07,883 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 13:06:09,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 13:06:09,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:06:09,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 9526 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 13:06:09,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:06:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-08-24 13:06:09,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:06:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-08-24 13:06:10,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:06:10,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305596677] [2023-08-24 13:06:10,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 13:06:10,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50677139] [2023-08-24 13:06:10,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50677139] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:06:10,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-24 13:06:10,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-24 13:06:10,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597060962] [2023-08-24 13:06:10,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-24 13:06:10,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 13:06:10,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:06:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 13:06:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-24 13:06:10,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 365 [2023-08-24 13:06:10,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 234 flow. Second operand has 24 states, 24 states have (on average 160.45833333333334) internal successors, (3851), 24 states have internal predecessors, (3851), 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 13:06:10,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:06:10,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 365 [2023-08-24 13:06:10,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:06:11,670 INFO L124 PetriNetUnfolderBase]: 47/201 cut-off events. [2023-08-24 13:06:11,670 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-08-24 13:06:11,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 201 events. 47/201 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 255 event pairs, 30 based on Foata normal form. 48/229 useless extension candidates. Maximal degree in co-relation 423. Up to 99 conditions per place. [2023-08-24 13:06:11,671 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 23 selfloop transitions, 24 changer transitions 0/51 dead transitions. [2023-08-24 13:06:11,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 51 transitions, 400 flow [2023-08-24 13:06:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 13:06:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 13:06:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3871 transitions. [2023-08-24 13:06:11,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44189497716894977 [2023-08-24 13:06:11,679 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3871 transitions. [2023-08-24 13:06:11,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3871 transitions. [2023-08-24 13:06:11,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:06:11,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3871 transitions. [2023-08-24 13:06:11,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 161.29166666666666) internal successors, (3871), 24 states have internal predecessors, (3871), 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 13:06:11,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 365.0) internal successors, (9125), 25 states have internal predecessors, (9125), 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 13:06:11,695 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 365.0) internal successors, (9125), 25 states have internal predecessors, (9125), 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 13:06:11,695 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 234 flow. Second operand 24 states and 3871 transitions. [2023-08-24 13:06:11,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 51 transitions, 400 flow [2023-08-24 13:06:11,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 51 transitions, 392 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 13:06:11,698 INFO L231 Difference]: Finished difference. Result has 89 places, 51 transitions, 468 flow [2023-08-24 13:06:11,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=468, PETRI_PLACES=89, PETRI_TRANSITIONS=51} [2023-08-24 13:06:11,700 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 64 predicate places. [2023-08-24 13:06:11,700 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 51 transitions, 468 flow [2023-08-24 13:06:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 160.45833333333334) internal successors, (3851), 24 states have internal predecessors, (3851), 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 13:06:11,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:06:11,701 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:06:11,726 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 13:06:11,923 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 13:06:11,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:06:11,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:06:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1956381970, now seen corresponding path program 5 times [2023-08-24 13:06:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:06:11,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911724200] [2023-08-24 13:06:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:06:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:06:12,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-24 13:06:12,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537608141] [2023-08-24 13:06:12,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 13:06:12,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:06:12,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:06:12,508 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 13:06:12,510 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 13:20:14,955 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 13:20:14,956 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 13:20:16,005 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 13:20:16,168 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 13:20:16,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-24 13:20:16,214 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 13:20:16,216 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 13:20:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:20:16,217 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 106 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-24 13:20:16,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-24 13:20:16,218 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-24 13:20:16,219 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT (1/2) [2023-08-24 13:20:16,220 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 13:20:16,220 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 13:20:16,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:20:16 BasicIcfg [2023-08-24 13:20:16,229 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 13:20:16,230 INFO L158 Benchmark]: Toolchain (without parser) took 887937.93ms. Allocated memory was 406.8MB in the beginning and 673.2MB in the end (delta: 266.3MB). Free memory was 361.9MB in the beginning and 560.9MB in the end (delta: -199.0MB). Peak memory consumption was 270.8MB. Max. memory is 16.0GB. [2023-08-24 13:20:16,230 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 406.8MB. Free memory was 384.8MB in the beginning and 384.8MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:20:16,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.85ms. Allocated memory is still 406.8MB. Free memory was 360.9MB in the beginning and 330.5MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-24 13:20:16,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.07ms. Allocated memory is still 406.8MB. Free memory was 330.5MB in the beginning and 327.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 13:20:16,231 INFO L158 Benchmark]: Boogie Preprocessor took 28.59ms. Allocated memory is still 406.8MB. Free memory was 327.3MB in the beginning and 325.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:20:16,231 INFO L158 Benchmark]: RCFGBuilder took 491.70ms. Allocated memory is still 406.8MB. Free memory was 325.2MB in the beginning and 302.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 13:20:16,242 INFO L158 Benchmark]: TraceAbstraction took 886905.35ms. Allocated memory was 406.8MB in the beginning and 673.2MB in the end (delta: 266.3MB). Free memory was 302.2MB in the beginning and 560.9MB in the end (delta: -258.8MB). Peak memory consumption was 210.0MB. Max. memory is 16.0GB. [2023-08-24 13:20:16,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 406.8MB. Free memory was 384.8MB in the beginning and 384.8MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 449.85ms. Allocated memory is still 406.8MB. Free memory was 360.9MB in the beginning and 330.5MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.07ms. Allocated memory is still 406.8MB. Free memory was 330.5MB in the beginning and 327.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.59ms. Allocated memory is still 406.8MB. Free memory was 327.3MB in the beginning and 325.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 491.70ms. Allocated memory is still 406.8MB. Free memory was 325.2MB in the beginning and 302.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 886905.35ms. Allocated memory was 406.8MB in the beginning and 673.2MB in the end (delta: 266.3MB). Free memory was 302.2MB in the beginning and 560.9MB in the end (delta: -258.8MB). Peak memory consumption was 210.0MB. 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: 34.4s, 163 PlacesBefore, 25 PlacesAfterwards, 183 TransitionsBefore, 36 TransitionsAfterwards, 4176 CoEnabledTransitionPairs, 6 FixpointIterations, 62 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 17 ConcurrentYvCompositions, 9 ChoiceCompositions, 177 TotalNumberOfCompositions, 3913 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3332, independent: 3270, independent conditional: 0, independent unconditional: 3270, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2107, independent: 2089, independent conditional: 0, independent unconditional: 2089, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3332, independent: 1181, independent conditional: 0, independent unconditional: 1181, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 2107, unknown conditional: 0, unknown unconditional: 2107] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 106 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 236 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: 886.8s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 34.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 343 IncrementalHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=468occurred 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: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 125 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11197 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1917/2051 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 [2023-08-24 13:20:16,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137