/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:10:00,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:10:00,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:10:00,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:10:00,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:10:00,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:10:00,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:10:00,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:10:00,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:10:00,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:10:00,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:10:00,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:10:00,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:10:00,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:10:00,341 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:10:00,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:10:00,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:10:00,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:10:00,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:10:00,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:10:00,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:10:00,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:10:00,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:10:00,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:10:00,353 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:10:00,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:10:00,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:10:00,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:10:00,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:10:00,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:10:00,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:10:00,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:10:00,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:10:00,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:10:00,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:10:00,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:10:00,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:10:00,356 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:10:00,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:10:00,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:10:00,356 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:10:00,356 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:10:00,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:10:00,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:10:00,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:10:00,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:10:00,536 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:10:00,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i [2023-08-04 04:10:01,579 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:10:01,785 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:10:01,786 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i [2023-08-04 04:10:01,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa5b6d3c/426443fd65984e5381bd612ffc529920/FLAGc17f641e8 [2023-08-04 04:10:01,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa5b6d3c/426443fd65984e5381bd612ffc529920 [2023-08-04 04:10:01,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:10:01,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:10:01,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:10:01,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:10:01,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:10:01,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:10:01" (1/1) ... [2023-08-04 04:10:01,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb75bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:01, skipping insertion in model container [2023-08-04 04:10:01,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:10:01" (1/1) ... [2023-08-04 04:10:01,874 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:10:02,255 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i[47038,47051] [2023-08-04 04:10:02,265 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,265 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,265 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,267 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:10:02,320 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:10:02,344 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:10:02,346 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:10:02,362 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i[47038,47051] [2023-08-04 04:10:02,364 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,365 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,365 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,365 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:10:02,387 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1084] [2023-08-04 04:10:02,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:10:02,458 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:10:02,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02 WrapperNode [2023-08-04 04:10:02,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:10:02,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:10:02,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:10:02,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:10:02,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,527 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 228 [2023-08-04 04:10:02,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:10:02,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:10:02,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:10:02,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:10:02,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:10:02,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:10:02,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:10:02,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:10:02,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (1/1) ... [2023-08-04 04:10:02,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:10:02,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:10:02,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:10:02,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:10:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:10:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-04 04:10:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:10:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:10:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:10:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:10:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 04:10:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:10:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:10:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:10:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:10:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:10:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:10:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:10:02,658 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:10:02,842 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:10:02,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:10:03,163 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:10:03,170 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:10:03,170 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-04 04:10:03,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:10:03 BoogieIcfgContainer [2023-08-04 04:10:03,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:10:03,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:10:03,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:10:03,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:10:03,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:10:01" (1/3) ... [2023-08-04 04:10:03,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fee6853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:10:03, skipping insertion in model container [2023-08-04 04:10:03,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:10:02" (2/3) ... [2023-08-04 04:10:03,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fee6853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:10:03, skipping insertion in model container [2023-08-04 04:10:03,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:10:03" (3/3) ... [2023-08-04 04:10:03,179 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i [2023-08-04 04:10:03,185 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:10:03,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:10:03,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:10:03,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:10:03,264 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:10:03,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 237 transitions, 482 flow [2023-08-04 04:10:03,375 INFO L124 PetriNetUnfolderBase]: 29/253 cut-off events. [2023-08-04 04:10:03,375 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-04 04:10:03,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 253 events. 29/253 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 514 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-08-04 04:10:03,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 237 transitions, 482 flow [2023-08-04 04:10:03,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 232 transitions, 469 flow [2023-08-04 04:10:03,394 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:10:03,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 232 transitions, 469 flow [2023-08-04 04:10:03,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 232 transitions, 469 flow [2023-08-04 04:10:03,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 232 transitions, 469 flow [2023-08-04 04:10:03,445 INFO L124 PetriNetUnfolderBase]: 28/248 cut-off events. [2023-08-04 04:10:03,445 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:10:03,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 248 events. 28/248 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 471 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-08-04 04:10:03,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-08-04 04:10:16,771 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-04 04:10:28,071 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-04 04:10:33,843 WARN L233 SmtUtils]: Spent 5.77s 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) [2023-08-04 04:10:33,985 INFO L134 LiptonReduction]: Checked pairs total: 3403 [2023-08-04 04:10:33,986 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-04 04:10:34,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:10:34,007 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54c7fad8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:10:34,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:10:34,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:10:34,024 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2023-08-04 04:10:34,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:10:34,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:10:34,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:10:34,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:10:34,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:10:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash -11794566, now seen corresponding path program 1 times [2023-08-04 04:10:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:10:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273891716] [2023-08-04 04:10:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:10:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:10:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:10:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:10:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273891716] [2023-08-04 04:10:34,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273891716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:10:34,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:10:34,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:10:34,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480765108] [2023-08-04 04:10:34,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:10:34,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:10:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:10:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:10:34,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:10:34,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 478 [2023-08-04 04:10:34,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:10:34,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 478 [2023-08-04 04:10:34,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:10:34,583 INFO L124 PetriNetUnfolderBase]: 48/112 cut-off events. [2023-08-04 04:10:34,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:10:34,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 112 events. 48/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 33 based on Foata normal form. 8/92 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-08-04 04:10:34,585 INFO L140 encePairwiseOnDemand]: 465/478 looper letters, 22 selfloop transitions, 2 changer transitions 1/29 dead transitions. [2023-08-04 04:10:34,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-08-04 04:10:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:10:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:10:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-04 04:10:34,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46443514644351463 [2023-08-04 04:10:34,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-04 04:10:34,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-04 04:10:34,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:10:34,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-04 04:10:34,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,629 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 666 transitions. [2023-08-04 04:10:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-08-04 04:10:34,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:10:34,633 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 67 flow [2023-08-04 04:10:34,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, 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} [2023-08-04 04:10:34,639 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-04 04:10:34,639 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 67 flow [2023-08-04 04:10:34,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:10:34,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:10:34,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:10:34,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:10:34,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:10:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -995339352, now seen corresponding path program 1 times [2023-08-04 04:10:34,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:10:34,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888432859] [2023-08-04 04:10:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:10:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:10:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:10:34,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:10:34,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888432859] [2023-08-04 04:10:34,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888432859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:10:34,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:10:34,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:10:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917821226] [2023-08-04 04:10:34,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:10:34,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:10:34,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:10:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:10:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:10:34,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 478 [2023-08-04 04:10:34,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:10:34,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 478 [2023-08-04 04:10:34,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:10:34,928 INFO L124 PetriNetUnfolderBase]: 45/107 cut-off events. [2023-08-04 04:10:34,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:10:34,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 107 events. 45/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 242 event pairs, 30 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 196. Up to 93 conditions per place. [2023-08-04 04:10:34,929 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 21 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-04 04:10:34,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 115 flow [2023-08-04 04:10:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:10:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:10:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-08-04 04:10:34,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45536959553695955 [2023-08-04 04:10:34,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-08-04 04:10:34,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-08-04 04:10:34,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:10:34,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-08-04 04:10:34,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,935 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 67 flow. Second operand 3 states and 653 transitions. [2023-08-04 04:10:34,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 115 flow [2023-08-04 04:10:34,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:10:34,936 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 79 flow [2023-08-04 04:10:34,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, 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} [2023-08-04 04:10:34,937 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-04 04:10:34,937 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 79 flow [2023-08-04 04:10:34,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:34,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:10:34,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:10:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:10:34,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:10:34,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:10:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash 804366018, now seen corresponding path program 1 times [2023-08-04 04:10:34,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:10:34,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614131996] [2023-08-04 04:10:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:34,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:10:34,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:10:34,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004485563] [2023-08-04 04:10:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:34,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:10:34,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:10:34,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:10:34,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:10:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:10:35,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:10:35,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:10:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:10:35,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:10:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:10:35,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:10:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614131996] [2023-08-04 04:10:35,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:10:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004485563] [2023-08-04 04:10:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004485563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:10:35,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:10:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-04 04:10:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741292256] [2023-08-04 04:10:35,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:10:35,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:10:35,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:10:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:10:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:10:35,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-04 04:10:35,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 211.33333333333334) internal successors, (1268), 6 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:35,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:10:35,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-04 04:10:35,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:10:35,534 INFO L124 PetriNetUnfolderBase]: 45/113 cut-off events. [2023-08-04 04:10:35,534 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:10:35,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 113 events. 45/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 30 based on Foata normal form. 6/99 useless extension candidates. Maximal degree in co-relation 203. Up to 93 conditions per place. [2023-08-04 04:10:35,535 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 21 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2023-08-04 04:10:35,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 143 flow [2023-08-04 04:10:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:10:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:10:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1282 transitions. [2023-08-04 04:10:35,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44700139470013944 [2023-08-04 04:10:35,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1282 transitions. [2023-08-04 04:10:35,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1282 transitions. [2023-08-04 04:10:35,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:10:35,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1282 transitions. [2023-08-04 04:10:35,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.66666666666666) internal successors, (1282), 6 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:35,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:35,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:35,545 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 79 flow. Second operand 6 states and 1282 transitions. [2023-08-04 04:10:35,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 143 flow [2023-08-04 04:10:35,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 04:10:35,546 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 117 flow [2023-08-04 04:10:35,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, 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} [2023-08-04 04:10:35,547 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-08-04 04:10:35,547 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 117 flow [2023-08-04 04:10:35,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.33333333333334) internal successors, (1268), 6 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:35,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:10:35,548 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:10:35,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:10:35,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:10:35,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:10:35,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:10:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash 351619624, now seen corresponding path program 2 times [2023-08-04 04:10:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:10:35,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65354692] [2023-08-04 04:10:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:35,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:10:35,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:10:35,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531181521] [2023-08-04 04:10:35,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:10:35,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:10:35,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:10:35,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:10:35,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:10:36,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:10:36,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:10:36,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-04 04:10:36,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:10:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:10:36,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:10:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:10:36,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:10:36,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65354692] [2023-08-04 04:10:36,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:10:36,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531181521] [2023-08-04 04:10:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531181521] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:10:36,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:10:36,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-04 04:10:36,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386599247] [2023-08-04 04:10:36,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:10:36,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-04 04:10:36,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:10:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-04 04:10:36,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-04 04:10:36,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-04 04:10:36,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 117 flow. Second operand has 12 states, 12 states have (on average 210.66666666666666) internal successors, (2528), 12 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:36,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:10:36,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-04 04:10:36,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:10:36,723 INFO L124 PetriNetUnfolderBase]: 45/125 cut-off events. [2023-08-04 04:10:36,723 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-04 04:10:36,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 125 events. 45/125 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 303 event pairs, 30 based on Foata normal form. 12/117 useless extension candidates. Maximal degree in co-relation 199. Up to 93 conditions per place. [2023-08-04 04:10:36,724 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 21 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2023-08-04 04:10:36,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 217 flow [2023-08-04 04:10:36,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 04:10:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 04:10:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2545 transitions. [2023-08-04 04:10:36,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436889818688982 [2023-08-04 04:10:36,729 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2545 transitions. [2023-08-04 04:10:36,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2545 transitions. [2023-08-04 04:10:36,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:10:36,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2545 transitions. [2023-08-04 04:10:36,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 212.08333333333334) internal successors, (2545), 12 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:36,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:36,745 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:36,745 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 117 flow. Second operand 12 states and 2545 transitions. [2023-08-04 04:10:36,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 217 flow [2023-08-04 04:10:36,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 203 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-04 04:10:36,747 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 199 flow [2023-08-04 04:10:36,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, 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} [2023-08-04 04:10:36,748 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-04 04:10:36,748 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 199 flow [2023-08-04 04:10:36,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.66666666666666) internal successors, (2528), 12 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:36,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:10:36,749 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:10:36,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:10:36,958 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 [2023-08-04 04:10:36,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:10:36,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:10:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash 965878760, now seen corresponding path program 3 times [2023-08-04 04:10:36,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:10:36,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447293112] [2023-08-04 04:10:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:10:37,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:10:37,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437853092] [2023-08-04 04:10:37,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 04:10:37,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:10:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:10:37,063 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) [2023-08-04 04:10:37,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:10:37,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-04 04:10:37,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:10:37,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:10:37,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:10:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-04 04:10:37,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:10:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-04 04:10:37,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:10:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447293112] [2023-08-04 04:10:37,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:10:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437853092] [2023-08-04 04:10:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437853092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:10:37,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:10:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-04 04:10:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656941289] [2023-08-04 04:10:37,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:10:37,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:10:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:10:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:10:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:10:37,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-04 04:10:37,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:37,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:10:37,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-04 04:10:37,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:10:37,859 INFO L124 PetriNetUnfolderBase]: 47/152 cut-off events. [2023-08-04 04:10:37,859 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-04 04:10:37,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 152 events. 47/152 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 241 event pairs, 30 based on Foata normal form. 3/135 useless extension candidates. Maximal degree in co-relation 310. Up to 87 conditions per place. [2023-08-04 04:10:37,887 INFO L140 encePairwiseOnDemand]: 474/478 looper letters, 65 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-04 04:10:37,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 690 flow [2023-08-04 04:10:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:10:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:10:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1288 transitions. [2023-08-04 04:10:37,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490934449093445 [2023-08-04 04:10:37,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1288 transitions. [2023-08-04 04:10:37,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1288 transitions. [2023-08-04 04:10:37,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:10:37,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1288 transitions. [2023-08-04 04:10:37,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:37,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:37,901 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:37,901 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 199 flow. Second operand 6 states and 1288 transitions. [2023-08-04 04:10:37,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 690 flow [2023-08-04 04:10:37,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 496 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-04 04:10:37,905 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 234 flow [2023-08-04 04:10:37,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, 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} [2023-08-04 04:10:37,906 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2023-08-04 04:10:37,906 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 234 flow [2023-08-04 04:10:37,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:37,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:10:37,907 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:10:37,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:10:38,113 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 [2023-08-04 04:10:38,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:10:38,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:10:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1171471154, now seen corresponding path program 4 times [2023-08-04 04:10:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:10:38,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528138324] [2023-08-04 04:10:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:38,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:10:38,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:10:38,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411900165] [2023-08-04 04:10:38,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 04:10:38,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:10:38,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:10:38,444 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) [2023-08-04 04:10:38,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:10:40,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 04:10:40,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:10:40,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 9518 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-04 04:10:40,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:10:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-08-04 04:10:40,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:10:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-08-04 04:10:41,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:10:41,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528138324] [2023-08-04 04:10:41,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:10:41,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411900165] [2023-08-04 04:10:41,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411900165] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:10:41,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:10:41,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-04 04:10:41,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694015761] [2023-08-04 04:10:41,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:10:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-04 04:10:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:10:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-04 04:10:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-04 04:10:41,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-04 04:10:41,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 234 flow. Second operand has 24 states, 24 states have (on average 210.45833333333334) internal successors, (5051), 24 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:41,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:10:41,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-04 04:10:41,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:10:43,099 INFO L124 PetriNetUnfolderBase]: 47/200 cut-off events. [2023-08-04 04:10:43,099 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-08-04 04:10:43,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 200 events. 47/200 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 241 event pairs, 30 based on Foata normal form. 48/228 useless extension candidates. Maximal degree in co-relation 423. Up to 99 conditions per place. [2023-08-04 04:10:43,100 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 23 selfloop transitions, 24 changer transitions 0/51 dead transitions. [2023-08-04 04:10:43,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 51 transitions, 400 flow [2023-08-04 04:10:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-04 04:10:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-04 04:10:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5071 transitions. [2023-08-04 04:10:43,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44203277545327757 [2023-08-04 04:10:43,107 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5071 transitions. [2023-08-04 04:10:43,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5071 transitions. [2023-08-04 04:10:43,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:10:43,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5071 transitions. [2023-08-04 04:10:43,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 211.29166666666666) internal successors, (5071), 24 states have internal predecessors, (5071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:43,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:43,125 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:43,125 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 234 flow. Second operand 24 states and 5071 transitions. [2023-08-04 04:10:43,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 51 transitions, 400 flow [2023-08-04 04:10:43,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 51 transitions, 392 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-04 04:10:43,128 INFO L231 Difference]: Finished difference. Result has 89 places, 51 transitions, 468 flow [2023-08-04 04:10:43,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, 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} [2023-08-04 04:10:43,128 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 64 predicate places. [2023-08-04 04:10:43,129 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 51 transitions, 468 flow [2023-08-04 04:10:43,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 210.45833333333334) internal successors, (5051), 24 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:10:43,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:10:43,130 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:10:43,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 04:10:43,352 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 [2023-08-04 04:10:43,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:10:43,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:10:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1437136078, now seen corresponding path program 5 times [2023-08-04 04:10:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:10:43,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321016632] [2023-08-04 04:10:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:10:43,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:10:44,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:10:44,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950848065] [2023-08-04 04:10:44,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-04 04:10:44,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:10:44,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:10:44,191 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) [2023-08-04 04:10:44,210 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... [2023-08-04 04:24:44,575 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 [2023-08-04 04:24:44,589 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 [2023-08-04 04:24:45,623 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 [2023-08-04 04:24:45,789 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-04 04:24:45,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-04 04:24:45,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-04 04:24:45,833 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:24:45,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:24:45,833 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 106 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-04 04:24:45,834 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:24:45,835 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-04 04:24:45,837 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT (1/2) [2023-08-04 04:24:45,839 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-04 04:24:45,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:24:45,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:24:45 BasicIcfg [2023-08-04 04:24:45,841 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:24:45,842 INFO L158 Benchmark]: Toolchain (without parser) took 884018.01ms. Allocated memory was 356.5MB in the beginning and 683.7MB in the end (delta: 327.2MB). Free memory was 296.9MB in the beginning and 399.2MB in the end (delta: -102.3MB). Peak memory consumption was 226.7MB. Max. memory is 16.0GB. [2023-08-04 04:24:45,842 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 356.5MB. Free memory was 307.8MB in the beginning and 307.7MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:24:45,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.77ms. Allocated memory is still 356.5MB. Free memory was 296.6MB in the beginning and 265.4MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-04 04:24:45,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.65ms. Allocated memory was 356.5MB in the beginning and 534.8MB in the end (delta: 178.3MB). Free memory was 265.4MB in the beginning and 501.1MB in the end (delta: -235.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.0GB. [2023-08-04 04:24:45,843 INFO L158 Benchmark]: Boogie Preprocessor took 67.68ms. Allocated memory is still 534.8MB. Free memory was 501.1MB in the beginning and 497.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 04:24:45,843 INFO L158 Benchmark]: RCFGBuilder took 575.99ms. Allocated memory is still 534.8MB. Free memory was 497.9MB in the beginning and 472.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-04 04:24:45,843 INFO L158 Benchmark]: TraceAbstraction took 882667.69ms. Allocated memory was 534.8MB in the beginning and 683.7MB in the end (delta: 148.9MB). Free memory was 471.7MB in the beginning and 399.2MB in the end (delta: 72.5MB). Peak memory consumption was 221.4MB. Max. memory is 16.0GB. [2023-08-04 04:24:45,952 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 356.5MB. Free memory was 307.8MB in the beginning and 307.7MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 633.77ms. Allocated memory is still 356.5MB. Free memory was 296.6MB in the beginning and 265.4MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.65ms. Allocated memory was 356.5MB in the beginning and 534.8MB in the end (delta: 178.3MB). Free memory was 265.4MB in the beginning and 501.1MB in the end (delta: -235.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.0GB. * Boogie Preprocessor took 67.68ms. Allocated memory is still 534.8MB. Free memory was 501.1MB in the beginning and 497.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 575.99ms. Allocated memory is still 534.8MB. Free memory was 497.9MB in the beginning and 472.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 882667.69ms. Allocated memory was 534.8MB in the beginning and 683.7MB in the end (delta: 148.9MB). Free memory was 471.7MB in the beginning and 399.2MB in the end (delta: 72.5MB). Peak memory consumption was 221.4MB. 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] - GenericResultAtLocation [Line: 1084]: Unsoundness Warning unspecified type, defaulting to int C: long [1084] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.6s, 209 PlacesBefore, 25 PlacesAfterwards, 232 TransitionsBefore, 36 TransitionsAfterwards, 3828 CoEnabledTransitionPairs, 7 FixpointIterations, 115 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 19 ConcurrentYvCompositions, 12 ChoiceCompositions, 241 TotalNumberOfCompositions, 3403 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3006, independent: 2935, independent conditional: 0, independent unconditional: 2935, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1965, independent: 1944, independent conditional: 0, independent unconditional: 1944, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3006, independent: 991, independent conditional: 0, independent unconditional: 991, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 1965, unknown conditional: 0, unknown unconditional: 1965] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 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, 282 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: 882.5s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 30.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 3 mSDtfsCounter, 646 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: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 125 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 SizeOfPredicates, 3 NumberOfNonLiveVariables, 11165 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