/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:19:13,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:19:13,477 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:19:13,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:19:13,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:19:13,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:19:13,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:19:13,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:19:13,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:19:13,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:19:13,513 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:19:13,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:19:13,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:19:13,514 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:19:13,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:19:13,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:19:13,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:19:13,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:19:13,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:19:13,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:19:13,516 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:19:13,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:19:13,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:19:13,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:19:13,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:19:13,517 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:19:13,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:19:13,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:19:13,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:19:13,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:19:13,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:19:13,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:19:13,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:19:13,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:19:13,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:19:13,520 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:19:13,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:19:13,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:19:13,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:19:13,844 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:19:13,846 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:19:13,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-26 22:19:15,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:19:15,374 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:19:15,375 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-26 22:19:15,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2129a57a9/3360e92053094a64974ad03c04115520/FLAG08e5288f5 [2023-08-26 22:19:15,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2129a57a9/3360e92053094a64974ad03c04115520 [2023-08-26 22:19:15,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:19:15,417 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:19:15,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:19:15,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:19:15,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:19:15,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:19:15" (1/1) ... [2023-08-26 22:19:15,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c56763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:15, skipping insertion in model container [2023-08-26 22:19:15,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:19:15" (1/1) ... [2023-08-26 22:19:15,476 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:19:15,846 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,846 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,847 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,847 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:19:15,889 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:19:15,903 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 22:19:15,904 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 22:19:15,931 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,931 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,932 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,932 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:19:15,940 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1071] [2023-08-26 22:19:15,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:19:16,011 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:19:16,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16 WrapperNode [2023-08-26 22:19:16,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:19:16,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:19:16,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:19:16,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:19:16,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,059 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 172 [2023-08-26 22:19:16,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:19:16,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:19:16,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:19:16,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:19:16,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:19:16,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:19:16,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:19:16,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:19:16,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (1/1) ... [2023-08-26 22:19:16,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:19:16,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:19:16,130 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) [2023-08-26 22:19:16,140 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 [2023-08-26 22:19:16,160 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-26 22:19:16,161 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-26 22:19:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:19:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 22:19:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:19:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:19:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:19:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:19:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 22:19:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:19:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 22:19:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:19:16,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:19:16,164 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:19:16,284 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:19:16,285 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:19:16,598 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:19:16,606 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:19:16,606 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 22:19:16,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:19:16 BoogieIcfgContainer [2023-08-26 22:19:16,608 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:19:16,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:19:16,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:19:16,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:19:16,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:19:15" (1/3) ... [2023-08-26 22:19:16,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d61754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:19:16, skipping insertion in model container [2023-08-26 22:19:16,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:19:16" (2/3) ... [2023-08-26 22:19:16,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d61754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:19:16, skipping insertion in model container [2023-08-26 22:19:16,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:19:16" (3/3) ... [2023-08-26 22:19:16,615 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-08-26 22:19:16,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:19:16,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-26 22:19:16,629 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:19:16,709 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 22:19:16,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 242 transitions, 494 flow [2023-08-26 22:19:16,835 INFO L124 PetriNetUnfolderBase]: 17/240 cut-off events. [2023-08-26 22:19:16,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:19:16,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 240 events. 17/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 542 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-26 22:19:16,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 242 transitions, 494 flow [2023-08-26 22:19:16,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 240 transitions, 486 flow [2023-08-26 22:19:16,854 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:19:16,862 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 240 transitions, 486 flow [2023-08-26 22:19:16,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 240 transitions, 486 flow [2023-08-26 22:19:16,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 486 flow [2023-08-26 22:19:16,901 INFO L124 PetriNetUnfolderBase]: 17/240 cut-off events. [2023-08-26 22:19:16,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:19:16,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 240 events. 17/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 543 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-26 22:19:16,909 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-26 22:19:37,220 WARN L234 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:19:49,298 WARN L234 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:20:05,892 WARN L234 SmtUtils]: Spent 11.37s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:20:21,197 WARN L234 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:20:27,822 WARN L234 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:20:27,829 INFO L134 LiptonReduction]: Checked pairs total: 7085 [2023-08-26 22:20:27,829 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-08-26 22:20:27,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:20:27,851 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ed41e93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:20:27,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-26 22:20:27,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:20:27,859 INFO L124 PetriNetUnfolderBase]: 2/6 cut-off events. [2023-08-26 22:20:27,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:20:27,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:27,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:20:27,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:27,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash 817299, now seen corresponding path program 1 times [2023-08-26 22:20:27,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:27,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222670229] [2023-08-26 22:20:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:27,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:27,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:27,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948487017] [2023-08-26 22:20:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:27,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:27,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:27,984 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) [2023-08-26 22:20:27,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:20:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:20:28,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:20:28,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:20:28,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:20:28,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222670229] [2023-08-26 22:20:28,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948487017] [2023-08-26 22:20:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948487017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:20:28,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:20:28,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:20:28,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114065170] [2023-08-26 22:20:28,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:20:28,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:20:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:20:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:20:28,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-26 22:20:28,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:20:28,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:28,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-26 22:20:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:28,554 INFO L124 PetriNetUnfolderBase]: 436/710 cut-off events. [2023-08-26 22:20:28,554 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 22:20:28,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2776 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-08-26 22:20:28,560 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-26 22:20:28,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-26 22:20:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:20:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:20:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-26 22:20:28,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458994708994709 [2023-08-26 22:20:28,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-26 22:20:28,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-26 22:20:28,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:28,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-26 22:20:28,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 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) [2023-08-26 22:20:28,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:28,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:28,600 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 694 transitions. [2023-08-26 22:20:28,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-26 22:20:28,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:20:28,605 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-26 22:20:28,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-26 22:20:28,610 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-26 22:20:28,610 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-26 22:20:28,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:20:28,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:28,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:20:28,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:20:28,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-26 22:20:28,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:28,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 817494, now seen corresponding path program 1 times [2023-08-26 22:20:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:28,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805262559] [2023-08-26 22:20:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:28,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:28,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840031604] [2023-08-26 22:20:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:28,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:28,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:28,905 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) [2023-08-26 22:20:28,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:20:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:20:29,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:20:29,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:20:29,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:20:29,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805262559] [2023-08-26 22:20:29,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840031604] [2023-08-26 22:20:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840031604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:20:29,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:20:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:20:29,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324945948] [2023-08-26 22:20:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:20:29,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:20:29,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:20:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:20:29,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-26 22:20:29,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 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) [2023-08-26 22:20:29,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:29,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-26 22:20:29,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:29,285 INFO L124 PetriNetUnfolderBase]: 435/708 cut-off events. [2023-08-26 22:20:29,285 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:20:29,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2746 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 703 conditions per place. [2023-08-26 22:20:29,291 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-26 22:20:29,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 176 flow [2023-08-26 22:20:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:20:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:20:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-08-26 22:20:29,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2023-08-26 22:20:29,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-08-26 22:20:29,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-08-26 22:20:29,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:29,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-08-26 22:20:29,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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) [2023-08-26 22:20:29,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:29,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:29,300 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 692 transitions. [2023-08-26 22:20:29,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 176 flow [2023-08-26 22:20:29,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:20:29,302 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow [2023-08-26 22:20:29,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-26 22:20:29,303 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-26 22:20:29,303 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow [2023-08-26 22:20:29,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 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) [2023-08-26 22:20:29,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:29,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-26 22:20:29,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:29,510 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,SelfDestructingSolverStorable1 [2023-08-26 22:20:29,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:29,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 785618910, now seen corresponding path program 1 times [2023-08-26 22:20:29,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:29,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817544713] [2023-08-26 22:20:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:29,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:29,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256671734] [2023-08-26 22:20:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:29,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:29,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:29,560 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) [2023-08-26 22:20:29,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:20:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:20:29,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 22:20:29,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:20:29,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:20:29,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:29,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817544713] [2023-08-26 22:20:29,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:29,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256671734] [2023-08-26 22:20:29,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256671734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:20:29,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:20:29,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:20:29,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232121500] [2023-08-26 22:20:29,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:20:29,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:20:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:29,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:20:29,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:20:29,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-26 22:20:29,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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) [2023-08-26 22:20:29,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:29,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-26 22:20:29,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:29,892 INFO L124 PetriNetUnfolderBase]: 435/712 cut-off events. [2023-08-26 22:20:29,893 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:20:29,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 712 events. 435/712 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2764 event pairs, 340 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1419. Up to 709 conditions per place. [2023-08-26 22:20:29,897 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-26 22:20:29,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 198 flow [2023-08-26 22:20:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:20:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:20:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-26 22:20:29,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460978835978836 [2023-08-26 22:20:29,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-26 22:20:29,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-26 22:20:29,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:29,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-26 22:20:29,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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) [2023-08-26 22:20:29,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:29,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:29,905 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 697 transitions. [2023-08-26 22:20:29,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 198 flow [2023-08-26 22:20:29,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:20:29,906 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 114 flow [2023-08-26 22:20:29,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-26 22:20:29,907 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-26 22:20:29,907 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 114 flow [2023-08-26 22:20:29,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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) [2023-08-26 22:20:29,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:29,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:20:29,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:30,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:30,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:30,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1414916052, now seen corresponding path program 1 times [2023-08-26 22:20:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:30,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181391165] [2023-08-26 22:20:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:30,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:30,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:30,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925892066] [2023-08-26 22:20:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:30,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:30,172 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) [2023-08-26 22:20:30,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:20:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:20:30,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:20:30,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:20:30,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:20:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:20:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181391165] [2023-08-26 22:20:30,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:30,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925892066] [2023-08-26 22:20:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925892066] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:20:30,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:20:30,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-26 22:20:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545033856] [2023-08-26 22:20:30,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:20:30,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:20:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:20:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:20:30,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-26 22:20:30,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 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) [2023-08-26 22:20:30,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:30,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-26 22:20:30,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:30,795 INFO L124 PetriNetUnfolderBase]: 437/724 cut-off events. [2023-08-26 22:20:30,795 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:20:30,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 724 events. 437/724 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2823 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1435. Up to 707 conditions per place. [2023-08-26 22:20:30,799 INFO L140 encePairwiseOnDemand]: 497/504 looper letters, 43 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-08-26 22:20:30,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 258 flow [2023-08-26 22:20:30,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:20:30,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:20:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1366 transitions. [2023-08-26 22:20:30,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45171957671957674 [2023-08-26 22:20:30,803 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1366 transitions. [2023-08-26 22:20:30,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1366 transitions. [2023-08-26 22:20:30,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:30,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1366 transitions. [2023-08-26 22:20:30,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.66666666666666) internal successors, (1366), 6 states have internal predecessors, (1366), 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) [2023-08-26 22:20:30,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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) [2023-08-26 22:20:30,813 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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) [2023-08-26 22:20:30,814 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 114 flow. Second operand 6 states and 1366 transitions. [2023-08-26 22:20:30,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 258 flow [2023-08-26 22:20:30,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:20:30,816 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 188 flow [2023-08-26 22:20:30,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-26 22:20:30,817 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-08-26 22:20:30,817 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 188 flow [2023-08-26 22:20:30,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 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) [2023-08-26 22:20:30,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:30,818 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-26 22:20:30,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:31,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:31,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:31,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash -258458786, now seen corresponding path program 2 times [2023-08-26 22:20:31,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:31,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348853015] [2023-08-26 22:20:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:31,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:31,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:31,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300587176] [2023-08-26 22:20:31,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:20:31,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:31,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:31,086 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) [2023-08-26 22:20:31,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 22:20:31,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:20:31,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:20:31,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:20:31,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-26 22:20:31,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:20:31,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:31,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348853015] [2023-08-26 22:20:31,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:31,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300587176] [2023-08-26 22:20:31,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300587176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:20:31,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:20:31,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:20:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728645130] [2023-08-26 22:20:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:20:31,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:20:31,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:20:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:20:31,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-26 22:20:31,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-08-26 22:20:31,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:31,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-26 22:20:31,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:31,601 INFO L124 PetriNetUnfolderBase]: 437/722 cut-off events. [2023-08-26 22:20:31,601 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 22:20:31,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 722 events. 437/722 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2804 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1449. Up to 721 conditions per place. [2023-08-26 22:20:31,605 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-26 22:20:31,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 276 flow [2023-08-26 22:20:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:20:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:20:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-26 22:20:31,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458994708994709 [2023-08-26 22:20:31,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-26 22:20:31,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-26 22:20:31,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:31,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-26 22:20:31,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 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) [2023-08-26 22:20:31,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:31,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:20:31,613 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 188 flow. Second operand 3 states and 694 transitions. [2023-08-26 22:20:31,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 276 flow [2023-08-26 22:20:31,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 266 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 22:20:31,616 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 188 flow [2023-08-26 22:20:31,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-26 22:20:31,617 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2023-08-26 22:20:31,617 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 188 flow [2023-08-26 22:20:31,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-08-26 22:20:31,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:31,618 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-26 22:20:31,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:31,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:31,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:31,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:31,824 INFO L85 PathProgramCache]: Analyzing trace with hash 577719030, now seen corresponding path program 3 times [2023-08-26 22:20:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:31,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840205712] [2023-08-26 22:20:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:31,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:31,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530548972] [2023-08-26 22:20:31,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:20:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:31,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:31,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:20:31,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 22:20:32,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 22:20:32,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:20:32,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:20:32,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 22:20:32,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:20:32,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:32,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840205712] [2023-08-26 22:20:32,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:32,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530548972] [2023-08-26 22:20:32,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530548972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:20:32,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:20:32,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:20:32,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652425940] [2023-08-26 22:20:32,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:20:32,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:20:32,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:20:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:20:32,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 504 [2023-08-26 22:20:32,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 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) [2023-08-26 22:20:32,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:32,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 504 [2023-08-26 22:20:32,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:32,570 INFO L124 PetriNetUnfolderBase]: 436/717 cut-off events. [2023-08-26 22:20:32,570 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-26 22:20:32,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 717 events. 436/717 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2775 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1443. Up to 698 conditions per place. [2023-08-26 22:20:32,574 INFO L140 encePairwiseOnDemand]: 496/504 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-26 22:20:32,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 294 flow [2023-08-26 22:20:32,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:20:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:20:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1295 transitions. [2023-08-26 22:20:32,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824074074074076 [2023-08-26 22:20:32,578 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1295 transitions. [2023-08-26 22:20:32,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1295 transitions. [2023-08-26 22:20:32,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:32,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1295 transitions. [2023-08-26 22:20:32,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.83333333333334) internal successors, (1295), 6 states have internal predecessors, (1295), 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) [2023-08-26 22:20:32,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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) [2023-08-26 22:20:32,586 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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) [2023-08-26 22:20:32,587 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 188 flow. Second operand 6 states and 1295 transitions. [2023-08-26 22:20:32,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 294 flow [2023-08-26 22:20:32,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:20:32,589 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 193 flow [2023-08-26 22:20:32,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-26 22:20:32,590 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-26 22:20:32,590 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 193 flow [2023-08-26 22:20:32,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 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) [2023-08-26 22:20:32,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:32,591 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-26 22:20:32,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:32,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:32,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:32,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 577719143, now seen corresponding path program 1 times [2023-08-26 22:20:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474979340] [2023-08-26 22:20:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:32,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:32,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42197150] [2023-08-26 22:20:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:32,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:32,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:32,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:20:32,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 22:20:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:20:33,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:20:33,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:20:33,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:20:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:20:33,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:33,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474979340] [2023-08-26 22:20:33,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:33,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42197150] [2023-08-26 22:20:33,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42197150] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:20:33,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:20:33,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-26 22:20:33,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21917443] [2023-08-26 22:20:33,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:20:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 22:20:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 22:20:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 22:20:33,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-26 22:20:33,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 193 flow. Second operand has 12 states, 12 states have (on average 219.33333333333334) internal successors, (2632), 12 states have internal predecessors, (2632), 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) [2023-08-26 22:20:33,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:33,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-26 22:20:33,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:34,504 INFO L124 PetriNetUnfolderBase]: 436/735 cut-off events. [2023-08-26 22:20:34,504 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-08-26 22:20:34,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 735 events. 436/735 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2944 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1469. Up to 706 conditions per place. [2023-08-26 22:20:34,508 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-08-26 22:20:34,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 407 flow [2023-08-26 22:20:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:20:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:20:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2682 transitions. [2023-08-26 22:20:34,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2023-08-26 22:20:34,516 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2682 transitions. [2023-08-26 22:20:34,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2682 transitions. [2023-08-26 22:20:34,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:34,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2682 transitions. [2023-08-26 22:20:34,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 223.5) internal successors, (2682), 12 states have internal predecessors, (2682), 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) [2023-08-26 22:20:34,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 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) [2023-08-26 22:20:34,533 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 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) [2023-08-26 22:20:34,533 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 193 flow. Second operand 12 states and 2682 transitions. [2023-08-26 22:20:34,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 407 flow [2023-08-26 22:20:34,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 401 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 22:20:34,537 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 316 flow [2023-08-26 22:20:34,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-26 22:20:34,537 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-08-26 22:20:34,538 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 316 flow [2023-08-26 22:20:34,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 219.33333333333334) internal successors, (2632), 12 states have internal predecessors, (2632), 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) [2023-08-26 22:20:34,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:34,539 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-26 22:20:34,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:34,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:34,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:34,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash 918799911, now seen corresponding path program 2 times [2023-08-26 22:20:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:34,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134997076] [2023-08-26 22:20:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:34,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:34,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069134824] [2023-08-26 22:20:34,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:20:34,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:34,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:20:34,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 22:20:35,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:20:35,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:20:35,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 22:20:35,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:20:35,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:20:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:20:35,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:35,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134997076] [2023-08-26 22:20:35,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:35,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069134824] [2023-08-26 22:20:35,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069134824] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:20:35,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:20:35,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-26 22:20:35,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982902429] [2023-08-26 22:20:35,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:20:35,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 22:20:35,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:35,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 22:20:35,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-26 22:20:35,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-26 22:20:35,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 316 flow. Second operand has 24 states, 24 states have (on average 219.16666666666666) internal successors, (5260), 24 states have internal predecessors, (5260), 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) [2023-08-26 22:20:35,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:35,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-26 22:20:35,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:37,841 INFO L124 PetriNetUnfolderBase]: 436/771 cut-off events. [2023-08-26 22:20:37,841 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2023-08-26 22:20:37,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 771 events. 436/771 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3024 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1550. Up to 706 conditions per place. [2023-08-26 22:20:37,846 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-08-26 22:20:37,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 784 flow [2023-08-26 22:20:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 22:20:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 22:20:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5334 transitions. [2023-08-26 22:20:37,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2023-08-26 22:20:37,859 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5334 transitions. [2023-08-26 22:20:37,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5334 transitions. [2023-08-26 22:20:37,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:37,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5334 transitions. [2023-08-26 22:20:37,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 222.25) internal successors, (5334), 24 states have internal predecessors, (5334), 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) [2023-08-26 22:20:37,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 504.0) internal successors, (12600), 25 states have internal predecessors, (12600), 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) [2023-08-26 22:20:37,891 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 504.0) internal successors, (12600), 25 states have internal predecessors, (12600), 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) [2023-08-26 22:20:37,891 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 316 flow. Second operand 24 states and 5334 transitions. [2023-08-26 22:20:37,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 784 flow [2023-08-26 22:20:37,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 716 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-26 22:20:37,896 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 529 flow [2023-08-26 22:20:37,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=529, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-08-26 22:20:37,897 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2023-08-26 22:20:37,897 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 529 flow [2023-08-26 22:20:37,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 219.16666666666666) internal successors, (5260), 24 states have internal predecessors, (5260), 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) [2023-08-26 22:20:37,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:37,899 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-26 22:20:37,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:38,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-26 22:20:38,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:38,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1431073881, now seen corresponding path program 3 times [2023-08-26 22:20:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:38,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196435314] [2023-08-26 22:20:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:38,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:38,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:38,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438822829] [2023-08-26 22:20:38,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:20:38,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:38,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:20:38,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 22:20:39,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 22:20:39,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:20:39,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 22:20:39,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-26 22:20:39,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:20:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-26 22:20:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196435314] [2023-08-26 22:20:41,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438822829] [2023-08-26 22:20:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438822829] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 22:20:41,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:20:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-26 22:20:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299663866] [2023-08-26 22:20:41,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:20:41,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:20:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:41,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:20:41,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:20:41,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-26 22:20:41,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 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) [2023-08-26 22:20:41,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:41,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-26 22:20:41,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:43,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-26 22:20:44,035 INFO L124 PetriNetUnfolderBase]: 435/748 cut-off events. [2023-08-26 22:20:44,035 INFO L125 PetriNetUnfolderBase]: For 662/662 co-relation queries the response was YES. [2023-08-26 22:20:44,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 748 events. 435/748 cut-off events. For 662/662 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2889 event pairs, 340 based on Foata normal form. 22/494 useless extension candidates. Maximal degree in co-relation 1574. Up to 698 conditions per place. [2023-08-26 22:20:44,041 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 53 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-26 22:20:44,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 58 transitions, 549 flow [2023-08-26 22:20:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:20:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:20:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 896 transitions. [2023-08-26 22:20:44,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-26 22:20:44,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 896 transitions. [2023-08-26 22:20:44,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 896 transitions. [2023-08-26 22:20:44,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:44,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 896 transitions. [2023-08-26 22:20:44,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-08-26 22:20:44,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 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) [2023-08-26 22:20:44,048 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 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) [2023-08-26 22:20:44,049 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 529 flow. Second operand 4 states and 896 transitions. [2023-08-26 22:20:44,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 58 transitions, 549 flow [2023-08-26 22:20:44,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 58 transitions, 399 flow, removed 53 selfloop flow, removed 17 redundant places. [2023-08-26 22:20:44,056 INFO L231 Difference]: Finished difference. Result has 86 places, 58 transitions, 293 flow [2023-08-26 22:20:44,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2023-08-26 22:20:44,058 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2023-08-26 22:20:44,058 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 293 flow [2023-08-26 22:20:44,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 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) [2023-08-26 22:20:44,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:44,058 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:20:44,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:44,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:44,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:44,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash -512968736, now seen corresponding path program 1 times [2023-08-26 22:20:44,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:44,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093683488] [2023-08-26 22:20:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:44,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:44,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:44,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333736944] [2023-08-26 22:20:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:44,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:44,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:44,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:20:44,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 22:20:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:20:46,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-26 22:20:46,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:20:46,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:20:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:20:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093683488] [2023-08-26 22:20:46,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333736944] [2023-08-26 22:20:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333736944] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:20:46,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:20:46,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-26 22:20:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720001385] [2023-08-26 22:20:46,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:20:46,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 22:20:46,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 22:20:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-26 22:20:46,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-26 22:20:46,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 293 flow. Second operand has 32 states, 32 states have (on average 219.25) internal successors, (7016), 32 states have internal predecessors, (7016), 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) [2023-08-26 22:20:46,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:46,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-26 22:20:46,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:48,995 INFO L124 PetriNetUnfolderBase]: 435/764 cut-off events. [2023-08-26 22:20:48,996 INFO L125 PetriNetUnfolderBase]: For 5023/5023 co-relation queries the response was YES. [2023-08-26 22:20:48,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 764 events. 435/764 cut-off events. For 5023/5023 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2889 event pairs, 340 based on Foata normal form. 16/504 useless extension candidates. Maximal degree in co-relation 1545. Up to 705 conditions per place. [2023-08-26 22:20:49,001 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 33 selfloop transitions, 33 changer transitions 0/66 dead transitions. [2023-08-26 22:20:49,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 66 transitions, 473 flow [2023-08-26 22:20:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 22:20:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 22:20:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7047 transitions. [2023-08-26 22:20:49,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369419642857143 [2023-08-26 22:20:49,015 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7047 transitions. [2023-08-26 22:20:49,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7047 transitions. [2023-08-26 22:20:49,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:49,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7047 transitions. [2023-08-26 22:20:49,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 220.21875) internal successors, (7047), 32 states have internal predecessors, (7047), 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) [2023-08-26 22:20:49,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 504.0) internal successors, (16632), 33 states have internal predecessors, (16632), 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) [2023-08-26 22:20:49,046 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 504.0) internal successors, (16632), 33 states have internal predecessors, (16632), 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) [2023-08-26 22:20:49,046 INFO L175 Difference]: Start difference. First operand has 86 places, 58 transitions, 293 flow. Second operand 32 states and 7047 transitions. [2023-08-26 22:20:49,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 66 transitions, 473 flow [2023-08-26 22:20:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 66 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:20:49,051 INFO L231 Difference]: Finished difference. Result has 122 places, 66 transitions, 447 flow [2023-08-26 22:20:49,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=447, PETRI_PLACES=122, PETRI_TRANSITIONS=66} [2023-08-26 22:20:49,053 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2023-08-26 22:20:49,053 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 66 transitions, 447 flow [2023-08-26 22:20:49,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 219.25) internal successors, (7016), 32 states have internal predecessors, (7016), 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) [2023-08-26 22:20:49,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:49,055 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:20:49,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:49,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-26 22:20:49,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:49,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2064482016, now seen corresponding path program 2 times [2023-08-26 22:20:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741538056] [2023-08-26 22:20:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:49,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:49,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67243256] [2023-08-26 22:20:49,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:20:49,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:49,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:49,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:20:49,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 22:20:51,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:20:51,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:20:51,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 7160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:20:51,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:20:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-26 22:20:51,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:20:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-26 22:20:51,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:20:51,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741538056] [2023-08-26 22:20:51,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:20:51,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67243256] [2023-08-26 22:20:51,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67243256] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:20:51,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:20:51,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-26 22:20:51,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333116021] [2023-08-26 22:20:51,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:20:51,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:20:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:20:51,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:20:51,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:20:51,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-26 22:20:51,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 66 transitions, 447 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2023-08-26 22:20:51,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:20:51,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-26 22:20:51,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:20:52,523 INFO L124 PetriNetUnfolderBase]: 437/831 cut-off events. [2023-08-26 22:20:52,523 INFO L125 PetriNetUnfolderBase]: For 1771/1771 co-relation queries the response was YES. [2023-08-26 22:20:52,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2190 conditions, 831 events. 437/831 cut-off events. For 1771/1771 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2754 event pairs, 340 based on Foata normal form. 3/558 useless extension candidates. Maximal degree in co-relation 1589. Up to 699 conditions per place. [2023-08-26 22:20:52,529 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 157 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2023-08-26 22:20:52,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 163 transitions, 1593 flow [2023-08-26 22:20:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:20:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:20:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-08-26 22:20:52,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2023-08-26 22:20:52,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-08-26 22:20:52,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-08-26 22:20:52,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:20:52,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-08-26 22:20:52,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 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) [2023-08-26 22:20:52,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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) [2023-08-26 22:20:52,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 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) [2023-08-26 22:20:52,580 INFO L175 Difference]: Start difference. First operand has 122 places, 66 transitions, 447 flow. Second operand 6 states and 1336 transitions. [2023-08-26 22:20:52,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 163 transitions, 1593 flow [2023-08-26 22:20:52,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1207 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-08-26 22:20:52,590 INFO L231 Difference]: Finished difference. Result has 108 places, 69 transitions, 516 flow [2023-08-26 22:20:52,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=108, PETRI_TRANSITIONS=69} [2023-08-26 22:20:52,591 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2023-08-26 22:20:52,591 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 69 transitions, 516 flow [2023-08-26 22:20:52,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2023-08-26 22:20:52,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:20:52,592 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:20:52,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 22:20:52,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-26 22:20:52,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:20:52,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:20:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 894894867, now seen corresponding path program 1 times [2023-08-26 22:20:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:20:52,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973466060] [2023-08-26 22:20:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:20:54,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:20:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057590931] [2023-08-26 22:20:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:20:54,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:20:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:20:54,035 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:20:54,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 22:21:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:21:01,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 28345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:21:01,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:21:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-26 22:21:01,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:21:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-26 22:21:01,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:21:01,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973466060] [2023-08-26 22:21:01,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:21:01,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057590931] [2023-08-26 22:21:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057590931] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:21:01,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:21:01,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-26 22:21:01,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774722728] [2023-08-26 22:21:01,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:21:01,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 22:21:01,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:21:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 22:21:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 22:21:01,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-26 22:21:01,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 69 transitions, 516 flow. Second operand has 12 states, 12 states have (on average 217.75) internal successors, (2613), 12 states have internal predecessors, (2613), 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) [2023-08-26 22:21:01,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:21:01,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-26 22:21:01,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:21:02,836 INFO L124 PetriNetUnfolderBase]: 443/1029 cut-off events. [2023-08-26 22:21:02,836 INFO L125 PetriNetUnfolderBase]: For 5647/5647 co-relation queries the response was YES. [2023-08-26 22:21:02,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1029 events. 443/1029 cut-off events. For 5647/5647 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2759 event pairs, 340 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 1548. Up to 699 conditions per place. [2023-08-26 22:21:02,894 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 349 selfloop transitions, 12 changer transitions 0/361 dead transitions. [2023-08-26 22:21:02,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 361 transitions, 2897 flow [2023-08-26 22:21:02,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:21:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:21:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2647 transitions. [2023-08-26 22:21:02,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376653439153439 [2023-08-26 22:21:02,899 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2647 transitions. [2023-08-26 22:21:02,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2647 transitions. [2023-08-26 22:21:02,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:21:02,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2647 transitions. [2023-08-26 22:21:02,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.58333333333334) internal successors, (2647), 12 states have internal predecessors, (2647), 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) [2023-08-26 22:21:02,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 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) [2023-08-26 22:21:02,915 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 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) [2023-08-26 22:21:02,915 INFO L175 Difference]: Start difference. First operand has 108 places, 69 transitions, 516 flow. Second operand 12 states and 2647 transitions. [2023-08-26 22:21:02,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 361 transitions, 2897 flow [2023-08-26 22:21:02,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 361 transitions, 2895 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:21:02,931 INFO L231 Difference]: Finished difference. Result has 125 places, 76 transitions, 995 flow [2023-08-26 22:21:02,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=995, PETRI_PLACES=125, PETRI_TRANSITIONS=76} [2023-08-26 22:21:02,933 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2023-08-26 22:21:02,933 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 76 transitions, 995 flow [2023-08-26 22:21:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 217.75) internal successors, (2613), 12 states have internal predecessors, (2613), 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) [2023-08-26 22:21:02,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:21:02,934 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:21:03,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-26 22:21:03,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 22:21:03,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:21:03,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:21:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash -222091435, now seen corresponding path program 2 times [2023-08-26 22:21:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:21:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833604653] [2023-08-26 22:21:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:21:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:21:05,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:21:05,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512854505] [2023-08-26 22:21:05,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:21:05,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:21:05,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:21:05,769 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:21:05,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 22:21:14,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:21:14,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:21:14,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:21:14,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:21:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-26 22:21:14,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:21:14,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:21:14,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833604653] [2023-08-26 22:21:14,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:21:14,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512854505] [2023-08-26 22:21:14,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512854505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:21:14,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:21:14,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:21:14,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913651425] [2023-08-26 22:21:14,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:21:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:21:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:21:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:21:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:21:14,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 504 [2023-08-26 22:21:14,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 76 transitions, 995 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2023-08-26 22:21:14,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:21:14,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 504 [2023-08-26 22:21:14,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:21:14,930 INFO L124 PetriNetUnfolderBase]: 406/968 cut-off events. [2023-08-26 22:21:14,930 INFO L125 PetriNetUnfolderBase]: For 6224/6224 co-relation queries the response was YES. [2023-08-26 22:21:14,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 968 events. 406/968 cut-off events. For 6224/6224 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2725 event pairs, 76 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 1432. Up to 518 conditions per place. [2023-08-26 22:21:14,937 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 88 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-26 22:21:14,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 90 transitions, 1205 flow [2023-08-26 22:21:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:21:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:21:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-26 22:21:14,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-08-26 22:21:14,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-26 22:21:14,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-26 22:21:14,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:21:14,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-26 22:21:14,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-08-26 22:21:14,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:21:14,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:21:14,943 INFO L175 Difference]: Start difference. First operand has 125 places, 76 transitions, 995 flow. Second operand 3 states and 705 transitions. [2023-08-26 22:21:14,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 90 transitions, 1205 flow [2023-08-26 22:21:14,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 90 transitions, 1199 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:21:14,958 INFO L231 Difference]: Finished difference. Result has 123 places, 75 transitions, 991 flow [2023-08-26 22:21:14,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=991, PETRI_PLACES=123, PETRI_TRANSITIONS=75} [2023-08-26 22:21:14,959 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2023-08-26 22:21:14,960 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 75 transitions, 991 flow [2023-08-26 22:21:14,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2023-08-26 22:21:14,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:21:14,960 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:21:14,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 22:21:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 22:21:15,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:21:15,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:21:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -222091465, now seen corresponding path program 1 times [2023-08-26 22:21:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:21:15,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683724339] [2023-08-26 22:21:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:21:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:21:17,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:21:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159434827] [2023-08-26 22:21:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:21:17,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:21:17,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:21:17,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:21:17,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 22:21:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:21:39,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 70705 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 22:21:39,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:21:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-26 22:21:39,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:21:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:21:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683724339] [2023-08-26 22:21:39,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:21:39,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159434827] [2023-08-26 22:21:39,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159434827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:21:39,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:21:39,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:21:39,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280084440] [2023-08-26 22:21:39,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:21:39,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:21:39,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:21:39,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:21:39,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:21:39,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 504 [2023-08-26 22:21:39,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 75 transitions, 991 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2023-08-26 22:21:39,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:21:39,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 504 [2023-08-26 22:21:39,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:21:40,390 INFO L124 PetriNetUnfolderBase]: 369/907 cut-off events. [2023-08-26 22:21:40,390 INFO L125 PetriNetUnfolderBase]: For 6123/6123 co-relation queries the response was YES. [2023-08-26 22:21:40,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 907 events. 369/907 cut-off events. For 6123/6123 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2447 event pairs, 10 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 1746. Up to 536 conditions per place. [2023-08-26 22:21:40,395 INFO L140 encePairwiseOnDemand]: 502/504 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-26 22:21:40,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 89 transitions, 1199 flow [2023-08-26 22:21:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:21:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:21:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2023-08-26 22:21:40,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2023-08-26 22:21:40,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2023-08-26 22:21:40,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2023-08-26 22:21:40,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:21:40,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2023-08-26 22:21:40,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 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) [2023-08-26 22:21:40,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:21:40,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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) [2023-08-26 22:21:40,401 INFO L175 Difference]: Start difference. First operand has 123 places, 75 transitions, 991 flow. Second operand 3 states and 704 transitions. [2023-08-26 22:21:40,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 89 transitions, 1199 flow [2023-08-26 22:21:40,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 89 transitions, 1195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:21:40,416 INFO L231 Difference]: Finished difference. Result has 122 places, 74 transitions, 987 flow [2023-08-26 22:21:40,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=987, PETRI_PLACES=122, PETRI_TRANSITIONS=74} [2023-08-26 22:21:40,417 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2023-08-26 22:21:40,417 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 74 transitions, 987 flow [2023-08-26 22:21:40,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2023-08-26 22:21:40,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:21:40,418 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:21:40,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 22:21:40,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:21:40,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:21:40,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:21:40,645 INFO L85 PathProgramCache]: Analyzing trace with hash -222091453, now seen corresponding path program 3 times [2023-08-26 22:21:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:21:40,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945155864] [2023-08-26 22:21:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:21:40,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:21:43,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:21:43,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976485846] [2023-08-26 22:21:43,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:21:43,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:21:43,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:21:43,591 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:21:43,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-08-26 22:33:28,814 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 [2023-08-26 22:33:28,815 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 22:33:30,015 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-26 22:33:30,025 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-08-26 22:33:30,041 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 137 [2023-08-26 22:33:30,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-26 22:33:30,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-08-26 22:33:30,061 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-26 22:33:30,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 22:33:30,061 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-26 22:33:30,062 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-26 22:33:30,062 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-08-26 22:33:30,063 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 20 remaining) [2023-08-26 22:33:30,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-26 22:33:30,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-26 22:33:30,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-26 22:33:30,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-26 22:33:30,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-26 22:33:30,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-26 22:33:30,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-26 22:33:30,065 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 1, 1, 1, 1] [2023-08-26 22:33:30,069 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:33:30,069 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:33:30,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:33:30 BasicIcfg [2023-08-26 22:33:30,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:33:30,072 INFO L158 Benchmark]: Toolchain (without parser) took 854654.69ms. Allocated memory was 354.4MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 328.9MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-26 22:33:30,072 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory is still 330.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:33:30,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.37ms. Allocated memory is still 354.4MB. Free memory was 328.9MB in the beginning and 299.0MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 22:33:30,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.80ms. Allocated memory is still 354.4MB. Free memory was 298.6MB in the beginning and 296.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 22:33:30,072 INFO L158 Benchmark]: Boogie Preprocessor took 34.77ms. Allocated memory is still 354.4MB. Free memory was 296.0MB in the beginning and 293.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:33:30,073 INFO L158 Benchmark]: RCFGBuilder took 512.31ms. Allocated memory is still 354.4MB. Free memory was 293.9MB in the beginning and 323.5MB in the end (delta: -29.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. [2023-08-26 22:33:30,073 INFO L158 Benchmark]: TraceAbstraction took 853461.89ms. Allocated memory was 354.4MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 322.6MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-26 22:33:30,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory is still 330.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 594.37ms. Allocated memory is still 354.4MB. Free memory was 328.9MB in the beginning and 299.0MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.80ms. Allocated memory is still 354.4MB. Free memory was 298.6MB in the beginning and 296.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.77ms. Allocated memory is still 354.4MB. Free memory was 296.0MB in the beginning and 293.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 512.31ms. Allocated memory is still 354.4MB. Free memory was 293.9MB in the beginning and 323.5MB in the end (delta: -29.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. * TraceAbstraction took 853461.89ms. Allocated memory was 354.4MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 322.6MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 1071]: Unsoundness Warning unspecified type, defaulting to int C: long [1071] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 71.0s, 230 PlacesBefore, 40 PlacesAfterwards, 240 TransitionsBefore, 39 TransitionsAfterwards, 7154 CoEnabledTransitionPairs, 7 FixpointIterations, 127 TrivialSequentialCompositions, 94 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 15 ConcurrentYvCompositions, 11 ChoiceCompositions, 262 TotalNumberOfCompositions, 7085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5935, independent: 5842, independent conditional: 0, independent unconditional: 5842, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3931, independent: 3902, independent conditional: 0, independent unconditional: 3902, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5935, independent: 1940, independent conditional: 0, independent unconditional: 1940, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 3931, unknown conditional: 0, unknown unconditional: 3931] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1069]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1070]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 273 locations, 20 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: 853.3s, OverallIterations: 15, TraceHistogramMax: 300, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 71.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 9.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1536 IncrementalHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 0 mSDtfsCounter, 1536 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1193 GetRequests, 1082 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=995occurred in iteration=12, InterpolantAutomatonStates: 120, 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: 7.9s SsaConstructionTime, 15.6s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 949 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1193 ConstructedInterpolants, 27 QuantifiedInterpolants, 2496 SizeOfPredicates, 5 NumberOfNonLiveVariables, 117294 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 101225/113464 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