/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_22-nocollapse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:16:46,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:16:46,074 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 22:16:46,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:16:46,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:16:46,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:16:46,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:16:46,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:16:46,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:16:46,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:16:46,116 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:16:46,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:16:46,117 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:16:46,117 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:16:46,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:16:46,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:16:46,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:16:46,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:16:46,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:16:46,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:16:46,119 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:16:46,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:16:46,120 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:16:46,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:16:46,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:16:46,121 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:16:46,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:16:46,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:16:46,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:16:46,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:16:46,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:16:46,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:16:46,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:16:46,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:16:46,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:16:46,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:16:46,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:16:46,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:16:46,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:16:46,447 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:16:46,447 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:16:46,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-26 22:16:47,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:16:47,961 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:16:47,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-26 22:16:47,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c53968ca/414ee84416b44071815459e6970a9958/FLAG3b729f9ca [2023-08-26 22:16:48,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c53968ca/414ee84416b44071815459e6970a9958 [2023-08-26 22:16:48,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:16:48,011 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:16:48,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:16:48,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:16:48,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:16:48,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1fff94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48, skipping insertion in model container [2023-08-26 22:16:48,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,078 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:16:48,473 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,473 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,475 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,477 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:16:48,517 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:16:48,544 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 22:16:48,545 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 22:16:48,573 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,573 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,574 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,574 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:16:48,595 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1063] [2023-08-26 22:16:48,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:16:48,652 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:16:48,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48 WrapperNode [2023-08-26 22:16:48,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:16:48,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:16:48,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:16:48,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:16:48,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,696 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 141 [2023-08-26 22:16:48,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:16:48,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:16:48,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:16:48,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:16:48,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:16:48,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:16:48,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:16:48,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:16:48,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (1/1) ... [2023-08-26 22:16:48,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:16:48,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:16:48,756 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 22:16:48,778 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 22:16:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-26 22:16:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-26 22:16:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:16:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 22:16:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:16:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 22:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 22:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:16:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:16:48,810 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 22:16:48,969 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:16:48,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:16:49,326 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:16:49,333 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:16:49,333 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 22:16:49,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:16:49 BoogieIcfgContainer [2023-08-26 22:16:49,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:16:49,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:16:49,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:16:49,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:16:49,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:16:48" (1/3) ... [2023-08-26 22:16:49,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b0d0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:16:49, skipping insertion in model container [2023-08-26 22:16:49,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:16:48" (2/3) ... [2023-08-26 22:16:49,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b0d0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:16:49, skipping insertion in model container [2023-08-26 22:16:49,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:16:49" (3/3) ... [2023-08-26 22:16:49,342 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-08-26 22:16:49,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:16:49,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-26 22:16:49,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:16:49,425 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 22:16:49,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 205 transitions, 420 flow [2023-08-26 22:16:49,513 INFO L124 PetriNetUnfolderBase]: 15/203 cut-off events. [2023-08-26 22:16:49,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:16:49,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 203 events. 15/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 510 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-08-26 22:16:49,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 205 transitions, 420 flow [2023-08-26 22:16:49,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 203 transitions, 412 flow [2023-08-26 22:16:49,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:16:49,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 203 transitions, 412 flow [2023-08-26 22:16:49,537 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 203 transitions, 412 flow [2023-08-26 22:16:49,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 203 transitions, 412 flow [2023-08-26 22:16:49,572 INFO L124 PetriNetUnfolderBase]: 15/203 cut-off events. [2023-08-26 22:16:49,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:16:49,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 203 events. 15/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 510 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-08-26 22:16:49,578 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-26 22:17:28,597 WARN L234 SmtUtils]: Spent 15.82s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:17:34,169 WARN L234 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:17:47,909 WARN L234 SmtUtils]: Spent 13.74s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:17:53,691 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:18:03,374 WARN L234 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:18:08,736 WARN L234 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:18:22,229 WARN L234 SmtUtils]: Spent 13.49s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:18:28,312 WARN L234 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:18:28,316 INFO L134 LiptonReduction]: Checked pairs total: 7284 [2023-08-26 22:18:28,316 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-26 22:18:28,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:18:28,333 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;@46ef5f0b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:18:28,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-26 22:18:28,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:18:28,336 INFO L124 PetriNetUnfolderBase]: 2/6 cut-off events. [2023-08-26 22:18:28,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:18:28,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:28,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:18:28,337 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 22:18:28,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash 690265, now seen corresponding path program 1 times [2023-08-26 22:18:28,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:28,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847609587] [2023-08-26 22:18:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:28,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:28,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58349965] [2023-08-26 22:18:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:28,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:28,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:28,464 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 22:18:28,464 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 22:18:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:18:28,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:18:28,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:28,632 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 22:18:28,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:18:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847609587] [2023-08-26 22:18:28,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58349965] [2023-08-26 22:18:28,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58349965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:18:28,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:18:28,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:18:28,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802638078] [2023-08-26 22:18:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:18:28,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:18:28,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:18:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:18:28,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 418 [2023-08-26 22:18:28,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 22:18:28,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:28,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 418 [2023-08-26 22:18:28,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:29,116 INFO L124 PetriNetUnfolderBase]: 436/710 cut-off events. [2023-08-26 22:18:29,116 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 22:18:29,119 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 61. Compared 2770 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 22:18:29,125 INFO L140 encePairwiseOnDemand]: 409/418 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-26 22:18:29,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-26 22:18:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:18:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:18:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-08-26 22:18:29,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46730462519936206 [2023-08-26 22:18:29,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-08-26 22:18:29,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-08-26 22:18:29,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:29,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-08-26 22:18:29,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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 22:18:29,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:29,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:29,169 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 586 transitions. [2023-08-26 22:18:29,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-26 22:18:29,171 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 22:18:29,173 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-26 22:18:29,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, 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 22:18:29,179 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-26 22:18:29,179 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-26 22:18:29,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 22:18:29,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:29,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:18:29,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:18:29,388 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 22:18:29,389 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 22:18:29,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash 690391, now seen corresponding path program 1 times [2023-08-26 22:18:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395200936] [2023-08-26 22:18:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:29,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683700237] [2023-08-26 22:18:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:29,448 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 22:18:29,464 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 22:18:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:18:29,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:18:29,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:29,602 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 22:18:29,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:18:29,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:29,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395200936] [2023-08-26 22:18:29,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:29,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683700237] [2023-08-26 22:18:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683700237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:18:29,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:18:29,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:18:29,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676775224] [2023-08-26 22:18:29,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:18:29,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:18:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:29,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:18:29,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:18:29,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 418 [2023-08-26 22:18:29,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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 22:18:29,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:29,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 418 [2023-08-26 22:18:29,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:29,775 INFO L124 PetriNetUnfolderBase]: 435/708 cut-off events. [2023-08-26 22:18:29,775 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:18:29,776 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 60. Compared 2730 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 22:18:29,779 INFO L140 encePairwiseOnDemand]: 413/418 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-26 22:18:29,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 176 flow [2023-08-26 22:18:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:18:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:18:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-26 22:18:29,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46570972886762363 [2023-08-26 22:18:29,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-26 22:18:29,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-26 22:18:29,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:29,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-26 22:18:29,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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 22:18:29,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:29,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:29,787 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 584 transitions. [2023-08-26 22:18:29,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 176 flow [2023-08-26 22:18:29,788 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 22:18:29,789 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow [2023-08-26 22:18:29,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, 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 22:18:29,790 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-26 22:18:29,790 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow [2023-08-26 22:18:29,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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 22:18:29,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:29,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-26 22:18:29,801 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 22:18:29,996 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 22:18:29,997 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 22:18:29,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash 663466018, now seen corresponding path program 1 times [2023-08-26 22:18:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581535226] [2023-08-26 22:18:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:30,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357879262] [2023-08-26 22:18:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:30,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:30,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:30,028 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 22:18:30,052 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 22:18:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:18:30,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 22:18:30,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:30,138 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 22:18:30,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:18:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581535226] [2023-08-26 22:18:30,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357879262] [2023-08-26 22:18:30,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357879262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:18:30,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:18:30,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:18:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46469507] [2023-08-26 22:18:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:18:30,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:18:30,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:18:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:18:30,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 418 [2023-08-26 22:18:30,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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 22:18:30,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:30,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 418 [2023-08-26 22:18:30,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:30,375 INFO L124 PetriNetUnfolderBase]: 435/712 cut-off events. [2023-08-26 22:18:30,376 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:18:30,377 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 60. Compared 2755 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 22:18:30,380 INFO L140 encePairwiseOnDemand]: 413/418 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-26 22:18:30,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 198 flow [2023-08-26 22:18:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:18:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:18:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-08-26 22:18:30,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-26 22:18:30,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-08-26 22:18:30,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-08-26 22:18:30,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:30,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-08-26 22:18:30,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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 22:18:30,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:30,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:30,388 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 589 transitions. [2023-08-26 22:18:30,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 198 flow [2023-08-26 22:18:30,389 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 22:18:30,390 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 114 flow [2023-08-26 22:18:30,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, 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 22:18:30,391 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-26 22:18:30,391 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 114 flow [2023-08-26 22:18:30,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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 22:18:30,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:30,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:18:30,398 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 22:18:30,598 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 22:18:30,599 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 22:18:30,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash -906781931, now seen corresponding path program 1 times [2023-08-26 22:18:30,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:30,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718883751] [2023-08-26 22:18:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:30,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:30,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:30,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914918701] [2023-08-26 22:18:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:30,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:30,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:30,633 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 22:18:30,638 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 22:18:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:18:30,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:18:30,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:30,824 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 22:18:30,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:18:30,840 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 22:18:30,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718883751] [2023-08-26 22:18:30,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914918701] [2023-08-26 22:18:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914918701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:18:30,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:18:30,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-26 22:18:30,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651913060] [2023-08-26 22:18:30,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:18:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:18:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:18:30,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:18:30,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 418 [2023-08-26 22:18:30,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 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 22:18:30,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:30,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 418 [2023-08-26 22:18:30,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:31,236 INFO L124 PetriNetUnfolderBase]: 437/724 cut-off events. [2023-08-26 22:18:31,236 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:18:31,237 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 60. Compared 2815 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 22:18:31,264 INFO L140 encePairwiseOnDemand]: 411/418 looper letters, 43 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-08-26 22:18:31,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 258 flow [2023-08-26 22:18:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:18:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:18:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1150 transitions. [2023-08-26 22:18:31,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585326953748006 [2023-08-26 22:18:31,269 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1150 transitions. [2023-08-26 22:18:31,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1150 transitions. [2023-08-26 22:18:31,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:31,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1150 transitions. [2023-08-26 22:18:31,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.66666666666666) internal successors, (1150), 6 states have internal predecessors, (1150), 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 22:18:31,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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 22:18:31,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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 22:18:31,277 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 114 flow. Second operand 6 states and 1150 transitions. [2023-08-26 22:18:31,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 258 flow [2023-08-26 22:18:31,278 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 22:18:31,279 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 188 flow [2023-08-26 22:18:31,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, 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 22:18:31,280 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-08-26 22:18:31,280 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 188 flow [2023-08-26 22:18:31,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 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 22:18:31,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:31,281 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-26 22:18:31,292 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 22:18:31,487 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 22:18:31,487 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 22:18:31,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:31,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2007520482, now seen corresponding path program 2 times [2023-08-26 22:18:31,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:31,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709091159] [2023-08-26 22:18:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:31,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:31,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:31,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860628570] [2023-08-26 22:18:31,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:18:31,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:31,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:31,575 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 22:18:31,576 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 22:18:31,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:18:31,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:18:31,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:18:31,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:31,777 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 22:18:31,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:18:31,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709091159] [2023-08-26 22:18:31,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860628570] [2023-08-26 22:18:31,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860628570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:18:31,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:18:31,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:18:31,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122407322] [2023-08-26 22:18:31,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:18:31,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:18:31,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:31,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:18:31,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:18:31,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 418 [2023-08-26 22:18:31,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 22:18:31,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:31,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 418 [2023-08-26 22:18:31,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:31,954 INFO L124 PetriNetUnfolderBase]: 437/722 cut-off events. [2023-08-26 22:18:31,954 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 22:18:31,955 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 2803 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 22:18:31,958 INFO L140 encePairwiseOnDemand]: 414/418 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-26 22:18:31,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 276 flow [2023-08-26 22:18:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:18:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:18:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-08-26 22:18:31,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46730462519936206 [2023-08-26 22:18:31,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-08-26 22:18:31,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-08-26 22:18:31,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:31,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-08-26 22:18:31,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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 22:18:31,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:31,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:31,965 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 188 flow. Second operand 3 states and 586 transitions. [2023-08-26 22:18:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 276 flow [2023-08-26 22:18:31,967 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 22:18:31,968 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 188 flow [2023-08-26 22:18:31,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, 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 22:18:31,969 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2023-08-26 22:18:31,969 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 188 flow [2023-08-26 22:18:31,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 22:18:31,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:31,970 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-26 22:18:31,979 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 22:18:32,175 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 22:18:32,176 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 22:18:32,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2103597219, now seen corresponding path program 3 times [2023-08-26 22:18:32,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:32,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096505823] [2023-08-26 22:18:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:32,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:32,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4652696] [2023-08-26 22:18:32,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:18:32,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:32,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:32,262 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 22:18:32,265 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 22:18:32,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 22:18:32,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:18:32,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:18:32,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:32,620 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 22:18:32,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:18:32,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:32,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096505823] [2023-08-26 22:18:32,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:32,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4652696] [2023-08-26 22:18:32,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4652696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:18:32,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:18:32,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:18:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319344278] [2023-08-26 22:18:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:18:32,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:18:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:18:32,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:18:32,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 418 [2023-08-26 22:18:32,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 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 22:18:32,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:32,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 418 [2023-08-26 22:18:32,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:33,026 INFO L124 PetriNetUnfolderBase]: 435/712 cut-off events. [2023-08-26 22:18:33,027 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-26 22:18:33,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 712 events. 435/712 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2742 event pairs, 340 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 1442. Up to 698 conditions per place. [2023-08-26 22:18:33,031 INFO L140 encePairwiseOnDemand]: 409/418 looper letters, 38 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-08-26 22:18:33,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 260 flow [2023-08-26 22:18:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:18:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:18:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1079 transitions. [2023-08-26 22:18:33,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302232854864434 [2023-08-26 22:18:33,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1079 transitions. [2023-08-26 22:18:33,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1079 transitions. [2023-08-26 22:18:33,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:33,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1079 transitions. [2023-08-26 22:18:33,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.83333333333334) internal successors, (1079), 6 states have internal predecessors, (1079), 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 22:18:33,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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 22:18:33,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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 22:18:33,043 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 188 flow. Second operand 6 states and 1079 transitions. [2023-08-26 22:18:33,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 260 flow [2023-08-26 22:18:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 232 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-26 22:18:33,045 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 149 flow [2023-08-26 22:18:33,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-26 22:18:33,045 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2023-08-26 22:18:33,046 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 149 flow [2023-08-26 22:18:33,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 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 22:18:33,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:33,046 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:18:33,060 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 22:18:33,255 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 22:18:33,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:18:33,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 376857505, now seen corresponding path program 1 times [2023-08-26 22:18:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861220006] [2023-08-26 22:18:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:33,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:33,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217177219] [2023-08-26 22:18:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:33,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:33,331 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 22:18:33,334 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 22:18:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:18:33,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:18:33,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:18:33,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:18:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:18:33,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:33,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861220006] [2023-08-26 22:18:33,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:33,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217177219] [2023-08-26 22:18:33,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217177219] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:18:33,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:18:33,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-26 22:18:33,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404543889] [2023-08-26 22:18:33,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:18:33,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 22:18:33,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:33,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 22:18:33,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 22:18:33,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 418 [2023-08-26 22:18:33,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 149 flow. Second operand has 12 states, 12 states have (on average 183.58333333333334) internal successors, (2203), 12 states have internal predecessors, (2203), 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 22:18:33,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:33,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 418 [2023-08-26 22:18:33,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:35,063 INFO L124 PetriNetUnfolderBase]: 435/724 cut-off events. [2023-08-26 22:18:35,063 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2023-08-26 22:18:35,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 724 events. 435/724 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2817 event pairs, 340 based on Foata normal form. 12/460 useless extension candidates. Maximal degree in co-relation 1466. Up to 705 conditions per place. [2023-08-26 22:18:35,067 INFO L140 encePairwiseOnDemand]: 415/418 looper letters, 33 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-08-26 22:18:35,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 277 flow [2023-08-26 22:18:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:18:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:18:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2233 transitions. [2023-08-26 22:18:35,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451754385964912 [2023-08-26 22:18:35,073 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2233 transitions. [2023-08-26 22:18:35,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2233 transitions. [2023-08-26 22:18:35,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:35,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2233 transitions. [2023-08-26 22:18:35,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 186.08333333333334) internal successors, (2233), 12 states have internal predecessors, (2233), 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 22:18:35,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 418.0) internal successors, (5434), 13 states have internal predecessors, (5434), 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 22:18:35,086 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 418.0) internal successors, (5434), 13 states have internal predecessors, (5434), 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 22:18:35,087 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 149 flow. Second operand 12 states and 2233 transitions. [2023-08-26 22:18:35,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 277 flow [2023-08-26 22:18:35,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 267 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 22:18:35,089 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 239 flow [2023-08-26 22:18:35,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=239, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-26 22:18:35,090 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2023-08-26 22:18:35,090 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 239 flow [2023-08-26 22:18:35,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.58333333333334) internal successors, (2203), 12 states have internal predecessors, (2203), 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 22:18:35,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:35,091 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:18:35,103 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 22:18:35,299 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 22:18:35,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:18:35,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash -603646271, now seen corresponding path program 2 times [2023-08-26 22:18:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:35,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994718024] [2023-08-26 22:18:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:35,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:35,429 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607051776] [2023-08-26 22:18:35,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:18:35,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:35,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:35,430 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 22:18:35,433 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 22:18:35,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:18:35,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:18:35,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:18:35,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 22:18:35,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:18:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994718024] [2023-08-26 22:18:35,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607051776] [2023-08-26 22:18:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607051776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:18:35,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:18:35,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:18:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312089976] [2023-08-26 22:18:35,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:18:35,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:18:35,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:35,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:18:35,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:18:35,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 418 [2023-08-26 22:18:35,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 22:18:35,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:35,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 418 [2023-08-26 22:18:35,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:36,164 INFO L124 PetriNetUnfolderBase]: 398/663 cut-off events. [2023-08-26 22:18:36,164 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-08-26 22:18:36,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 663 events. 398/663 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2803 event pairs, 76 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 1361. Up to 451 conditions per place. [2023-08-26 22:18:36,168 INFO L140 encePairwiseOnDemand]: 415/418 looper letters, 58 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-26 22:18:36,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 389 flow [2023-08-26 22:18:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:18:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:18:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-26 22:18:36,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2023-08-26 22:18:36,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-26 22:18:36,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-26 22:18:36,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:36,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-26 22:18:36,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 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 22:18:36,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:36,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:18:36,210 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 239 flow. Second operand 3 states and 597 transitions. [2023-08-26 22:18:36,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 389 flow [2023-08-26 22:18:36,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 337 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 22:18:36,213 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 189 flow [2023-08-26 22:18:36,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2023-08-26 22:18:36,216 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2023-08-26 22:18:36,216 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 189 flow [2023-08-26 22:18:36,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 22:18:36,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:36,216 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:18:36,226 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 22:18:36,425 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 22:18:36,425 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:18:36,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:36,426 INFO L85 PathProgramCache]: Analyzing trace with hash -603646260, now seen corresponding path program 1 times [2023-08-26 22:18:36,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:36,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066000357] [2023-08-26 22:18:36,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:36,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:36,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:36,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814710861] [2023-08-26 22:18:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:36,530 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 22:18:36,553 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 22:18:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:18:37,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 22:18:37,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:18:37,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:18:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:18:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066000357] [2023-08-26 22:18:37,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814710861] [2023-08-26 22:18:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814710861] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:18:37,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:18:37,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-26 22:18:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920734284] [2023-08-26 22:18:37,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:18:37,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 22:18:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 22:18:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-26 22:18:37,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 418 [2023-08-26 22:18:37,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 189 flow. Second operand has 24 states, 24 states have (on average 183.29166666666666) internal successors, (4399), 24 states have internal predecessors, (4399), 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 22:18:37,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:37,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 418 [2023-08-26 22:18:37,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:38,672 INFO L124 PetriNetUnfolderBase]: 398/687 cut-off events. [2023-08-26 22:18:38,672 INFO L125 PetriNetUnfolderBase]: For 1503/1503 co-relation queries the response was YES. [2023-08-26 22:18:38,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 687 events. 398/687 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2518 event pairs, 307 based on Foata normal form. 24/519 useless extension candidates. Maximal degree in co-relation 1435. Up to 644 conditions per place. [2023-08-26 22:18:38,676 INFO L140 encePairwiseOnDemand]: 415/418 looper letters, 32 selfloop transitions, 25 changer transitions 0/57 dead transitions. [2023-08-26 22:18:38,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 57 transitions, 375 flow [2023-08-26 22:18:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 22:18:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 22:18:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4434 transitions. [2023-08-26 22:18:38,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44198564593301437 [2023-08-26 22:18:38,687 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4434 transitions. [2023-08-26 22:18:38,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4434 transitions. [2023-08-26 22:18:38,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:38,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4434 transitions. [2023-08-26 22:18:38,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 184.75) internal successors, (4434), 24 states have internal predecessors, (4434), 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 22:18:38,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 418.0) internal successors, (10450), 25 states have internal predecessors, (10450), 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 22:18:38,725 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 418.0) internal successors, (10450), 25 states have internal predecessors, (10450), 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 22:18:38,726 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 189 flow. Second operand 24 states and 4434 transitions. [2023-08-26 22:18:38,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 57 transitions, 375 flow [2023-08-26 22:18:38,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 57 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:18:38,729 INFO L231 Difference]: Finished difference. Result has 93 places, 57 transitions, 381 flow [2023-08-26 22:18:38,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=381, PETRI_PLACES=93, PETRI_TRANSITIONS=57} [2023-08-26 22:18:38,729 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2023-08-26 22:18:38,729 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 57 transitions, 381 flow [2023-08-26 22:18:38,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 183.29166666666666) internal successors, (4399), 24 states have internal predecessors, (4399), 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 22:18:38,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:38,731 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:18:38,748 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 22:18:38,943 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 22:18:38,943 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:18:38,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1513884404, now seen corresponding path program 2 times [2023-08-26 22:18:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572037014] [2023-08-26 22:18:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:39,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580557449] [2023-08-26 22:18:39,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:18:39,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:39,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:39,185 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 22:18:39,208 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 22:18:40,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:18:40,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:18:40,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-26 22:18:40,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:40,994 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 22:18:40,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:18:41,419 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 22:18:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572037014] [2023-08-26 22:18:41,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:41,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580557449] [2023-08-26 22:18:41,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580557449] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:18:41,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:18:41,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-26 22:18:41,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171573844] [2023-08-26 22:18:41,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:18:41,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 22:18:41,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:41,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 22:18:41,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-26 22:18:41,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 418 [2023-08-26 22:18:41,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 57 transitions, 381 flow. Second operand has 32 states, 32 states have (on average 183.25) internal successors, (5864), 32 states have internal predecessors, (5864), 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 22:18:41,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:41,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 418 [2023-08-26 22:18:41,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:43,066 INFO L124 PetriNetUnfolderBase]: 398/703 cut-off events. [2023-08-26 22:18:43,066 INFO L125 PetriNetUnfolderBase]: For 4526/4526 co-relation queries the response was YES. [2023-08-26 22:18:43,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 703 events. 398/703 cut-off events. For 4526/4526 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2518 event pairs, 307 based on Foata normal form. 16/479 useless extension candidates. Maximal degree in co-relation 1473. Up to 644 conditions per place. [2023-08-26 22:18:43,070 INFO L140 encePairwiseOnDemand]: 415/418 looper letters, 32 selfloop transitions, 33 changer transitions 0/65 dead transitions. [2023-08-26 22:18:43,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 65 transitions, 575 flow [2023-08-26 22:18:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 22:18:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 22:18:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5894 transitions. [2023-08-26 22:18:43,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44063995215311 [2023-08-26 22:18:43,083 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5894 transitions. [2023-08-26 22:18:43,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5894 transitions. [2023-08-26 22:18:43,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:43,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5894 transitions. [2023-08-26 22:18:43,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 184.1875) internal successors, (5894), 32 states have internal predecessors, (5894), 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 22:18:43,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 418.0) internal successors, (13794), 33 states have internal predecessors, (13794), 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 22:18:43,112 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 418.0) internal successors, (13794), 33 states have internal predecessors, (13794), 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 22:18:43,113 INFO L175 Difference]: Start difference. First operand has 93 places, 57 transitions, 381 flow. Second operand 32 states and 5894 transitions. [2023-08-26 22:18:43,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 65 transitions, 575 flow [2023-08-26 22:18:43,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 65 transitions, 459 flow, removed 45 selfloop flow, removed 11 redundant places. [2023-08-26 22:18:43,120 INFO L231 Difference]: Finished difference. Result has 121 places, 65 transitions, 445 flow [2023-08-26 22:18:43,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=445, PETRI_PLACES=121, PETRI_TRANSITIONS=65} [2023-08-26 22:18:43,122 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2023-08-26 22:18:43,122 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 65 transitions, 445 flow [2023-08-26 22:18:43,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 183.25) internal successors, (5864), 32 states have internal predecessors, (5864), 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 22:18:43,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:43,124 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:18:43,142 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 22:18:43,341 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 22:18:43,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:18:43,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1134297460, now seen corresponding path program 3 times [2023-08-26 22:18:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:43,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164264673] [2023-08-26 22:18:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:43,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:43,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:43,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203365199] [2023-08-26 22:18:43,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:18:43,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:43,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:43,673 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 22:18:43,691 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 22:18:44,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 22:18:44,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:18:44,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:18:44,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:44,951 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 22:18:44,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:18:44,994 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 22:18:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164264673] [2023-08-26 22:18:44,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203365199] [2023-08-26 22:18:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203365199] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:18:44,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:18:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-26 22:18:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156090738] [2023-08-26 22:18:44,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:18:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:18:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:18:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:18:44,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 418 [2023-08-26 22:18:44,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 65 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 181.5) internal successors, (1089), 6 states have internal predecessors, (1089), 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 22:18:44,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:44,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 418 [2023-08-26 22:18:44,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:45,604 INFO L124 PetriNetUnfolderBase]: 400/770 cut-off events. [2023-08-26 22:18:45,604 INFO L125 PetriNetUnfolderBase]: For 1771/1771 co-relation queries the response was YES. [2023-08-26 22:18:45,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 770 events. 400/770 cut-off events. For 1771/1771 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2412 event pairs, 307 based on Foata normal form. 3/533 useless extension candidates. Maximal degree in co-relation 1465. Up to 638 conditions per place. [2023-08-26 22:18:45,610 INFO L140 encePairwiseOnDemand]: 414/418 looper letters, 156 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2023-08-26 22:18:45,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 162 transitions, 1589 flow [2023-08-26 22:18:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:18:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:18:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1119 transitions. [2023-08-26 22:18:45,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461722488038278 [2023-08-26 22:18:45,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1119 transitions. [2023-08-26 22:18:45,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1119 transitions. [2023-08-26 22:18:45,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:45,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1119 transitions. [2023-08-26 22:18:45,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 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 22:18:45,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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 22:18:45,619 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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 22:18:45,619 INFO L175 Difference]: Start difference. First operand has 121 places, 65 transitions, 445 flow. Second operand 6 states and 1119 transitions. [2023-08-26 22:18:45,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 162 transitions, 1589 flow [2023-08-26 22:18:45,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 162 transitions, 1203 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-08-26 22:18:45,634 INFO L231 Difference]: Finished difference. Result has 107 places, 68 transitions, 514 flow [2023-08-26 22:18:45,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=107, PETRI_TRANSITIONS=68} [2023-08-26 22:18:45,635 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 67 predicate places. [2023-08-26 22:18:45,635 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 68 transitions, 514 flow [2023-08-26 22:18:45,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.5) internal successors, (1089), 6 states have internal predecessors, (1089), 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 22:18:45,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:45,635 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:18:45,647 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 22:18:45,845 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 22:18:45,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:18:45,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash -62875866, now seen corresponding path program 1 times [2023-08-26 22:18:45,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:45,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242352158] [2023-08-26 22:18:45,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:45,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:46,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:46,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39178672] [2023-08-26 22:18:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:46,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:46,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:46,861 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 22:18:46,868 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 22:18:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:18:53,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 28361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:18:53,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:18:54,073 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 22:18:54,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:18:54,267 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 22:18:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:18:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242352158] [2023-08-26 22:18:54,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:18:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39178672] [2023-08-26 22:18:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39178672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:18:54,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:18:54,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-26 22:18:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292930059] [2023-08-26 22:18:54,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:18:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 22:18:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:18:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 22:18:54,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 22:18:54,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 418 [2023-08-26 22:18:54,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 68 transitions, 514 flow. Second operand has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 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 22:18:54,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:18:54,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 418 [2023-08-26 22:18:54,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:18:55,306 INFO L124 PetriNetUnfolderBase]: 406/968 cut-off events. [2023-08-26 22:18:55,307 INFO L125 PetriNetUnfolderBase]: For 5647/5647 co-relation queries the response was YES. [2023-08-26 22:18:55,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 968 events. 406/968 cut-off events. For 5647/5647 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2421 event pairs, 307 based on Foata normal form. 6/734 useless extension candidates. Maximal degree in co-relation 1424. Up to 638 conditions per place. [2023-08-26 22:18:55,313 INFO L140 encePairwiseOnDemand]: 414/418 looper letters, 348 selfloop transitions, 12 changer transitions 0/360 dead transitions. [2023-08-26 22:18:55,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 360 transitions, 2893 flow [2023-08-26 22:18:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:18:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:18:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2214 transitions. [2023-08-26 22:18:55,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44138755980861244 [2023-08-26 22:18:55,317 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2214 transitions. [2023-08-26 22:18:55,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2214 transitions. [2023-08-26 22:18:55,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:18:55,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2214 transitions. [2023-08-26 22:18:55,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.5) internal successors, (2214), 12 states have internal predecessors, (2214), 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 22:18:55,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 418.0) internal successors, (5434), 13 states have internal predecessors, (5434), 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 22:18:55,327 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 418.0) internal successors, (5434), 13 states have internal predecessors, (5434), 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 22:18:55,327 INFO L175 Difference]: Start difference. First operand has 107 places, 68 transitions, 514 flow. Second operand 12 states and 2214 transitions. [2023-08-26 22:18:55,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 360 transitions, 2893 flow [2023-08-26 22:18:55,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 360 transitions, 2891 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:18:55,339 INFO L231 Difference]: Finished difference. Result has 124 places, 75 transitions, 993 flow [2023-08-26 22:18:55,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=993, PETRI_PLACES=124, PETRI_TRANSITIONS=75} [2023-08-26 22:18:55,339 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2023-08-26 22:18:55,339 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 75 transitions, 993 flow [2023-08-26 22:18:55,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 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 22:18:55,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:18:55,340 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:18:55,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 22:18:55,569 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 22:18:55,569 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:18:55,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:18:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash -264061796, now seen corresponding path program 2 times [2023-08-26 22:18:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:18:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358223222] [2023-08-26 22:18:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:18:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:18:58,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:18:58,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516587093] [2023-08-26 22:18:58,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:18:58,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:18:58,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:18:58,281 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 22:18:58,285 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 22:19:06,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:19:06,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:19:06,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 22:19:06,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:19:06,769 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 22:19:06,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:19:06,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:19:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358223222] [2023-08-26 22:19:06,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:19:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516587093] [2023-08-26 22:19:06,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516587093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:19:06,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:19:06,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:19:06,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218008854] [2023-08-26 22:19:06,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:19:06,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:19:06,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:19:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:19:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:19:06,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 418 [2023-08-26 22:19:06,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 75 transitions, 993 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 22:19:06,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:19:06,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 418 [2023-08-26 22:19:06,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:19:07,420 INFO L124 PetriNetUnfolderBase]: 369/907 cut-off events. [2023-08-26 22:19:07,420 INFO L125 PetriNetUnfolderBase]: For 6224/6224 co-relation queries the response was YES. [2023-08-26 22:19:07,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 907 events. 369/907 cut-off events. For 6224/6224 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2538 event pairs, 10 based on Foata normal form. 0/703 useless extension candidates. Maximal degree in co-relation 1308. Up to 536 conditions per place. [2023-08-26 22:19:07,425 INFO L140 encePairwiseOnDemand]: 416/418 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-26 22:19:07,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 89 transitions, 1201 flow [2023-08-26 22:19:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:19:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:19:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2023-08-26 22:19:07,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527910685805425 [2023-08-26 22:19:07,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2023-08-26 22:19:07,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2023-08-26 22:19:07,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:19:07,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2023-08-26 22:19:07,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 22:19:07,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:19:07,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 22:19:07,429 INFO L175 Difference]: Start difference. First operand has 124 places, 75 transitions, 993 flow. Second operand 3 states and 596 transitions. [2023-08-26 22:19:07,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 89 transitions, 1201 flow [2023-08-26 22:19:07,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 89 transitions, 1195 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:19:07,442 INFO L231 Difference]: Finished difference. Result has 122 places, 74 transitions, 987 flow [2023-08-26 22:19:07,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, 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 22:19:07,443 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2023-08-26 22:19:07,443 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 74 transitions, 987 flow [2023-08-26 22:19:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 22:19:07,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:19:07,443 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:19:07,472 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 22:19:07,657 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 22:19:07,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-26 22:19:07,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:19:07,657 INFO L85 PathProgramCache]: Analyzing trace with hash -264061762, now seen corresponding path program 1 times [2023-08-26 22:19:07,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:19:07,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565507124] [2023-08-26 22:19:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:19:07,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:19:10,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:19:10,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026049290] [2023-08-26 22:19:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:19:10,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:19:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:19:10,417 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 22:19:10,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Received shutdown request... [2023-08-26 22:31:10,491 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 22:31:10,491 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 22:31:11,692 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 22:31:11,698 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process [2023-08-26 22:31:11,719 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 22:31:11,899 FATAL L548 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Could not destroy process within 200 ms, abandoning it [2023-08-26 22:31:11,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-26 22:31:11,916 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-26 22:31:11,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:31:11,916 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 22:31:11,917 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-26 22:31:11,917 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-26 22:31:11,917 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-26 22:31:11,917 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-26 22:31:11,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-26 22:31:11,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-26 22:31:11,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-26 22:31:11,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-26 22:31:11,919 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:31:11,922 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:31:11,923 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:31:11,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:31:11 BasicIcfg [2023-08-26 22:31:11,925 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:31:11,925 INFO L158 Benchmark]: Toolchain (without parser) took 863914.47ms. Allocated memory was 371.2MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 345.8MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 898.4MB. Max. memory is 16.0GB. [2023-08-26 22:31:11,925 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:31:11,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.23ms. Allocated memory is still 371.2MB. Free memory was 345.8MB in the beginning and 315.7MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 22:31:11,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.98ms. Allocated memory is still 371.2MB. Free memory was 315.7MB in the beginning and 313.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 22:31:11,926 INFO L158 Benchmark]: Boogie Preprocessor took 29.91ms. Allocated memory is still 371.2MB. Free memory was 313.1MB in the beginning and 311.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:31:11,926 INFO L158 Benchmark]: RCFGBuilder took 608.22ms. Allocated memory is still 371.2MB. Free memory was 311.0MB in the beginning and 344.0MB in the end (delta: -33.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 22:31:11,927 INFO L158 Benchmark]: TraceAbstraction took 862587.83ms. Allocated memory was 371.2MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 344.0MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 896.3MB. Max. memory is 16.0GB. [2023-08-26 22:31:11,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 639.23ms. Allocated memory is still 371.2MB. Free memory was 345.8MB in the beginning and 315.7MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.98ms. Allocated memory is still 371.2MB. Free memory was 315.7MB in the beginning and 313.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.91ms. Allocated memory is still 371.2MB. Free memory was 313.1MB in the beginning and 311.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 608.22ms. Allocated memory is still 371.2MB. Free memory was 311.0MB in the beginning and 344.0MB in the end (delta: -33.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 862587.83ms. Allocated memory was 371.2MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 344.0MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 896.3MB. 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: 1063]: Unsoundness Warning unspecified type, defaulting to int C: long [1063] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 98.8s, 195 PlacesBefore, 40 PlacesAfterwards, 203 TransitionsBefore, 39 TransitionsAfterwards, 7154 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 94 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 15 ConcurrentYvCompositions, 9 ChoiceCompositions, 213 TotalNumberOfCompositions, 7284 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5918, independent: 5822, independent conditional: 0, independent unconditional: 5822, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3898, independent: 3869, independent conditional: 0, independent unconditional: 3869, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5918, independent: 1953, independent conditional: 0, independent unconditional: 1953, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 3898, unknown conditional: 0, unknown unconditional: 3898] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1040]: 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: 1040]: 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: 1045]: 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: 1045]: 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: 1057]: 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: 1057]: 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: 1054]: 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: 1054]: 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: 1057]: 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: 1057]: 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: 1061]: 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: 1062]: 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, 238 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: 862.5s, OverallIterations: 14, TraceHistogramMax: 300, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 98.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1376 IncrementalHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 0 mSDtfsCounter, 1376 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 737 SyntacticMatches, 16 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=993occurred in iteration=12, InterpolantAutomatonStates: 116, 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: 5.0s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 619 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 843 ConstructedInterpolants, 0 QuantifiedInterpolants, 1707 SizeOfPredicates, 2 NumberOfNonLiveVariables, 39009 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 52708/64900 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