/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:09:47,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:09:47,993 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 [2023-08-27 11:09:47,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:09:47,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:09:48,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:09:48,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:09:48,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:09:48,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:09:48,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:09:48,035 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:09:48,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:09:48,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:09:48,037 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:09:48,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:09:48,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:09:48,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:09:48,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:09:48,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:09:48,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:09:48,039 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:09:48,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:09:48,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:09:48,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:09:48,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:09:48,041 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:09:48,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:09:48,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:09:48,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:09:48,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:09:48,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:09:48,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:09:48,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:09:48,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:09:48,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:09:48,043 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:09:48,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:09:48,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:09:48,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:09:48,370 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:09:48,372 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:09:48,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-27 11:09:49,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:09:49,844 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:09:49,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-27 11:09:49,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2986ec923/0f5d11f7ab0c4521bfbe01de300575a7/FLAG5268d8f35 [2023-08-27 11:09:49,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2986ec923/0f5d11f7ab0c4521bfbe01de300575a7 [2023-08-27 11:09:49,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:09:49,884 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:09:49,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:09:49,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:09:49,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:09:49,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:09:49" (1/1) ... [2023-08-27 11:09:49,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50011dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:49, skipping insertion in model container [2023-08-27 11:09:49,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:09:49" (1/1) ... [2023-08-27 11:09:49,945 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:09:50,317 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,317 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,319 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,321 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:09:50,370 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:09:50,398 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-27 11:09:50,400 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-27 11:09:50,431 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,431 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,432 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,432 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 11:09:50,445 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1071] [2023-08-27 11:09:50,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:09:50,515 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:09:50,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50 WrapperNode [2023-08-27 11:09:50,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:09:50,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:09:50,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:09:50,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:09:50,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,594 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 172 [2023-08-27 11:09:50,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:09:50,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:09:50,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:09:50,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:09:50,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:09:50,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:09:50,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:09:50,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:09:50,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (1/1) ... [2023-08-27 11:09:50,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:09:50,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:09:50,693 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) [2023-08-27 11:09:50,700 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 [2023-08-27 11:09:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-27 11:09:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-27 11:09:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:09:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 11:09:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:09:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:09:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:09:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:09:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 11:09:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:09:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 11:09:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:09:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:09:50,729 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:09:50,853 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:09:50,855 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:09:51,190 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:09:51,198 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:09:51,198 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 11:09:51,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:09:51 BoogieIcfgContainer [2023-08-27 11:09:51,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:09:51,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:09:51,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:09:51,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:09:51,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:09:49" (1/3) ... [2023-08-27 11:09:51,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1615d00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:09:51, skipping insertion in model container [2023-08-27 11:09:51,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:09:50" (2/3) ... [2023-08-27 11:09:51,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1615d00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:09:51, skipping insertion in model container [2023-08-27 11:09:51,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:09:51" (3/3) ... [2023-08-27 11:09:51,210 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-08-27 11:09:51,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:09:51,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 11:09:51,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:09:51,327 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:09:51,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 242 transitions, 494 flow [2023-08-27 11:09:51,478 INFO L124 PetriNetUnfolderBase]: 17/240 cut-off events. [2023-08-27 11:09:51,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:09:51,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 240 events. 17/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 542 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-27 11:09:51,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 242 transitions, 494 flow [2023-08-27 11:09:51,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 240 transitions, 486 flow [2023-08-27 11:09:51,499 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:09:51,509 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 240 transitions, 486 flow [2023-08-27 11:09:51,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 240 transitions, 486 flow [2023-08-27 11:09:51,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 486 flow [2023-08-27 11:09:51,563 INFO L124 PetriNetUnfolderBase]: 17/240 cut-off events. [2023-08-27 11:09:51,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:09:51,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 240 events. 17/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 543 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-27 11:09:51,571 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-27 11:10:12,587 WARN L234 SmtUtils]: Spent 9.23s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 11:10:25,355 WARN L234 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 11:10:30,386 WARN L234 SmtUtils]: Spent 5.03s 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) [2023-08-27 11:10:42,305 WARN L234 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 11:10:57,959 WARN L234 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 11:11:04,620 WARN L234 SmtUtils]: Spent 6.66s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 11:11:04,628 INFO L134 LiptonReduction]: Checked pairs total: 7085 [2023-08-27 11:11:04,628 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-08-27 11:11:04,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:11:04,655 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;@161e4681, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:11:04,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-27 11:11:04,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:11:04,662 INFO L124 PetriNetUnfolderBase]: 2/6 cut-off events. [2023-08-27 11:11:04,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:11:04,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:04,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 11:11:04,664 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)] === [2023-08-27 11:11:04,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash 817299, now seen corresponding path program 1 times [2023-08-27 11:11:04,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:04,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062455596] [2023-08-27 11:11:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:04,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:04,806 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603679539] [2023-08-27 11:11:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:04,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:04,813 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) [2023-08-27 11:11:04,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 11:11:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:11:04,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:11:04,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:11:04,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:11:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062455596] [2023-08-27 11:11:04,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603679539] [2023-08-27 11:11:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603679539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:11:04,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:11:04,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:11:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847811748] [2023-08-27 11:11:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:11:04,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:11:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:11:04,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:11:04,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 11:11:04,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:04,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:04,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 11:11:04,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:05,295 INFO L124 PetriNetUnfolderBase]: 436/710 cut-off events. [2023-08-27 11:11:05,296 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-27 11:11:05,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2776 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-08-27 11:11:05,304 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-27 11:11:05,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-27 11:11:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:11:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:11:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-27 11:11:05,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458994708994709 [2023-08-27 11:11:05,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-27 11:11:05,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-27 11:11:05,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:05,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-27 11:11:05,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:05,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:05,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:05,345 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 694 transitions. [2023-08-27 11:11:05,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-27 11:11:05,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:11:05,350 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-27 11:11:05,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-27 11:11:05,355 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-27 11:11:05,358 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-27 11:11:05,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:05,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:05,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 11:11:05,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:05,565 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 [2023-08-27 11:11:05,565 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)] === [2023-08-27 11:11:05,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash 817494, now seen corresponding path program 1 times [2023-08-27 11:11:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368706520] [2023-08-27 11:11:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:05,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:05,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692242670] [2023-08-27 11:11:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:05,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:05,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:05,627 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) [2023-08-27 11:11:05,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 11:11:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:11:05,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:11:05,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:11:05,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:11:05,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368706520] [2023-08-27 11:11:05,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692242670] [2023-08-27 11:11:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692242670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:11:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:11:05,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:11:05,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336382089] [2023-08-27 11:11:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:11:05,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:11:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:11:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:11:05,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 11:11:05,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:05,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:05,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 11:11:05,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:06,025 INFO L124 PetriNetUnfolderBase]: 435/708 cut-off events. [2023-08-27 11:11:06,026 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:11:06,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2746 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 703 conditions per place. [2023-08-27 11:11:06,031 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-27 11:11:06,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 176 flow [2023-08-27 11:11:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:11:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:11:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-08-27 11:11:06,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2023-08-27 11:11:06,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-08-27 11:11:06,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-08-27 11:11:06,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:06,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-08-27 11:11:06,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,040 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 692 transitions. [2023-08-27 11:11:06,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 176 flow [2023-08-27 11:11:06,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:11:06,043 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow [2023-08-27 11:11:06,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-27 11:11:06,044 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-27 11:11:06,044 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow [2023-08-27 11:11:06,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:06,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-27 11:11:06,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:06,254 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 [2023-08-27 11:11:06,254 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)] === [2023-08-27 11:11:06,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 785618910, now seen corresponding path program 1 times [2023-08-27 11:11:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:06,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338418000] [2023-08-27 11:11:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:06,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:06,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899729895] [2023-08-27 11:11:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:06,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:06,293 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) [2023-08-27 11:11:06,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 11:11:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:11:06,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-27 11:11:06,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:11:06,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:11:06,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338418000] [2023-08-27 11:11:06,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899729895] [2023-08-27 11:11:06,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899729895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:11:06,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:11:06,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:11:06,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596041360] [2023-08-27 11:11:06,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:11:06,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:11:06,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:06,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:11:06,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:11:06,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 11:11:06,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:06,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 11:11:06,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:06,675 INFO L124 PetriNetUnfolderBase]: 435/712 cut-off events. [2023-08-27 11:11:06,675 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:11:06,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 712 events. 435/712 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2764 event pairs, 340 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1419. Up to 709 conditions per place. [2023-08-27 11:11:06,679 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-27 11:11:06,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 198 flow [2023-08-27 11:11:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:11:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:11:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-27 11:11:06,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460978835978836 [2023-08-27 11:11:06,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-27 11:11:06,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-27 11:11:06,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:06,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-27 11:11:06,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,688 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 697 transitions. [2023-08-27 11:11:06,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 198 flow [2023-08-27 11:11:06,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:11:06,689 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 114 flow [2023-08-27 11:11:06,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-27 11:11:06,690 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-27 11:11:06,690 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 114 flow [2023-08-27 11:11:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:06,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:11:06,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:06,897 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 [2023-08-27 11:11:06,897 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)] === [2023-08-27 11:11:06,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1414916052, now seen corresponding path program 1 times [2023-08-27 11:11:06,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:06,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49401003] [2023-08-27 11:11:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:06,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:06,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:06,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621135885] [2023-08-27 11:11:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:06,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:06,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:06,927 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) [2023-08-27 11:11:06,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 11:11:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:11:07,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:11:07,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:11:07,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:11:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:11:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49401003] [2023-08-27 11:11:07,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621135885] [2023-08-27 11:11:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621135885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:11:07,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 11:11:07,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-27 11:11:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044851651] [2023-08-27 11:11:07,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 11:11:07,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:11:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:11:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:11:07,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 11:11:07,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:07,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:07,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 11:11:07,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:07,547 INFO L124 PetriNetUnfolderBase]: 437/724 cut-off events. [2023-08-27 11:11:07,547 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:11:07,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 724 events. 437/724 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2823 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1435. Up to 707 conditions per place. [2023-08-27 11:11:07,551 INFO L140 encePairwiseOnDemand]: 497/504 looper letters, 43 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-08-27 11:11:07,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 258 flow [2023-08-27 11:11:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:11:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:11:07,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1366 transitions. [2023-08-27 11:11:07,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45171957671957674 [2023-08-27 11:11:07,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1366 transitions. [2023-08-27 11:11:07,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1366 transitions. [2023-08-27 11:11:07,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:07,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1366 transitions. [2023-08-27 11:11:07,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.66666666666666) internal successors, (1366), 6 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:07,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:07,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:07,565 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 114 flow. Second operand 6 states and 1366 transitions. [2023-08-27 11:11:07,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 258 flow [2023-08-27 11:11:07,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:11:07,567 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 188 flow [2023-08-27 11:11:07,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-27 11:11:07,568 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-08-27 11:11:07,568 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 188 flow [2023-08-27 11:11:07,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:07,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:07,569 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-27 11:11:07,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:07,776 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 [2023-08-27 11:11:07,776 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)] === [2023-08-27 11:11:07,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash -258458786, now seen corresponding path program 2 times [2023-08-27 11:11:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136983532] [2023-08-27 11:11:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:07,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:07,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727182680] [2023-08-27 11:11:07,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:11:07,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:07,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:07,851 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) [2023-08-27 11:11:07,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 11:11:08,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:11:08,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:11:08,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:11:08,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 11:11:08,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:11:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136983532] [2023-08-27 11:11:08,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727182680] [2023-08-27 11:11:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727182680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:11:08,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:11:08,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:11:08,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496734190] [2023-08-27 11:11:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:11:08,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:11:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:11:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:11:08,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 11:11:08,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:08,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:08,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 11:11:08,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:08,407 INFO L124 PetriNetUnfolderBase]: 437/722 cut-off events. [2023-08-27 11:11:08,408 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:11:08,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 722 events. 437/722 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2804 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1449. Up to 721 conditions per place. [2023-08-27 11:11:08,412 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-27 11:11:08,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 276 flow [2023-08-27 11:11:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:11:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:11:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-27 11:11:08,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458994708994709 [2023-08-27 11:11:08,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-27 11:11:08,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-27 11:11:08,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:08,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-27 11:11:08,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:08,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:08,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:08,420 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 188 flow. Second operand 3 states and 694 transitions. [2023-08-27 11:11:08,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 276 flow [2023-08-27 11:11:08,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 266 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 11:11:08,422 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 188 flow [2023-08-27 11:11:08,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-27 11:11:08,423 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2023-08-27 11:11:08,423 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 188 flow [2023-08-27 11:11:08,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:08,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:08,424 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-27 11:11:08,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:08,633 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 [2023-08-27 11:11:08,633 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)] === [2023-08-27 11:11:08,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:08,634 INFO L85 PathProgramCache]: Analyzing trace with hash 577719030, now seen corresponding path program 3 times [2023-08-27 11:11:08,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:08,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549590116] [2023-08-27 11:11:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:08,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:08,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:08,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014512864] [2023-08-27 11:11:08,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 11:11:08,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:08,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:08,703 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) [2023-08-27 11:11:08,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 11:11:09,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 11:11:09,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:11:09,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:11:09,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 11:11:09,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:11:09,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:09,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549590116] [2023-08-27 11:11:09,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:09,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014512864] [2023-08-27 11:11:09,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014512864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:11:09,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:11:09,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:11:09,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936559778] [2023-08-27 11:11:09,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:11:09,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:11:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:11:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:11:09,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 504 [2023-08-27 11:11:09,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:09,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:09,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 504 [2023-08-27 11:11:09,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:09,409 INFO L124 PetriNetUnfolderBase]: 436/717 cut-off events. [2023-08-27 11:11:09,409 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-27 11:11:09,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 717 events. 436/717 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2775 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1443. Up to 698 conditions per place. [2023-08-27 11:11:09,413 INFO L140 encePairwiseOnDemand]: 496/504 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-27 11:11:09,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 294 flow [2023-08-27 11:11:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:11:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:11:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1295 transitions. [2023-08-27 11:11:09,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824074074074076 [2023-08-27 11:11:09,417 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1295 transitions. [2023-08-27 11:11:09,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1295 transitions. [2023-08-27 11:11:09,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:09,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1295 transitions. [2023-08-27 11:11:09,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.83333333333334) internal successors, (1295), 6 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:09,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:09,425 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:09,425 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 188 flow. Second operand 6 states and 1295 transitions. [2023-08-27 11:11:09,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 294 flow [2023-08-27 11:11:09,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:11:09,428 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 193 flow [2023-08-27 11:11:09,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-27 11:11:09,429 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-27 11:11:09,429 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 193 flow [2023-08-27 11:11:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:09,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:09,429 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-27 11:11:09,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:09,636 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 [2023-08-27 11:11:09,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:09,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash 577719143, now seen corresponding path program 1 times [2023-08-27 11:11:09,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:09,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166666116] [2023-08-27 11:11:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:09,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:09,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819473503] [2023-08-27 11:11:09,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:09,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:09,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:09,700 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) [2023-08-27 11:11:09,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 11:11:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:11:10,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:11:10,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:11:10,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:11:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:11:10,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:10,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166666116] [2023-08-27 11:11:10,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:10,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819473503] [2023-08-27 11:11:10,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819473503] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:11:10,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 11:11:10,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-27 11:11:10,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220042223] [2023-08-27 11:11:10,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 11:11:10,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:11:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:11:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:11:10,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 11:11:10,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 193 flow. Second operand has 12 states, 12 states have (on average 219.33333333333334) internal successors, (2632), 12 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:10,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:10,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 11:11:10,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:11,316 INFO L124 PetriNetUnfolderBase]: 436/735 cut-off events. [2023-08-27 11:11:11,317 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-08-27 11:11:11,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 735 events. 436/735 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2944 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1469. Up to 706 conditions per place. [2023-08-27 11:11:11,321 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-08-27 11:11:11,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 407 flow [2023-08-27 11:11:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:11:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:11:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2682 transitions. [2023-08-27 11:11:11,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2023-08-27 11:11:11,328 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2682 transitions. [2023-08-27 11:11:11,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2682 transitions. [2023-08-27 11:11:11,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:11,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2682 transitions. [2023-08-27 11:11:11,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 223.5) internal successors, (2682), 12 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:11,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:11,343 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:11,343 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 193 flow. Second operand 12 states and 2682 transitions. [2023-08-27 11:11:11,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 407 flow [2023-08-27 11:11:11,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 401 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 11:11:11,347 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 316 flow [2023-08-27 11:11:11,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-27 11:11:11,347 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-08-27 11:11:11,347 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 316 flow [2023-08-27 11:11:11,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 219.33333333333334) internal successors, (2632), 12 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:11,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:11,349 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-27 11:11:11,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:11,557 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 [2023-08-27 11:11:11,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:11,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:11,558 INFO L85 PathProgramCache]: Analyzing trace with hash 918799911, now seen corresponding path program 2 times [2023-08-27 11:11:11,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:11,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053995333] [2023-08-27 11:11:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:11,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:11,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419192562] [2023-08-27 11:11:11,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:11:11,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:11,682 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) [2023-08-27 11:11:11,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 11:11:12,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:11:12,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:11:12,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 11:11:12,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:11:12,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:11:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:11:12,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:12,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053995333] [2023-08-27 11:11:12,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:12,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419192562] [2023-08-27 11:11:12,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419192562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:11:12,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 11:11:12,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-27 11:11:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008375467] [2023-08-27 11:11:12,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 11:11:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 11:11:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 11:11:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-27 11:11:12,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 11:11:12,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 316 flow. Second operand has 24 states, 24 states have (on average 219.16666666666666) internal successors, (5260), 24 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:12,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:12,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 11:11:12,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:14,919 INFO L124 PetriNetUnfolderBase]: 436/771 cut-off events. [2023-08-27 11:11:14,920 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2023-08-27 11:11:14,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 771 events. 436/771 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3024 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1550. Up to 706 conditions per place. [2023-08-27 11:11:14,924 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-08-27 11:11:14,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 784 flow [2023-08-27 11:11:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 11:11:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 11:11:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5334 transitions. [2023-08-27 11:11:14,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2023-08-27 11:11:14,937 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5334 transitions. [2023-08-27 11:11:14,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5334 transitions. [2023-08-27 11:11:14,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:14,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5334 transitions. [2023-08-27 11:11:14,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 222.25) internal successors, (5334), 24 states have internal predecessors, (5334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:14,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 504.0) internal successors, (12600), 25 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:14,969 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 504.0) internal successors, (12600), 25 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:14,970 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 316 flow. Second operand 24 states and 5334 transitions. [2023-08-27 11:11:14,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 784 flow [2023-08-27 11:11:14,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 716 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-27 11:11:14,975 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 529 flow [2023-08-27 11:11:14,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=529, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-08-27 11:11:14,976 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2023-08-27 11:11:14,976 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 529 flow [2023-08-27 11:11:14,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 219.16666666666666) internal successors, (5260), 24 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:14,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:14,978 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-27 11:11:14,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:15,189 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 [2023-08-27 11:11:15,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:15,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1431073881, now seen corresponding path program 3 times [2023-08-27 11:11:15,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:15,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470330080] [2023-08-27 11:11:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:15,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:15,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:15,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392539867] [2023-08-27 11:11:15,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 11:11:15,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:15,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:15,414 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) [2023-08-27 11:11:15,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 11:11:16,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 11:11:16,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:11:16,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 11:11:16,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-27 11:11:16,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:11:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-27 11:11:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:18,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470330080] [2023-08-27 11:11:18,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:18,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392539867] [2023-08-27 11:11:18,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392539867] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 11:11:18,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:11:18,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-27 11:11:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275208099] [2023-08-27 11:11:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:11:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:11:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:11:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:11:18,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 11:11:18,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:18,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:18,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 11:11:18,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:20,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 11:11:21,114 INFO L124 PetriNetUnfolderBase]: 435/748 cut-off events. [2023-08-27 11:11:21,114 INFO L125 PetriNetUnfolderBase]: For 662/662 co-relation queries the response was YES. [2023-08-27 11:11:21,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 748 events. 435/748 cut-off events. For 662/662 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2889 event pairs, 340 based on Foata normal form. 22/494 useless extension candidates. Maximal degree in co-relation 1574. Up to 698 conditions per place. [2023-08-27 11:11:21,120 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 53 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-27 11:11:21,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 58 transitions, 549 flow [2023-08-27 11:11:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:11:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:11:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 896 transitions. [2023-08-27 11:11:21,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-27 11:11:21,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 896 transitions. [2023-08-27 11:11:21,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 896 transitions. [2023-08-27 11:11:21,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:21,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 896 transitions. [2023-08-27 11:11:21,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:21,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:21,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:21,128 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 529 flow. Second operand 4 states and 896 transitions. [2023-08-27 11:11:21,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 58 transitions, 549 flow [2023-08-27 11:11:21,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 58 transitions, 399 flow, removed 53 selfloop flow, removed 17 redundant places. [2023-08-27 11:11:21,135 INFO L231 Difference]: Finished difference. Result has 86 places, 58 transitions, 293 flow [2023-08-27 11:11:21,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2023-08-27 11:11:21,136 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2023-08-27 11:11:21,136 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 293 flow [2023-08-27 11:11:21,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:21,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:21,137 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:11:21,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:21,345 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 [2023-08-27 11:11:21,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:21,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:21,347 INFO L85 PathProgramCache]: Analyzing trace with hash -512968736, now seen corresponding path program 1 times [2023-08-27 11:11:21,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:21,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534956399] [2023-08-27 11:11:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:21,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:21,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636636806] [2023-08-27 11:11:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:21,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:21,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:21,630 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) [2023-08-27 11:11:21,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 11:11:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:11:23,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 11:11:23,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:11:23,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:11:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:11:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534956399] [2023-08-27 11:11:24,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:24,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636636806] [2023-08-27 11:11:24,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636636806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:11:24,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 11:11:24,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-27 11:11:24,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251844368] [2023-08-27 11:11:24,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 11:11:24,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 11:11:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 11:11:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-27 11:11:24,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 11:11:24,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 293 flow. Second operand has 32 states, 32 states have (on average 219.25) internal successors, (7016), 32 states have internal predecessors, (7016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:24,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:24,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 11:11:24,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:25,931 INFO L124 PetriNetUnfolderBase]: 435/764 cut-off events. [2023-08-27 11:11:25,931 INFO L125 PetriNetUnfolderBase]: For 5023/5023 co-relation queries the response was YES. [2023-08-27 11:11:25,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 764 events. 435/764 cut-off events. For 5023/5023 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2889 event pairs, 340 based on Foata normal form. 16/504 useless extension candidates. Maximal degree in co-relation 1545. Up to 705 conditions per place. [2023-08-27 11:11:25,936 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 33 selfloop transitions, 33 changer transitions 0/66 dead transitions. [2023-08-27 11:11:25,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 66 transitions, 473 flow [2023-08-27 11:11:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 11:11:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 11:11:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7047 transitions. [2023-08-27 11:11:25,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369419642857143 [2023-08-27 11:11:25,949 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7047 transitions. [2023-08-27 11:11:25,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7047 transitions. [2023-08-27 11:11:25,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:25,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7047 transitions. [2023-08-27 11:11:25,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 220.21875) internal successors, (7047), 32 states have internal predecessors, (7047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:25,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 504.0) internal successors, (16632), 33 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:25,983 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 504.0) internal successors, (16632), 33 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:25,983 INFO L175 Difference]: Start difference. First operand has 86 places, 58 transitions, 293 flow. Second operand 32 states and 7047 transitions. [2023-08-27 11:11:25,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 66 transitions, 473 flow [2023-08-27 11:11:25,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 66 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:11:25,987 INFO L231 Difference]: Finished difference. Result has 122 places, 66 transitions, 447 flow [2023-08-27 11:11:25,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=447, PETRI_PLACES=122, PETRI_TRANSITIONS=66} [2023-08-27 11:11:25,988 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2023-08-27 11:11:25,988 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 66 transitions, 447 flow [2023-08-27 11:11:25,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 219.25) internal successors, (7016), 32 states have internal predecessors, (7016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:25,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:25,990 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:11:26,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:26,203 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 [2023-08-27 11:11:26,204 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:26,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2064482016, now seen corresponding path program 2 times [2023-08-27 11:11:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:26,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870952329] [2023-08-27 11:11:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:26,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:26,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:26,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701508935] [2023-08-27 11:11:26,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:11:26,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:26,472 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) [2023-08-27 11:11:26,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 11:11:28,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:11:28,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:11:28,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 7160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:11:28,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-27 11:11:28,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:11:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-27 11:11:28,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870952329] [2023-08-27 11:11:28,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701508935] [2023-08-27 11:11:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701508935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:11:28,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 11:11:28,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-27 11:11:28,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828574253] [2023-08-27 11:11:28,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 11:11:28,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:11:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:11:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:11:28,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 11:11:28,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 66 transitions, 447 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:28,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:28,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 11:11:28,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:29,471 INFO L124 PetriNetUnfolderBase]: 437/831 cut-off events. [2023-08-27 11:11:29,471 INFO L125 PetriNetUnfolderBase]: For 1771/1771 co-relation queries the response was YES. [2023-08-27 11:11:29,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2190 conditions, 831 events. 437/831 cut-off events. For 1771/1771 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2754 event pairs, 340 based on Foata normal form. 3/558 useless extension candidates. Maximal degree in co-relation 1589. Up to 699 conditions per place. [2023-08-27 11:11:29,477 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 157 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2023-08-27 11:11:29,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 163 transitions, 1593 flow [2023-08-27 11:11:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:11:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:11:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-08-27 11:11:29,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2023-08-27 11:11:29,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-08-27 11:11:29,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-08-27 11:11:29,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:29,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-08-27 11:11:29,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:29,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:29,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:29,492 INFO L175 Difference]: Start difference. First operand has 122 places, 66 transitions, 447 flow. Second operand 6 states and 1336 transitions. [2023-08-27 11:11:29,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 163 transitions, 1593 flow [2023-08-27 11:11:29,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1207 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-08-27 11:11:29,502 INFO L231 Difference]: Finished difference. Result has 108 places, 69 transitions, 516 flow [2023-08-27 11:11:29,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=108, PETRI_TRANSITIONS=69} [2023-08-27 11:11:29,502 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2023-08-27 11:11:29,503 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 69 transitions, 516 flow [2023-08-27 11:11:29,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:29,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:29,503 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:11:29,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:29,725 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 [2023-08-27 11:11:29,725 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:29,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash 894894867, now seen corresponding path program 1 times [2023-08-27 11:11:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:29,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690151538] [2023-08-27 11:11:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:30,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378133425] [2023-08-27 11:11:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:30,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:30,882 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) [2023-08-27 11:11:30,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 11:11:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:11:38,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 28345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:11:38,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-27 11:11:38,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:11:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-27 11:11:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690151538] [2023-08-27 11:11:38,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378133425] [2023-08-27 11:11:38,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378133425] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:11:38,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 11:11:38,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-27 11:11:38,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858245379] [2023-08-27 11:11:38,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 11:11:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:11:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:11:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:11:38,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 11:11:38,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 69 transitions, 516 flow. Second operand has 12 states, 12 states have (on average 217.75) internal successors, (2613), 12 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:38,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:38,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 11:11:38,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:39,682 INFO L124 PetriNetUnfolderBase]: 443/1029 cut-off events. [2023-08-27 11:11:39,682 INFO L125 PetriNetUnfolderBase]: For 5647/5647 co-relation queries the response was YES. [2023-08-27 11:11:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1029 events. 443/1029 cut-off events. For 5647/5647 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2759 event pairs, 340 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 1548. Up to 699 conditions per place. [2023-08-27 11:11:39,690 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 349 selfloop transitions, 12 changer transitions 0/361 dead transitions. [2023-08-27 11:11:39,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 361 transitions, 2897 flow [2023-08-27 11:11:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:11:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:11:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2647 transitions. [2023-08-27 11:11:39,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376653439153439 [2023-08-27 11:11:39,693 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2647 transitions. [2023-08-27 11:11:39,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2647 transitions. [2023-08-27 11:11:39,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:39,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2647 transitions. [2023-08-27 11:11:39,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.58333333333334) internal successors, (2647), 12 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:39,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:39,705 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:39,705 INFO L175 Difference]: Start difference. First operand has 108 places, 69 transitions, 516 flow. Second operand 12 states and 2647 transitions. [2023-08-27 11:11:39,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 361 transitions, 2897 flow [2023-08-27 11:11:39,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 361 transitions, 2895 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:11:39,723 INFO L231 Difference]: Finished difference. Result has 125 places, 76 transitions, 995 flow [2023-08-27 11:11:39,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=995, PETRI_PLACES=125, PETRI_TRANSITIONS=76} [2023-08-27 11:11:39,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2023-08-27 11:11:39,725 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 76 transitions, 995 flow [2023-08-27 11:11:39,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 217.75) internal successors, (2613), 12 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:39,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:39,725 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:11:39,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:39,953 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 [2023-08-27 11:11:39,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:39,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash -222091435, now seen corresponding path program 2 times [2023-08-27 11:11:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856817994] [2023-08-27 11:11:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:39,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:42,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622488620] [2023-08-27 11:11:42,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:11:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:42,727 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) [2023-08-27 11:11:42,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 11:11:51,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:11:51,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:11:51,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:11:51,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:11:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-27 11:11:51,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:11:51,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:11:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856817994] [2023-08-27 11:11:51,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:11:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622488620] [2023-08-27 11:11:51,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622488620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:11:51,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:11:51,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:11:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338988083] [2023-08-27 11:11:51,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:11:51,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:11:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:11:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:11:51,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:11:51,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 504 [2023-08-27 11:11:51,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 76 transitions, 995 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:51,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:11:51,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 504 [2023-08-27 11:11:51,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:11:51,983 INFO L124 PetriNetUnfolderBase]: 406/968 cut-off events. [2023-08-27 11:11:51,983 INFO L125 PetriNetUnfolderBase]: For 6224/6224 co-relation queries the response was YES. [2023-08-27 11:11:51,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 968 events. 406/968 cut-off events. For 6224/6224 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2725 event pairs, 76 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 1432. Up to 518 conditions per place. [2023-08-27 11:11:51,990 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 88 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-27 11:11:51,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 90 transitions, 1205 flow [2023-08-27 11:11:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:11:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:11:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-27 11:11:51,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-08-27 11:11:51,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-27 11:11:51,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-27 11:11:51,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:11:51,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-27 11:11:51,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:51,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:51,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:51,995 INFO L175 Difference]: Start difference. First operand has 125 places, 76 transitions, 995 flow. Second operand 3 states and 705 transitions. [2023-08-27 11:11:51,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 90 transitions, 1205 flow [2023-08-27 11:11:52,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 90 transitions, 1199 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:11:52,012 INFO L231 Difference]: Finished difference. Result has 123 places, 75 transitions, 991 flow [2023-08-27 11:11:52,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=991, PETRI_PLACES=123, PETRI_TRANSITIONS=75} [2023-08-27 11:11:52,013 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2023-08-27 11:11:52,013 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 75 transitions, 991 flow [2023-08-27 11:11:52,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:11:52,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:11:52,014 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:11:52,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 11:11:52,241 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 [2023-08-27 11:11:52,241 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:11:52,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:11:52,241 INFO L85 PathProgramCache]: Analyzing trace with hash -222091465, now seen corresponding path program 1 times [2023-08-27 11:11:52,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:11:52,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454366342] [2023-08-27 11:11:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:52,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:11:55,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:11:55,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106863627] [2023-08-27 11:11:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:11:55,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:11:55,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:11:55,033 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) [2023-08-27 11:11:55,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 11:12:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:12:17,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 70705 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 11:12:17,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:12:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-27 11:12:17,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:12:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:12:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454366342] [2023-08-27 11:12:17,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 11:12:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106863627] [2023-08-27 11:12:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106863627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:12:17,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:12:17,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:12:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774928058] [2023-08-27 11:12:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:12:17,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:12:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:12:17,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:12:17,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:12:17,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 504 [2023-08-27 11:12:17,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 75 transitions, 991 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:12:17,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:12:17,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 504 [2023-08-27 11:12:17,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:12:17,799 INFO L124 PetriNetUnfolderBase]: 369/907 cut-off events. [2023-08-27 11:12:17,799 INFO L125 PetriNetUnfolderBase]: For 6123/6123 co-relation queries the response was YES. [2023-08-27 11:12:17,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 907 events. 369/907 cut-off events. For 6123/6123 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2447 event pairs, 10 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 1746. Up to 536 conditions per place. [2023-08-27 11:12:17,804 INFO L140 encePairwiseOnDemand]: 502/504 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-27 11:12:17,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 89 transitions, 1199 flow [2023-08-27 11:12:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:12:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:12:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2023-08-27 11:12:17,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2023-08-27 11:12:17,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2023-08-27 11:12:17,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2023-08-27 11:12:17,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:12:17,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2023-08-27 11:12:17,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:12:17,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:12:17,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:12:17,809 INFO L175 Difference]: Start difference. First operand has 123 places, 75 transitions, 991 flow. Second operand 3 states and 704 transitions. [2023-08-27 11:12:17,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 89 transitions, 1199 flow [2023-08-27 11:12:17,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 89 transitions, 1195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:12:17,826 INFO L231 Difference]: Finished difference. Result has 122 places, 74 transitions, 987 flow [2023-08-27 11:12:17,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=987, PETRI_PLACES=122, PETRI_TRANSITIONS=74} [2023-08-27 11:12:17,827 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2023-08-27 11:12:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 74 transitions, 987 flow [2023-08-27 11:12:17,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:12:17,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:12:17,827 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:12:18,041 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process [2023-08-27 11:12:18,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 11:12:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:12:18,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:12:18,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:12:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -222091453, now seen corresponding path program 3 times [2023-08-27 11:12:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:12:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410758989] [2023-08-27 11:12:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:12:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:12:21,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 11:12:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731257113] [2023-08-27 11:12:21,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 11:12:21,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:12:21,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:12:21,168 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:12:21,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-08-27 11:24:02,070 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:24:02,070 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 [2023-08-27 11:24:03,271 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 [2023-08-27 11:24:03,282 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-08-27 11:24:03,297 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 [2023-08-27 11:24:03,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-27 11:24:03,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-08-27 11:24:03,324 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-27 11:24:03,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:24:03,324 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-27 11:24:03,325 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-27 11:24:03,326 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-27 11:24:03,327 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-27 11:24:03,328 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-27 11:24:03,328 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-27 11:24:03,328 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 1, 1, 1, 1] [2023-08-27 11:24:03,332 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:24:03,332 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:24:03,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:24:03 BasicIcfg [2023-08-27 11:24:03,336 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:24:03,336 INFO L158 Benchmark]: Toolchain (without parser) took 853452.10ms. Allocated memory was 358.6MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 332.6MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. [2023-08-27 11:24:03,336 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 358.6MB. Free memory was 335.1MB in the beginning and 335.0MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:24:03,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.33ms. Allocated memory is still 358.6MB. Free memory was 332.6MB in the beginning and 301.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-27 11:24:03,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.75ms. Allocated memory is still 358.6MB. Free memory was 301.5MB in the beginning and 298.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:24:03,337 INFO L158 Benchmark]: Boogie Preprocessor took 61.50ms. Allocated memory is still 358.6MB. Free memory was 298.7MB in the beginning and 296.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:24:03,337 INFO L158 Benchmark]: RCFGBuilder took 542.10ms. Allocated memory is still 358.6MB. Free memory was 296.6MB in the beginning and 328.1MB in the end (delta: -31.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-27 11:24:03,338 INFO L158 Benchmark]: TraceAbstraction took 852134.34ms. Allocated memory was 358.6MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 326.8MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. [2023-08-27 11:24:03,339 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 358.6MB. Free memory was 335.1MB in the beginning and 335.0MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 629.33ms. Allocated memory is still 358.6MB. Free memory was 332.6MB in the beginning and 301.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 77.75ms. Allocated memory is still 358.6MB. Free memory was 301.5MB in the beginning and 298.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 61.50ms. Allocated memory is still 358.6MB. Free memory was 298.7MB in the beginning and 296.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 542.10ms. Allocated memory is still 358.6MB. Free memory was 296.6MB in the beginning and 328.1MB in the end (delta: -31.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 852134.34ms. Allocated memory was 358.6MB in the beginning and 5.3GB in the end (delta: 4.9GB). Free memory was 326.8MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 1071]: Unsoundness Warning unspecified type, defaulting to int C: long [1071] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 73.1s, 230 PlacesBefore, 40 PlacesAfterwards, 240 TransitionsBefore, 39 TransitionsAfterwards, 7154 CoEnabledTransitionPairs, 7 FixpointIterations, 127 TrivialSequentialCompositions, 94 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 15 ConcurrentYvCompositions, 11 ChoiceCompositions, 262 TotalNumberOfCompositions, 7085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5935, independent: 5842, independent conditional: 0, independent unconditional: 5842, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3931, independent: 3902, independent conditional: 0, independent unconditional: 3902, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5935, independent: 1940, independent conditional: 0, independent unconditional: 1940, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 3931, unknown conditional: 0, unknown unconditional: 3931] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1069]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1070]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 273 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 852.0s, OverallIterations: 15, TraceHistogramMax: 300, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 73.3s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1536 IncrementalHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 0 mSDtfsCounter, 1536 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1193 GetRequests, 1082 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=995occurred in iteration=12, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.1s SsaConstructionTime, 16.0s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 949 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1193 ConstructedInterpolants, 27 QuantifiedInterpolants, 2496 SizeOfPredicates, 5 NumberOfNonLiveVariables, 117294 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 101225/113464 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown