./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:34:55,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:34:55,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:34:55,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:34:55,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:34:55,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:34:55,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:34:55,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:34:55,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:34:55,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:34:55,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:34:55,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:34:55,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:34:55,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:34:55,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:34:55,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:34:55,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:34:55,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:34:55,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:34:55,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:34:55,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:34:55,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:34:55,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:34:55,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:34:55,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:34:55,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:34:55,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:34:55,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:34:55,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:34:55,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:34:55,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:34:55,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:34:55,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:34:55,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:34:55,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:34:55,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:34:55,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:34:55,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:34:55,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:34:55,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:34:55,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:34:55,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:34:55,721 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:34:55,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:34:55,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:34:55,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:34:55,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:34:55,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:34:55,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:34:55,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:34:55,724 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:34:55,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:34:55,725 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:34:55,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:34:55,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:34:55,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:34:55,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:34:55,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:34:55,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:34:55,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:34:55,727 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:34:55,727 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:34:55,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:34:55,727 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:34:55,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:34:55,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:34:55,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:34:55,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:34:55,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:34:55,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:34:55,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:34:55,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:34:55,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:34:55,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:34:55,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:34:55,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:34:55,730 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:34:55,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:34:55,730 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:34:55,731 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:34:56,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:34:56,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:34:56,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:34:56,082 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:34:56,082 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:34:56,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-08-30 15:34:57,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:34:57,362 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:34:57,363 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-08-30 15:34:57,371 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ceaadb1/71e4f69904644e568d5fff00c1d428d0/FLAG3e5643297 [2023-08-30 15:34:57,381 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ceaadb1/71e4f69904644e568d5fff00c1d428d0 [2023-08-30 15:34:57,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:34:57,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:34:57,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:34:57,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:34:57,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:34:57,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79fddfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57, skipping insertion in model container [2023-08-30 15:34:57,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:34:57,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:34:57,598 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2023-08-30 15:34:57,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:34:57,622 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:34:57,660 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2023-08-30 15:34:57,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:34:57,679 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:34:57,680 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:34:57,692 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:34:57,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57 WrapperNode [2023-08-30 15:34:57,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:34:57,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:34:57,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:34:57,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:34:57,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,758 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 244 [2023-08-30 15:34:57,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:34:57,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:34:57,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:34:57,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:34:57,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:34:57,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:34:57,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:34:57,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:34:57,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (1/1) ... [2023-08-30 15:34:57,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:34:57,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:57,849 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) [2023-08-30 15:34:57,885 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 [2023-08-30 15:34:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:34:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:34:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:34:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:34:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:34:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:34:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:34:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:34:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:34:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:34:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:34:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:34:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:34:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:34:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:34:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:34:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:34:57,898 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:34:58,054 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:34:58,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:34:58,450 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:34:58,925 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:34:58,926 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:34:58,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:34:58 BoogieIcfgContainer [2023-08-30 15:34:58,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:34:58,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:34:58,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:34:58,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:34:58,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:34:57" (1/3) ... [2023-08-30 15:34:58,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b63f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:34:58, skipping insertion in model container [2023-08-30 15:34:58,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:34:57" (2/3) ... [2023-08-30 15:34:58,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b63f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:34:58, skipping insertion in model container [2023-08-30 15:34:58,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:34:58" (3/3) ... [2023-08-30 15:34:58,936 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2023-08-30 15:34:58,943 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:34:58,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:34:58,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 15:34:58,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:34:59,125 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:34:59,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 176 transitions, 376 flow [2023-08-30 15:34:59,263 INFO L130 PetriNetUnfolder]: 12/173 cut-off events. [2023-08-30 15:34:59,263 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:34:59,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 12/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-08-30 15:34:59,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 176 transitions, 376 flow [2023-08-30 15:34:59,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 155 transitions, 325 flow [2023-08-30 15:34:59,281 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:34:59,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 155 transitions, 325 flow [2023-08-30 15:34:59,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 155 transitions, 325 flow [2023-08-30 15:34:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 155 transitions, 325 flow [2023-08-30 15:34:59,361 INFO L130 PetriNetUnfolder]: 11/155 cut-off events. [2023-08-30 15:34:59,362 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:34:59,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 155 events. 11/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-08-30 15:34:59,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-30 15:35:13,527 INFO L134 LiptonReduction]: Checked pairs total: 5038 [2023-08-30 15:35:13,528 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-30 15:35:13,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:35:13,543 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@650ecfb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:35:13,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 15:35:13,544 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:35:13,545 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:35:13,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:13,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:35:13,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:13,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash 32650, now seen corresponding path program 1 times [2023-08-30 15:35:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:13,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478592867] [2023-08-30 15:35:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:13,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:13,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478592867] [2023-08-30 15:35:13,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478592867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:13,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:13,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:35:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177175060] [2023-08-30 15:35:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:13,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:13,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:35:13,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-08-30 15:35:13,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:13,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:13,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-08-30 15:35:13,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:16,703 INFO L130 PetriNetUnfolder]: 14481/18123 cut-off events. [2023-08-30 15:35:16,703 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2023-08-30 15:35:16,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36614 conditions, 18123 events. 14481/18123 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 2048. Compared 91034 event pairs, 7051 based on Foata normal form. 0/4174 useless extension candidates. Maximal degree in co-relation 16644. Up to 8978 conditions per place. [2023-08-30 15:35:16,834 INFO L137 encePairwiseOnDemand]: 324/334 looper letters, 73 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 15:35:16,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 336 flow [2023-08-30 15:35:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:35:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:35:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-30 15:35:16,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.499001996007984 [2023-08-30 15:35:16,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-30 15:35:16,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-30 15:35:16,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:16,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-30 15:35:16,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:16,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:16,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:16,870 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 500 transitions. [2023-08-30 15:35:16,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 336 flow [2023-08-30 15:35:16,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 78 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:35:16,914 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2023-08-30 15:35:16,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 15:35:16,919 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-08-30 15:35:16,919 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2023-08-30 15:35:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:16,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:16,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:35:16,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:35:16,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:16,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1013335, now seen corresponding path program 1 times [2023-08-30 15:35:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138756175] [2023-08-30 15:35:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138756175] [2023-08-30 15:35:17,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138756175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725507676] [2023-08-30 15:35:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:17,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:17,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:17,033 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) [2023-08-30 15:35:17,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:35:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:17,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:35:17,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:17,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:17,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:35:17,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725507676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:17,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:35:17,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:35:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270754518] [2023-08-30 15:35:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:17,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:35:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:35:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:35:17,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-08-30 15:35:17,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:17,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:17,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-08-30 15:35:17,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:19,597 INFO L130 PetriNetUnfolder]: 14481/18122 cut-off events. [2023-08-30 15:35:19,598 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 15:35:19,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36416 conditions, 18122 events. 14481/18122 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 91355 event pairs, 7051 based on Foata normal form. 0/4176 useless extension candidates. Maximal degree in co-relation 18216. Up to 8978 conditions per place. [2023-08-30 15:35:19,696 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 72 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 15:35:19,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 324 flow [2023-08-30 15:35:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:35:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:35:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-30 15:35:19,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663173652694611 [2023-08-30 15:35:19,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-30 15:35:19,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-30 15:35:19,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:19,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-30 15:35:19,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:19,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:19,705 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:19,706 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 4 states and 623 transitions. [2023-08-30 15:35:19,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 324 flow [2023-08-30 15:35:19,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:35:19,708 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 102 flow [2023-08-30 15:35:19,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 15:35:19,709 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 15:35:19,709 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 102 flow [2023-08-30 15:35:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:19,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:19,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:35:19,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:19,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:19,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:19,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1013334, now seen corresponding path program 1 times [2023-08-30 15:35:19,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:19,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421016585] [2023-08-30 15:35:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:19,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:20,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:20,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421016585] [2023-08-30 15:35:20,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421016585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096447234] [2023-08-30 15:35:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:20,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:20,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:20,048 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) [2023-08-30 15:35:20,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:35:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:20,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:35:20,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:20,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:20,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096447234] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:20,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:20,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:35:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076999966] [2023-08-30 15:35:20,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:35:20,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:35:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:35:20,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-08-30 15:35:20,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:20,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:20,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-08-30 15:35:20,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:25,060 INFO L130 PetriNetUnfolder]: 36177/45278 cut-off events. [2023-08-30 15:35:25,060 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 15:35:25,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90975 conditions, 45278 events. 36177/45278 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 3779. Compared 247075 event pairs, 17626 based on Foata normal form. 0/10437 useless extension candidates. Maximal degree in co-relation 72747. Up to 8978 conditions per place. [2023-08-30 15:35:25,267 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 177 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2023-08-30 15:35:25,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 185 transitions, 782 flow [2023-08-30 15:35:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:35:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:35:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2023-08-30 15:35:25,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024950099800399 [2023-08-30 15:35:25,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1007 transitions. [2023-08-30 15:35:25,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1007 transitions. [2023-08-30 15:35:25,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:25,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1007 transitions. [2023-08-30 15:35:25,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:25,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:25,278 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:25,278 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 102 flow. Second operand 6 states and 1007 transitions. [2023-08-30 15:35:25,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 185 transitions, 782 flow [2023-08-30 15:35:25,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 185 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:35:25,283 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 135 flow [2023-08-30 15:35:25,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-30 15:35:25,288 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-08-30 15:35:25,288 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 135 flow [2023-08-30 15:35:25,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:25,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:25,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:35:25,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:25,494 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,SelfDestructingSolverStorable2 [2023-08-30 15:35:25,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:25,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash 974123998, now seen corresponding path program 1 times [2023-08-30 15:35:25,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:25,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418606432] [2023-08-30 15:35:25,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:25,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418606432] [2023-08-30 15:35:25,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418606432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:25,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:25,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:35:25,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008039540] [2023-08-30 15:35:25,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:25,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:35:25,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:25,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:35:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:35:25,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 334 [2023-08-30 15:35:25,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 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) [2023-08-30 15:35:25,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:25,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 334 [2023-08-30 15:35:25,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:29,195 INFO L130 PetriNetUnfolder]: 26541/34476 cut-off events. [2023-08-30 15:35:29,195 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-08-30 15:35:29,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69383 conditions, 34476 events. 26541/34476 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 3458. Compared 205340 event pairs, 14963 based on Foata normal form. 0/9387 useless extension candidates. Maximal degree in co-relation 63669. Up to 31319 conditions per place. [2023-08-30 15:35:29,329 INFO L137 encePairwiseOnDemand]: 322/334 looper letters, 87 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-08-30 15:35:29,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 93 transitions, 422 flow [2023-08-30 15:35:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:35:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:35:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2023-08-30 15:35:29,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502994011976048 [2023-08-30 15:35:29,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2023-08-30 15:35:29,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2023-08-30 15:35:29,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:29,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2023-08-30 15:35:29,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:29,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:29,338 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:29,338 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 135 flow. Second operand 5 states and 752 transitions. [2023-08-30 15:35:29,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 93 transitions, 422 flow [2023-08-30 15:35:29,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 414 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:35:29,340 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 167 flow [2023-08-30 15:35:29,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-08-30 15:35:29,341 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-30 15:35:29,342 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 167 flow [2023-08-30 15:35:29,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 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) [2023-08-30 15:35:29,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:29,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:35:29,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:35:29,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:29,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:29,343 INFO L85 PathProgramCache]: Analyzing trace with hash 124939822, now seen corresponding path program 1 times [2023-08-30 15:35:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:29,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123451331] [2023-08-30 15:35:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:35:29,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:29,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123451331] [2023-08-30 15:35:29,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123451331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:29,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:29,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:35:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277230496] [2023-08-30 15:35:29,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:29,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:29,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:35:29,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-08-30 15:35:29,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:29,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:29,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-08-30 15:35:29,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:35,696 INFO L130 PetriNetUnfolder]: 48517/61540 cut-off events. [2023-08-30 15:35:35,696 INFO L131 PetriNetUnfolder]: For 6444/8262 co-relation queries the response was YES. [2023-08-30 15:35:35,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138528 conditions, 61540 events. 48517/61540 cut-off events. For 6444/8262 co-relation queries the response was YES. Maximal size of possible extension queue 5500. Compared 370137 event pairs, 15031 based on Foata normal form. 18/19073 useless extension candidates. Maximal degree in co-relation 132498. Up to 34681 conditions per place. [2023-08-30 15:35:36,156 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 73 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-30 15:35:36,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 400 flow [2023-08-30 15:35:36,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:35:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:35:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 15:35:36,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502994011976047 [2023-08-30 15:35:36,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 15:35:36,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 15:35:36,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:36,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 15:35:36,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:36,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:36,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:36,163 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 167 flow. Second operand 3 states and 486 transitions. [2023-08-30 15:35:36,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 400 flow [2023-08-30 15:35:36,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 394 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 15:35:36,170 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 180 flow [2023-08-30 15:35:36,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-08-30 15:35:36,171 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-08-30 15:35:36,171 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 180 flow [2023-08-30 15:35:36,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:36,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:36,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:35:36,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:35:36,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:36,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 124939761, now seen corresponding path program 1 times [2023-08-30 15:35:36,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:36,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112723398] [2023-08-30 15:35:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:36,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:35:36,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:36,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112723398] [2023-08-30 15:35:36,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112723398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:35:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087614716] [2023-08-30 15:35:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:35:36,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-08-30 15:35:36,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:36,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:36,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-08-30 15:35:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:41,187 INFO L130 PetriNetUnfolder]: 38938/49690 cut-off events. [2023-08-30 15:35:41,188 INFO L131 PetriNetUnfolder]: For 6811/7938 co-relation queries the response was YES. [2023-08-30 15:35:41,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115155 conditions, 49690 events. 38938/49690 cut-off events. For 6811/7938 co-relation queries the response was YES. Maximal size of possible extension queue 4537. Compared 295138 event pairs, 7839 based on Foata normal form. 1127/18482 useless extension candidates. Maximal degree in co-relation 111226. Up to 32389 conditions per place. [2023-08-30 15:35:41,425 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 70 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 15:35:41,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 393 flow [2023-08-30 15:35:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:35:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:35:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 15:35:41,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502994011976047 [2023-08-30 15:35:41,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 15:35:41,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 15:35:41,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:41,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 15:35:41,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:41,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:41,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:41,431 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 180 flow. Second operand 3 states and 486 transitions. [2023-08-30 15:35:41,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 393 flow [2023-08-30 15:35:41,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:35:41,439 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 187 flow [2023-08-30 15:35:41,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-08-30 15:35:41,440 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-30 15:35:41,440 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 187 flow [2023-08-30 15:35:41,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:41,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:41,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:35:41,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:35:41,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:41,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:41,441 INFO L85 PathProgramCache]: Analyzing trace with hash 124939757, now seen corresponding path program 1 times [2023-08-30 15:35:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:41,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943127171] [2023-08-30 15:35:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:41,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:41,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943127171] [2023-08-30 15:35:41,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943127171] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878676643] [2023-08-30 15:35:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:41,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:41,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:41,773 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) [2023-08-30 15:35:41,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:35:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:41,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:35:41,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:41,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:35:42,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:42,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:42,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:42,097 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:42,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-30 15:35:42,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:42,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-30 15:35:42,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 15:35:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:42,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878676643] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:42,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:42,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 15:35:42,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258480720] [2023-08-30 15:35:42,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:35:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:35:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=119, Unknown=2, NotChecked=0, Total=156 [2023-08-30 15:35:42,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 334 [2023-08-30 15:35:42,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 117.3076923076923) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:42,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:42,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 334 [2023-08-30 15:35:42,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:49,267 INFO L130 PetriNetUnfolder]: 50961/66868 cut-off events. [2023-08-30 15:35:49,268 INFO L131 PetriNetUnfolder]: For 17490/17634 co-relation queries the response was YES. [2023-08-30 15:35:49,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154135 conditions, 66868 events. 50961/66868 cut-off events. For 17490/17634 co-relation queries the response was YES. Maximal size of possible extension queue 6877. Compared 446816 event pairs, 16314 based on Foata normal form. 0/23965 useless extension candidates. Maximal degree in co-relation 148322. Up to 42769 conditions per place. [2023-08-30 15:35:49,601 INFO L137 encePairwiseOnDemand]: 321/334 looper letters, 87 selfloop transitions, 19 changer transitions 0/108 dead transitions. [2023-08-30 15:35:49,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 569 flow [2023-08-30 15:35:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:35:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:35:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1031 transitions. [2023-08-30 15:35:49,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38585329341317365 [2023-08-30 15:35:49,605 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1031 transitions. [2023-08-30 15:35:49,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1031 transitions. [2023-08-30 15:35:49,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:49,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1031 transitions. [2023-08-30 15:35:49,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.875) internal successors, (1031), 8 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:49,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:49,612 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:49,612 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 187 flow. Second operand 8 states and 1031 transitions. [2023-08-30 15:35:49,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 569 flow [2023-08-30 15:35:49,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:35:49,621 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 304 flow [2023-08-30 15:35:49,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-30 15:35:49,622 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-30 15:35:49,622 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 304 flow [2023-08-30 15:35:49,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.3076923076923) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:49,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:49,623 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:35:49,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:49,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:49,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:49,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:49,829 INFO L85 PathProgramCache]: Analyzing trace with hash 124668617, now seen corresponding path program 2 times [2023-08-30 15:35:49,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:49,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783588711] [2023-08-30 15:35:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:49,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:49,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:49,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783588711] [2023-08-30 15:35:49,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783588711] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589983778] [2023-08-30 15:35:49,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:35:49,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:49,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:49,893 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) [2023-08-30 15:35:49,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:35:50,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:35:50,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:35:50,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:35:50,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:35:50,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:35:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589983778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:50,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:35:50,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:35:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688688786] [2023-08-30 15:35:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:50,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:50,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:35:50,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-08-30 15:35:50,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:50,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:50,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-08-30 15:35:50,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:56,585 INFO L130 PetriNetUnfolder]: 48546/63641 cut-off events. [2023-08-30 15:35:56,586 INFO L131 PetriNetUnfolder]: For 37450/39432 co-relation queries the response was YES. [2023-08-30 15:35:56,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152709 conditions, 63641 events. 48546/63641 cut-off events. For 37450/39432 co-relation queries the response was YES. Maximal size of possible extension queue 6681. Compared 422238 event pairs, 25339 based on Foata normal form. 1767/26138 useless extension candidates. Maximal degree in co-relation 148756. Up to 63132 conditions per place. [2023-08-30 15:35:56,914 INFO L137 encePairwiseOnDemand]: 332/334 looper letters, 53 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 15:35:56,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 402 flow [2023-08-30 15:35:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:35:56,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:35:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 15:35:56,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45109780439121755 [2023-08-30 15:35:56,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 15:35:56,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 15:35:56,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:56,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 15:35:56,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:56,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:56,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:35:56,919 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 304 flow. Second operand 3 states and 452 transitions. [2023-08-30 15:35:56,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 402 flow [2023-08-30 15:35:56,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 381 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 15:35:56,942 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 275 flow [2023-08-30 15:35:56,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 15:35:56,943 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-30 15:35:56,943 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 275 flow [2023-08-30 15:35:56,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:56,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:56,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:35:56,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:57,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:57,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:35:57,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash 124939758, now seen corresponding path program 1 times [2023-08-30 15:35:57,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:57,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737273430] [2023-08-30 15:35:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:57,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:57,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:57,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737273430] [2023-08-30 15:35:57,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737273430] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:57,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479753445] [2023-08-30 15:35:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:57,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:57,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:57,383 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) [2023-08-30 15:35:57,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:35:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:57,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:35:57,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:57,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:35:57,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:57,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:35:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:57,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:57,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:57,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-30 15:35:57,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:57,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-30 15:35:57,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 15:35:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479753445] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:57,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:57,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 15:35:57,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821802498] [2023-08-30 15:35:57,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:57,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:35:57,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:57,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:35:57,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:35:57,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 334 [2023-08-30 15:35:57,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 122.25) internal successors, (1467), 12 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:57,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:57,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 334 [2023-08-30 15:35:57,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:05,262 INFO L130 PetriNetUnfolder]: 54413/71683 cut-off events. [2023-08-30 15:36:05,262 INFO L131 PetriNetUnfolder]: For 41741/41885 co-relation queries the response was YES. [2023-08-30 15:36:05,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171461 conditions, 71683 events. 54413/71683 cut-off events. For 41741/41885 co-relation queries the response was YES. Maximal size of possible extension queue 7620. Compared 489057 event pairs, 19277 based on Foata normal form. 4/27484 useless extension candidates. Maximal degree in co-relation 171444. Up to 47529 conditions per place. [2023-08-30 15:36:05,612 INFO L137 encePairwiseOnDemand]: 321/334 looper letters, 86 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2023-08-30 15:36:05,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 624 flow [2023-08-30 15:36:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:36:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:36:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1069 transitions. [2023-08-30 15:36:05,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000748502994012 [2023-08-30 15:36:05,615 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1069 transitions. [2023-08-30 15:36:05,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1069 transitions. [2023-08-30 15:36:05,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:05,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1069 transitions. [2023-08-30 15:36:05,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.625) internal successors, (1069), 8 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:05,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:05,622 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:05,622 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 275 flow. Second operand 8 states and 1069 transitions. [2023-08-30 15:36:05,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 624 flow [2023-08-30 15:36:05,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:36:05,651 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 349 flow [2023-08-30 15:36:05,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=349, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-08-30 15:36:05,651 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-30 15:36:05,652 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 349 flow [2023-08-30 15:36:05,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.25) internal successors, (1467), 12 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:05,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:05,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:05,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 15:36:05,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:05,857 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:36:05,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:05,858 INFO L85 PathProgramCache]: Analyzing trace with hash -163579960, now seen corresponding path program 1 times [2023-08-30 15:36:05,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:05,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212978828] [2023-08-30 15:36:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:05,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:05,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212978828] [2023-08-30 15:36:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212978828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:36:05,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:36:05,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:36:05,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238440964] [2023-08-30 15:36:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:36:05,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:36:05,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:36:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:36:05,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-08-30 15:36:05,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:05,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:05,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-08-30 15:36:05,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:15,044 INFO L130 PetriNetUnfolder]: 67239/89778 cut-off events. [2023-08-30 15:36:15,044 INFO L131 PetriNetUnfolder]: For 92791/95210 co-relation queries the response was YES. [2023-08-30 15:36:15,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223476 conditions, 89778 events. 67239/89778 cut-off events. For 92791/95210 co-relation queries the response was YES. Maximal size of possible extension queue 9455. Compared 626484 event pairs, 9950 based on Foata normal form. 2299/37981 useless extension candidates. Maximal degree in co-relation 223457. Up to 66155 conditions per place. [2023-08-30 15:36:15,553 INFO L137 encePairwiseOnDemand]: 323/334 looper letters, 82 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-08-30 15:36:15,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 688 flow [2023-08-30 15:36:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:36:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:36:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 15:36:15,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48403193612774453 [2023-08-30 15:36:15,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 15:36:15,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 15:36:15,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:15,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 15:36:15,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:15,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:36:15,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:36:15,558 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 349 flow. Second operand 3 states and 485 transitions. [2023-08-30 15:36:15,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 688 flow [2023-08-30 15:36:15,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 679 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:36:15,598 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 416 flow [2023-08-30 15:36:15,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2023-08-30 15:36:15,598 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-08-30 15:36:15,598 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 416 flow [2023-08-30 15:36:15,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:15,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:15,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:15,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:36:15,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:36:15,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash -163579858, now seen corresponding path program 1 times [2023-08-30 15:36:15,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:15,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722598293] [2023-08-30 15:36:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:15,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:15,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722598293] [2023-08-30 15:36:15,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722598293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:36:15,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:36:15,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:36:15,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265392674] [2023-08-30 15:36:15,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:36:15,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:36:15,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:36:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:36:15,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-08-30 15:36:15,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:15,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:15,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-08-30 15:36:15,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:27,545 INFO L130 PetriNetUnfolder]: 76820/110533 cut-off events. [2023-08-30 15:36:27,545 INFO L131 PetriNetUnfolder]: For 180322/185890 co-relation queries the response was YES. [2023-08-30 15:36:27,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339326 conditions, 110533 events. 76820/110533 cut-off events. For 180322/185890 co-relation queries the response was YES. Maximal size of possible extension queue 12250. Compared 951075 event pairs, 28603 based on Foata normal form. 3584/74935 useless extension candidates. Maximal degree in co-relation 339304. Up to 64611 conditions per place. [2023-08-30 15:36:28,208 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 103 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-30 15:36:28,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 841 flow [2023-08-30 15:36:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:36:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:36:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 15:36:28,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820359281437126 [2023-08-30 15:36:28,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 15:36:28,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 15:36:28,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:28,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 15:36:28,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:28,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:36:28,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:36:28,213 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 416 flow. Second operand 3 states and 483 transitions. [2023-08-30 15:36:28,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 841 flow [2023-08-30 15:36:29,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:36:29,017 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 427 flow [2023-08-30 15:36:29,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-30 15:36:29,018 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2023-08-30 15:36:29,018 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 427 flow [2023-08-30 15:36:29,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:29,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:29,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:36:29,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:36:29,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -163579961, now seen corresponding path program 1 times [2023-08-30 15:36:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:29,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050268849] [2023-08-30 15:36:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:29,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:29,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050268849] [2023-08-30 15:36:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050268849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:36:29,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:36:29,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:36:29,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958383749] [2023-08-30 15:36:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:36:29,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:36:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:36:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:36:29,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-08-30 15:36:29,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:29,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:29,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-08-30 15:36:29,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:40,835 INFO L130 PetriNetUnfolder]: 74107/108446 cut-off events. [2023-08-30 15:36:40,835 INFO L131 PetriNetUnfolder]: For 152718/158589 co-relation queries the response was YES. [2023-08-30 15:36:41,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331556 conditions, 108446 events. 74107/108446 cut-off events. For 152718/158589 co-relation queries the response was YES. Maximal size of possible extension queue 13320. Compared 959117 event pairs, 15492 based on Foata normal form. 6635/70699 useless extension candidates. Maximal degree in co-relation 331534. Up to 82923 conditions per place. [2023-08-30 15:36:41,684 INFO L137 encePairwiseOnDemand]: 323/334 looper letters, 92 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-08-30 15:36:41,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 111 transitions, 848 flow [2023-08-30 15:36:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:36:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:36:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 15:36:41,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48403193612774453 [2023-08-30 15:36:41,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 15:36:41,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 15:36:41,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:41,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 15:36:41,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:41,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:36:41,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 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) [2023-08-30 15:36:41,691 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 427 flow. Second operand 3 states and 485 transitions. [2023-08-30 15:36:41,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 111 transitions, 848 flow [2023-08-30 15:36:41,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 843 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:36:41,854 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 584 flow [2023-08-30 15:36:41,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2023-08-30 15:36:41,855 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-08-30 15:36:41,855 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 584 flow [2023-08-30 15:36:41,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:41,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:41,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:36:41,856 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:36:41,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:41,856 INFO L85 PathProgramCache]: Analyzing trace with hash -163579964, now seen corresponding path program 1 times [2023-08-30 15:36:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:41,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907726745] [2023-08-30 15:36:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:41,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:41,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:41,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907726745] [2023-08-30 15:36:41,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907726745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:36:41,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:36:41,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:36:41,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028262506] [2023-08-30 15:36:41,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:36:41,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:36:41,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:41,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:36:41,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:36:42,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 334 [2023-08-30 15:36:42,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 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) [2023-08-30 15:36:42,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:42,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 334 [2023-08-30 15:36:42,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:54,442 INFO L130 PetriNetUnfolder]: 75998/111799 cut-off events. [2023-08-30 15:36:54,442 INFO L131 PetriNetUnfolder]: For 232916/236074 co-relation queries the response was YES. [2023-08-30 15:36:54,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392883 conditions, 111799 events. 75998/111799 cut-off events. For 232916/236074 co-relation queries the response was YES. Maximal size of possible extension queue 12171. Compared 972460 event pairs, 52129 based on Foata normal form. 3300/78231 useless extension candidates. Maximal degree in co-relation 392858. Up to 110626 conditions per place. [2023-08-30 15:36:55,180 INFO L137 encePairwiseOnDemand]: 325/334 looper letters, 112 selfloop transitions, 4 changer transitions 2/122 dead transitions. [2023-08-30 15:36:55,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 971 flow [2023-08-30 15:36:55,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:36:55,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:36:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-08-30 15:36:55,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359281437125748 [2023-08-30 15:36:55,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-08-30 15:36:55,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-08-30 15:36:55,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:55,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-08-30 15:36:55,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:55,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:55,186 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:55,186 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 584 flow. Second operand 5 states and 728 transitions. [2023-08-30 15:36:55,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 971 flow [2023-08-30 15:36:55,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:36:55,711 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 593 flow [2023-08-30 15:36:55,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2023-08-30 15:36:55,711 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2023-08-30 15:36:55,711 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 593 flow [2023-08-30 15:36:55,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 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) [2023-08-30 15:36:55,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:55,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:55,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:36:55,712 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:36:55,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash -421638827, now seen corresponding path program 1 times [2023-08-30 15:36:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:55,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001065136] [2023-08-30 15:36:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:55,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:55,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001065136] [2023-08-30 15:36:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001065136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025753036] [2023-08-30 15:36:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:55,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:55,903 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) [2023-08-30 15:36:55,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:36:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:56,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:36:56,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:56,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:36:56,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:56,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:56,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:56,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:56,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:56,205 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_382 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_382) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 15:36:56,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:56,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 15:36:56,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:56,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-08-30 15:36:56,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-30 15:36:56,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-30 15:36:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025753036] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:56,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 15:36:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60549724] [2023-08-30 15:36:56,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:36:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:36:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2023-08-30 15:36:56,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 334 [2023-08-30 15:36:56,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 593 flow. Second operand has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:56,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:56,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 334 [2023-08-30 15:36:56,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:08,228 INFO L130 PetriNetUnfolder]: 70170/103561 cut-off events. [2023-08-30 15:37:08,228 INFO L131 PetriNetUnfolder]: For 221451/223999 co-relation queries the response was YES. [2023-08-30 15:37:08,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371257 conditions, 103561 events. 70170/103561 cut-off events. For 221451/223999 co-relation queries the response was YES. Maximal size of possible extension queue 12319. Compared 930611 event pairs, 15569 based on Foata normal form. 2600/69558 useless extension candidates. Maximal degree in co-relation 371230. Up to 69569 conditions per place. [2023-08-30 15:37:08,920 INFO L137 encePairwiseOnDemand]: 322/334 looper letters, 159 selfloop transitions, 29 changer transitions 1/192 dead transitions. [2023-08-30 15:37:08,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 192 transitions, 1620 flow [2023-08-30 15:37:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:37:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:37:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 993 transitions. [2023-08-30 15:37:08,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716317365269461 [2023-08-30 15:37:08,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 993 transitions. [2023-08-30 15:37:08,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 993 transitions. [2023-08-30 15:37:08,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:08,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 993 transitions. [2023-08-30 15:37:08,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:08,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:08,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:08,929 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 593 flow. Second operand 8 states and 993 transitions. [2023-08-30 15:37:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 192 transitions, 1620 flow [2023-08-30 15:37:09,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 192 transitions, 1615 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:37:09,253 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 783 flow [2023-08-30 15:37:09,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=783, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2023-08-30 15:37:09,254 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2023-08-30 15:37:09,254 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 783 flow [2023-08-30 15:37:09,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:09,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:09,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:37:09,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:37:09,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:09,462 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:37:09,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -421638826, now seen corresponding path program 1 times [2023-08-30 15:37:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:09,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539312759] [2023-08-30 15:37:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:37:09,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539312759] [2023-08-30 15:37:09,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539312759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:37:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221701364] [2023-08-30 15:37:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:09,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:09,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:09,783 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) [2023-08-30 15:37:09,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:37:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:09,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:37:09,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:37:09,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:37:09,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:37:09,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:37:09,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:37:09,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:37:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:37:09,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:37:10,020 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_426 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-08-30 15:37:10,046 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:37:10,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-30 15:37:10,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:37:10,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-08-30 15:37:10,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-08-30 15:37:10,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-08-30 15:37:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:37:10,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221701364] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:37:10,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:37:10,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 15:37:10,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711424262] [2023-08-30 15:37:10,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:37:10,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:37:10,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:37:10,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2023-08-30 15:37:10,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 334 [2023-08-30 15:37:10,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 783 flow. Second operand has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:10,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:10,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 334 [2023-08-30 15:37:10,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:22,118 INFO L130 PetriNetUnfolder]: 71502/103253 cut-off events. [2023-08-30 15:37:22,118 INFO L131 PetriNetUnfolder]: For 274059/276495 co-relation queries the response was YES. [2023-08-30 15:37:22,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388401 conditions, 103253 events. 71502/103253 cut-off events. For 274059/276495 co-relation queries the response was YES. Maximal size of possible extension queue 12228. Compared 888772 event pairs, 26001 based on Foata normal form. 2488/68666 useless extension candidates. Maximal degree in co-relation 388372. Up to 69705 conditions per place. [2023-08-30 15:37:22,847 INFO L137 encePairwiseOnDemand]: 322/334 looper letters, 158 selfloop transitions, 30 changer transitions 1/192 dead transitions. [2023-08-30 15:37:22,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 192 transitions, 1706 flow [2023-08-30 15:37:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:37:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:37:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 992 transitions. [2023-08-30 15:37:22,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712574850299401 [2023-08-30 15:37:22,850 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 992 transitions. [2023-08-30 15:37:22,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 992 transitions. [2023-08-30 15:37:22,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:22,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 992 transitions. [2023-08-30 15:37:22,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:22,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:22,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:22,857 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 783 flow. Second operand 8 states and 992 transitions. [2023-08-30 15:37:22,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 192 transitions, 1706 flow [2023-08-30 15:37:23,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 192 transitions, 1678 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-30 15:37:23,611 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 824 flow [2023-08-30 15:37:23,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=824, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2023-08-30 15:37:23,612 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2023-08-30 15:37:23,612 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 824 flow [2023-08-30 15:37:23,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:23,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:23,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:37:23,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:37:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:23,819 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 15:37:23,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash -421830996, now seen corresponding path program 1 times [2023-08-30 15:37:23,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724736405] [2023-08-30 15:37:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:37:23,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724736405] [2023-08-30 15:37:23,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724736405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:37:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375172438] [2023-08-30 15:37:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:23,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:23,913 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) [2023-08-30 15:37:23,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:37:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:24,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:37:24,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:37:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:37:24,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:37:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:37:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375172438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:37:24,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:37:24,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 15:37:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726590639] [2023-08-30 15:37:24,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:37:24,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:37:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:37:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:37:24,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 334 [2023-08-30 15:37:24,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 824 flow. Second operand has 14 states, 14 states have (on average 129.28571428571428) internal successors, (1810), 14 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:24,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:24,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 334 [2023-08-30 15:37:24,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand