./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-context1.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/test-context1.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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --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 15:56:44,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:56:44,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:56:44,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:56:44,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:56:44,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:56:44,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:56:44,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:56:44,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:56:44,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:56:44,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:56:44,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:56:44,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:56:44,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:56:44,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:56:44,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:56:44,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:56:44,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:56:44,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:56:44,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:56:44,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:56:44,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:56:44,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:56:44,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:56:44,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:56:44,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:56:44,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:56:44,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:56:44,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:56:44,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:56:44,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:56:44,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:56:44,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:56:44,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:56:44,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:56:44,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:56:44,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:56:44,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:56:44,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:56:44,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:56:44,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:56:44,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:56:44,822 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:56:44,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:56:44,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:56:44,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:56:44,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:56:44,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:56:44,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:56:44,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:56:44,826 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:56:44,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:56:44,827 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:56:44,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:56:44,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:56:44,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:56:44,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:56:44,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:56:44,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:56:44,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:56:44,829 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:56:44,829 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:56:44,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:56:44,830 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:56:44,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:56:44,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:56:44,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:56:44,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:56:44,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:56:44,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:56:44,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:56:44,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:56:44,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:56:44,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:56:44,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:56:44,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:56:44,832 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:56:44,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:56:44,833 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:56:44,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:56:45,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:56:45,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:56:45,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:56:45,180 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:56:45,180 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:56:45,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-08-30 15:56:46,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:56:46,469 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:56:46,470 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-08-30 15:56:46,479 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb3be518/c5a4f6fc73f84303885dac35006d2337/FLAGe05e873c7 [2023-08-30 15:56:46,502 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb3be518/c5a4f6fc73f84303885dac35006d2337 [2023-08-30 15:56:46,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:56:46,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:56:46,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:56:46,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:56:46,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:56:46,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a456a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46, skipping insertion in model container [2023-08-30 15:56:46,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:56:46,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:56:46,722 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/test-context1.wvr.c[2433,2446] [2023-08-30 15:56:46,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:56:46,738 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:56:46,759 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/test-context1.wvr.c[2433,2446] [2023-08-30 15:56:46,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:56:46,769 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:56:46,770 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:56:46,775 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:56:46,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46 WrapperNode [2023-08-30 15:56:46,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:56:46,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:56:46,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:56:46,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:56:46,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,813 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 153 [2023-08-30 15:56:46,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:56:46,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:56:46,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:56:46,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:56:46,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:56:46,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:56:46,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:56:46,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:56:46,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (1/1) ... [2023-08-30 15:56:46,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:56:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:46,885 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 15:56:46,904 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 15:56:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:56:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:56:46,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:56:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:56:46,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:56:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:56:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:56:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:56:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:56:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:56:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:56:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:56:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:56:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:56:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:56:46,922 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 15:56:47,004 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:56:47,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:56:47,308 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:56:47,561 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:56:47,562 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 15:56:47,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:56:47 BoogieIcfgContainer [2023-08-30 15:56:47,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:56:47,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:56:47,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:56:47,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:56:47,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:56:46" (1/3) ... [2023-08-30 15:56:47,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417bb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:56:47, skipping insertion in model container [2023-08-30 15:56:47,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:56:46" (2/3) ... [2023-08-30 15:56:47,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417bb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:56:47, skipping insertion in model container [2023-08-30 15:56:47,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:56:47" (3/3) ... [2023-08-30 15:56:47,572 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2023-08-30 15:56:47,580 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:56:47,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:56:47,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 15:56:47,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:56:47,681 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:56:47,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 124 transitions, 264 flow [2023-08-30 15:56:47,798 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2023-08-30 15:56:47,798 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:56:47,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 122 events. 9/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 132 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-30 15:56:47,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 124 transitions, 264 flow [2023-08-30 15:56:47,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 106 transitions, 221 flow [2023-08-30 15:56:47,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:56:47,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 106 transitions, 221 flow [2023-08-30 15:56:47,829 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 106 transitions, 221 flow [2023-08-30 15:56:47,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 221 flow [2023-08-30 15:56:47,867 INFO L130 PetriNetUnfolder]: 8/106 cut-off events. [2023-08-30 15:56:47,867 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:56:47,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 8/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-30 15:56:47,870 INFO L119 LiptonReduction]: Number of co-enabled transitions 904 [2023-08-30 15:56:53,204 INFO L134 LiptonReduction]: Checked pairs total: 1362 [2023-08-30 15:56:53,204 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-30 15:56:53,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:56:53,221 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;@330ea907, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:56:53,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 15:56:53,223 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:56:53,224 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:56:53,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:53,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:56:53,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:53,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash 20531, now seen corresponding path program 1 times [2023-08-30 15:56:53,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:53,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759242143] [2023-08-30 15:56:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:53,495 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 15:56:53,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:53,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759242143] [2023-08-30 15:56:53,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759242143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:53,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:56:53,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:56:53,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540192276] [2023-08-30 15:56:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:53,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:56:53,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:53,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:56:53,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:56:53,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 15:56:53,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 15:56:53,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:53,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 15:56:53,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:53,657 INFO L130 PetriNetUnfolder]: 187/329 cut-off events. [2023-08-30 15:56:53,658 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 15:56:53,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 329 events. 187/329 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1237 event pairs, 138 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 300. Up to 167 conditions per place. [2023-08-30 15:56:53,661 INFO L137 encePairwiseOnDemand]: 242/252 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-30 15:56:53,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 174 flow [2023-08-30 15:56:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-30 15:56:53,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2023-08-30 15:56:53,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-30 15:56:53,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-30 15:56:53,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:53,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-30 15:56:53,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 15:56:53,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:53,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:53,688 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 63 flow. Second operand 3 states and 344 transitions. [2023-08-30 15:56:53,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 174 flow [2023-08-30 15:56:53,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:56:53,693 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 60 flow [2023-08-30 15:56:53,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-08-30 15:56:53,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2023-08-30 15:56:53,698 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 60 flow [2023-08-30 15:56:53,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 15:56:53,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:53,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:56:53,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:56:53,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:53,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 637276, now seen corresponding path program 1 times [2023-08-30 15:56:53,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683942739] [2023-08-30 15:56:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:53,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:53,769 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 15:56:53,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683942739] [2023-08-30 15:56:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683942739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:53,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917297355] [2023-08-30 15:56:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:53,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:53,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:53,773 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 15:56:53,789 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 15:56:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:56:53,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:53,968 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 15:56:53,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:56:53,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917297355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:53,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:56:53,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:56:53,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926974514] [2023-08-30 15:56:53,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:53,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:56:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:56:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:56:53,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 15:56:54,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 15:56:54,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:54,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 15:56:54,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:54,114 INFO L130 PetriNetUnfolder]: 187/328 cut-off events. [2023-08-30 15:56:54,115 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:56:54,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 328 events. 187/328 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1223 event pairs, 138 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 343. Up to 165 conditions per place. [2023-08-30 15:56:54,117 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 36 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-30 15:56:54,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 38 transitions, 170 flow [2023-08-30 15:56:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:56:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:56:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2023-08-30 15:56:54,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2023-08-30 15:56:54,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2023-08-30 15:56:54,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2023-08-30 15:56:54,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:54,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2023-08-30 15:56:54,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 15:56:54,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 15:56:54,126 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 15:56:54,126 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 60 flow. Second operand 4 states and 427 transitions. [2023-08-30 15:56:54,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 38 transitions, 170 flow [2023-08-30 15:56:54,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:56:54,128 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 58 flow [2023-08-30 15:56:54,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-08-30 15:56:54,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2023-08-30 15:56:54,129 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 58 flow [2023-08-30 15:56:54,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 15:56:54,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:54,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:56:54,141 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 15:56:54,336 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 15:56:54,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:54,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:54,337 INFO L85 PathProgramCache]: Analyzing trace with hash 637277, now seen corresponding path program 1 times [2023-08-30 15:56:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:54,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203288699] [2023-08-30 15:56:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:54,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:54,394 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 15:56:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203288699] [2023-08-30 15:56:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203288699] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913653946] [2023-08-30 15:56:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:54,396 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 15:56:54,403 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 15:56:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:54,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:56:54,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:54,488 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 15:56:54,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:56:54,505 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 15:56:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913653946] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:54,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:54,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:56:54,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769057861] [2023-08-30 15:56:54,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:54,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:56:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:56:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:56:54,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 15:56:54,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 15:56:54,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:54,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 15:56:54,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:54,773 INFO L130 PetriNetUnfolder]: 466/817 cut-off events. [2023-08-30 15:56:54,773 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:56:54,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 817 events. 466/817 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3875 event pairs, 345 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 1363. Up to 166 conditions per place. [2023-08-30 15:56:54,780 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 87 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-30 15:56:54,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 92 transitions, 406 flow [2023-08-30 15:56:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:56:54,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:56:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-08-30 15:56:54,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44775132275132273 [2023-08-30 15:56:54,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-08-30 15:56:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-08-30 15:56:54,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:54,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-08-30 15:56:54,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 15:56:54,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 15:56:54,791 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 15:56:54,791 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 58 flow. Second operand 6 states and 677 transitions. [2023-08-30 15:56:54,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 92 transitions, 406 flow [2023-08-30 15:56:54,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 92 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:56:54,794 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 91 flow [2023-08-30 15:56:54,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-30 15:56:54,795 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-30 15:56:54,802 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 91 flow [2023-08-30 15:56:54,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 15:56:54,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:54,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:56:54,809 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 15:56:55,009 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 15:56:55,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:55,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash 19744847, now seen corresponding path program 1 times [2023-08-30 15:56:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367089540] [2023-08-30 15:56:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:55,051 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 15:56:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:55,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367089540] [2023-08-30 15:56:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367089540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:56:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:56:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154063732] [2023-08-30 15:56:55,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:55,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:56:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:56:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:56:55,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 15:56:55,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 15:56:55,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:55,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 15:56:55,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:55,142 INFO L130 PetriNetUnfolder]: 396/697 cut-off events. [2023-08-30 15:56:55,142 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:56:55,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 697 events. 396/697 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3196 event pairs, 285 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 1173. Up to 697 conditions per place. [2023-08-30 15:56:55,146 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-30 15:56:55,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 135 flow [2023-08-30 15:56:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-08-30 15:56:55,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193121693121693 [2023-08-30 15:56:55,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-08-30 15:56:55,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-08-30 15:56:55,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:55,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-08-30 15:56:55,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 15:56:55,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,151 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 91 flow. Second operand 3 states and 317 transitions. [2023-08-30 15:56:55,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 135 flow [2023-08-30 15:56:55,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 127 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:56:55,153 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 83 flow [2023-08-30 15:56:55,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-30 15:56:55,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-30 15:56:55,154 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 83 flow [2023-08-30 15:56:55,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 15:56:55,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:55,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:56:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:56:55,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:55,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 19744844, now seen corresponding path program 1 times [2023-08-30 15:56:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108964749] [2023-08-30 15:56:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:55,201 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 15:56:55,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:55,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108964749] [2023-08-30 15:56:55,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108964749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:55,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:56:55,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:56:55,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650282995] [2023-08-30 15:56:55,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:55,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:56:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:56:55,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:56:55,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 15:56:55,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 15:56:55,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:55,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 15:56:55,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:55,326 INFO L130 PetriNetUnfolder]: 526/967 cut-off events. [2023-08-30 15:56:55,327 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 15:56:55,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 967 events. 526/967 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5237 event pairs, 205 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 2042. Up to 711 conditions per place. [2023-08-30 15:56:55,331 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 28 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2023-08-30 15:56:55,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 172 flow [2023-08-30 15:56:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-30 15:56:55,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2023-08-30 15:56:55,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-30 15:56:55,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-30 15:56:55,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:55,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-30 15:56:55,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 15:56:55,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,336 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 83 flow. Second operand 3 states and 330 transitions. [2023-08-30 15:56:55,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 172 flow [2023-08-30 15:56:55,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:56:55,338 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 100 flow [2023-08-30 15:56:55,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-30 15:56:55,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-30 15:56:55,339 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 100 flow [2023-08-30 15:56:55,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 15:56:55,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:55,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:56:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:56:55,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:55,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash 19744848, now seen corresponding path program 1 times [2023-08-30 15:56:55,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:55,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021438707] [2023-08-30 15:56:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:55,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:55,377 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 15:56:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021438707] [2023-08-30 15:56:55,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021438707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:55,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:56:55,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:56:55,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164192830] [2023-08-30 15:56:55,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:55,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:56:55,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:56:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:56:55,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 15:56:55,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 15:56:55,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:55,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 15:56:55,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:55,542 INFO L130 PetriNetUnfolder]: 676/1177 cut-off events. [2023-08-30 15:56:55,542 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-08-30 15:56:55,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 1177 events. 676/1177 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5998 event pairs, 225 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 2922. Up to 681 conditions per place. [2023-08-30 15:56:55,553 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-30 15:56:55,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 197 flow [2023-08-30 15:56:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 15:56:55,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2023-08-30 15:56:55,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 15:56:55,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 15:56:55,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:55,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 15:56:55,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 15:56:55,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,559 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 100 flow. Second operand 3 states and 328 transitions. [2023-08-30 15:56:55,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 197 flow [2023-08-30 15:56:55,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:56:55,562 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 123 flow [2023-08-30 15:56:55,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 15:56:55,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-30 15:56:55,565 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 123 flow [2023-08-30 15:56:55,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 15:56:55,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:55,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:56:55,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:56:55,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:55,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:55,567 INFO L85 PathProgramCache]: Analyzing trace with hash 19744843, now seen corresponding path program 1 times [2023-08-30 15:56:55,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:55,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107331330] [2023-08-30 15:56:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:55,619 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 15:56:55,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:55,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107331330] [2023-08-30 15:56:55,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107331330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:55,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:56:55,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:56:55,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3397284] [2023-08-30 15:56:55,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:56:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:55,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:56:55,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:56:55,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 252 [2023-08-30 15:56:55,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 15:56:55,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:55,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 252 [2023-08-30 15:56:55,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:55,751 INFO L130 PetriNetUnfolder]: 646/1117 cut-off events. [2023-08-30 15:56:55,752 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2023-08-30 15:56:55,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3198 conditions, 1117 events. 646/1117 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5665 event pairs, 225 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 3182. Up to 981 conditions per place. [2023-08-30 15:56:55,757 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 28 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2023-08-30 15:56:55,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 206 flow [2023-08-30 15:56:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 15:56:55,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2023-08-30 15:56:55,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 15:56:55,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 15:56:55,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:55,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 15:56:55,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 15:56:55,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:55,762 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 123 flow. Second operand 3 states and 328 transitions. [2023-08-30 15:56:55,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 206 flow [2023-08-30 15:56:55,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:56:55,767 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 128 flow [2023-08-30 15:56:55,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-30 15:56:55,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-08-30 15:56:55,768 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 128 flow [2023-08-30 15:56:55,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 15:56:55,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:55,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:56:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:56:55,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:55,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash 612090767, now seen corresponding path program 1 times [2023-08-30 15:56:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207385083] [2023-08-30 15:56:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:55,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:55,837 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 15:56:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:55,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207385083] [2023-08-30 15:56:55,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207385083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:55,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395766035] [2023-08-30 15:56:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:55,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:55,841 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 15:56:55,867 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 15:56:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:55,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:56:55,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:55,976 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 15:56:55,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:56:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395766035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:55,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:56:55,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-30 15:56:55,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337618339] [2023-08-30 15:56:55,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:55,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:56:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:56:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:56:56,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 252 [2023-08-30 15:56:56,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 15:56:56,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:56,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 252 [2023-08-30 15:56:56,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:56,153 INFO L130 PetriNetUnfolder]: 526/921 cut-off events. [2023-08-30 15:56:56,153 INFO L131 PetriNetUnfolder]: For 307/307 co-relation queries the response was YES. [2023-08-30 15:56:56,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 921 events. 526/921 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4419 event pairs, 373 based on Foata normal form. 6/735 useless extension candidates. Maximal degree in co-relation 2632. Up to 895 conditions per place. [2023-08-30 15:56:56,158 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 24 selfloop transitions, 2 changer transitions 9/35 dead transitions. [2023-08-30 15:56:56,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 220 flow [2023-08-30 15:56:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:56:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:56:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-30 15:56:56,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2023-08-30 15:56:56,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-30 15:56:56,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-30 15:56:56,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:56,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-30 15:56:56,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 15:56:56,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 15:56:56,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 15:56:56,165 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 128 flow. Second operand 4 states and 402 transitions. [2023-08-30 15:56:56,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 220 flow [2023-08-30 15:56:56,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:56:56,167 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 134 flow [2023-08-30 15:56:56,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2023-08-30 15:56:56,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-08-30 15:56:56,168 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 134 flow [2023-08-30 15:56:56,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 15:56:56,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:56,169 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:56:56,179 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 15:56:56,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:56,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:56,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1806029428, now seen corresponding path program 2 times [2023-08-30 15:56:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:56,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446694736] [2023-08-30 15:56:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:56,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:56,445 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 15:56:56,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446694736] [2023-08-30 15:56:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446694736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203906384] [2023-08-30 15:56:56,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:56:56,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:56,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:56,448 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 15:56:56,473 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 15:56:56,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:56:56,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:56:56,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:56:56,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:56,545 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 15:56:56,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:56:56,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203906384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:56,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:56:56,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:56:56,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293509749] [2023-08-30 15:56:56,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:56,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:56:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:56:56,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:56:56,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-08-30 15:56:56,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 15:56:56,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:56,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-08-30 15:56:56,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:56,660 INFO L130 PetriNetUnfolder]: 517/894 cut-off events. [2023-08-30 15:56:56,660 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2023-08-30 15:56:56,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 894 events. 517/894 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4243 event pairs, 364 based on Foata normal form. 1/703 useless extension candidates. Maximal degree in co-relation 2575. Up to 894 conditions per place. [2023-08-30 15:56:56,665 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-30 15:56:56,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 174 flow [2023-08-30 15:56:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-08-30 15:56:56,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414021164021164 [2023-08-30 15:56:56,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-08-30 15:56:56,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-08-30 15:56:56,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:56,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-08-30 15:56:56,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 15:56:56,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:56,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:56,671 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 134 flow. Second operand 3 states and 313 transitions. [2023-08-30 15:56:56,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 174 flow [2023-08-30 15:56:56,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 156 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 15:56:56,673 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 108 flow [2023-08-30 15:56:56,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-30 15:56:56,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-30 15:56:56,674 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 108 flow [2023-08-30 15:56:56,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 15:56:56,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:56,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:56:56,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:56:56,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:56,881 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:56,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1805671877, now seen corresponding path program 1 times [2023-08-30 15:56:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:56,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258261164] [2023-08-30 15:56:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:56,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:56,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258261164] [2023-08-30 15:56:56,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258261164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:56,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:56:56,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:56:56,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416537695] [2023-08-30 15:56:56,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:56,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:56:56,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:56:56,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:56:56,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 15:56:56,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 15:56:56,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:56,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 15:56:56,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:57,036 INFO L130 PetriNetUnfolder]: 445/798 cut-off events. [2023-08-30 15:56:57,036 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2023-08-30 15:56:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 798 events. 445/798 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3879 event pairs, 164 based on Foata normal form. 24/670 useless extension candidates. Maximal degree in co-relation 2224. Up to 497 conditions per place. [2023-08-30 15:56:57,050 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 15:56:57,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 183 flow [2023-08-30 15:56:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-08-30 15:56:57,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421957671957672 [2023-08-30 15:56:57,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-08-30 15:56:57,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-08-30 15:56:57,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:57,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-08-30 15:56:57,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 15:56:57,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:57,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:57,057 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 108 flow. Second operand 3 states and 319 transitions. [2023-08-30 15:56:57,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 183 flow [2023-08-30 15:56:57,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:56:57,058 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 109 flow [2023-08-30 15:56:57,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-08-30 15:56:57,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-30 15:56:57,060 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 109 flow [2023-08-30 15:56:57,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 15:56:57,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:57,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:56:57,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:56:57,061 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:57,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1805671878, now seen corresponding path program 1 times [2023-08-30 15:56:57,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861116742] [2023-08-30 15:56:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:57,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861116742] [2023-08-30 15:56:57,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861116742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917446253] [2023-08-30 15:56:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:57,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:57,121 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 15:56:57,146 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 15:56:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:57,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:56:57,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:57,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:56:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:57,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917446253] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:57,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:57,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:56:57,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959312631] [2023-08-30 15:56:57,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:57,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:56:57,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:56:57,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:56:57,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 15:56:57,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 15:56:57,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:57,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 15:56:57,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:57,485 INFO L130 PetriNetUnfolder]: 1261/2246 cut-off events. [2023-08-30 15:56:57,485 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-08-30 15:56:57,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 2246 events. 1261/2246 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13699 event pairs, 252 based on Foata normal form. 40/2014 useless extension candidates. Maximal degree in co-relation 6456. Up to 785 conditions per place. [2023-08-30 15:56:57,498 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 60 selfloop transitions, 10 changer transitions 3/73 dead transitions. [2023-08-30 15:56:57,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 442 flow [2023-08-30 15:56:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:56:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:56:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 668 transitions. [2023-08-30 15:56:57,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2023-08-30 15:56:57,513 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 668 transitions. [2023-08-30 15:56:57,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 668 transitions. [2023-08-30 15:56:57,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:57,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 668 transitions. [2023-08-30 15:56:57,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 15:56:57,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 15:56:57,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 15:56:57,518 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 109 flow. Second operand 6 states and 668 transitions. [2023-08-30 15:56:57,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 442 flow [2023-08-30 15:56:57,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 73 transitions, 420 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 15:56:57,520 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 211 flow [2023-08-30 15:56:57,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-30 15:56:57,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2023-08-30 15:56:57,521 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 211 flow [2023-08-30 15:56:57,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 15:56:57,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:57,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:57,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:56:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 15:56:57,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:57,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:57,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1681860594, now seen corresponding path program 1 times [2023-08-30 15:56:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:57,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304545658] [2023-08-30 15:56:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:57,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:57,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304545658] [2023-08-30 15:56:57,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304545658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:57,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560067181] [2023-08-30 15:56:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:57,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:57,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:57,797 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 15:56:57,820 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 15:56:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:57,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:56:57,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:57,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:56:57,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560067181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:57,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:56:57,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 15:56:57,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519505872] [2023-08-30 15:56:57,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:57,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:56:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:56:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:56:57,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-08-30 15:56:57,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 15:56:57,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:57,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-08-30 15:56:57,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:58,123 INFO L130 PetriNetUnfolder]: 1057/1922 cut-off events. [2023-08-30 15:56:58,123 INFO L131 PetriNetUnfolder]: For 3132/3132 co-relation queries the response was YES. [2023-08-30 15:56:58,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 1922 events. 1057/1922 cut-off events. For 3132/3132 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11449 event pairs, 452 based on Foata normal form. 152/2074 useless extension candidates. Maximal degree in co-relation 6632. Up to 1260 conditions per place. [2023-08-30 15:56:58,134 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-30 15:56:58,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 327 flow [2023-08-30 15:56:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:56:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:56:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-08-30 15:56:58,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146825396825397 [2023-08-30 15:56:58,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-08-30 15:56:58,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-08-30 15:56:58,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:58,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-08-30 15:56:58,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 15:56:58,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 15:56:58,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 15:56:58,141 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 211 flow. Second operand 4 states and 418 transitions. [2023-08-30 15:56:58,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 327 flow [2023-08-30 15:56:58,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:56:58,145 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 220 flow [2023-08-30 15:56:58,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-30 15:56:58,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2023-08-30 15:56:58,147 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 220 flow [2023-08-30 15:56:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 15:56:58,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:58,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:58,156 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 15:56:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:58,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:58,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1693479089, now seen corresponding path program 1 times [2023-08-30 15:56:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:58,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945445710] [2023-08-30 15:56:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:58,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945445710] [2023-08-30 15:56:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945445710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664023103] [2023-08-30 15:56:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:58,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:58,431 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 15:56:58,434 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 15:56:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:58,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:56:58,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:58,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:56:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:58,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664023103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:58,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:58,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 7 [2023-08-30 15:56:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533516149] [2023-08-30 15:56:58,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:58,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 15:56:58,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 15:56:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:56:58,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-08-30 15:56:58,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 220 flow. Second operand has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:58,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:58,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-08-30 15:56:58,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:58,940 INFO L130 PetriNetUnfolder]: 1457/2658 cut-off events. [2023-08-30 15:56:58,940 INFO L131 PetriNetUnfolder]: For 5328/5328 co-relation queries the response was YES. [2023-08-30 15:56:58,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 2658 events. 1457/2658 cut-off events. For 5328/5328 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17024 event pairs, 244 based on Foata normal form. 312/2970 useless extension candidates. Maximal degree in co-relation 9080. Up to 1205 conditions per place. [2023-08-30 15:56:58,955 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 50 selfloop transitions, 16 changer transitions 21/87 dead transitions. [2023-08-30 15:56:58,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 618 flow [2023-08-30 15:56:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:56:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:56:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-08-30 15:56:58,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887125220458554 [2023-08-30 15:56:58,958 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-08-30 15:56:58,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-08-30 15:56:58,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:58,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-08-30 15:56:58,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 15:56:58,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:58,964 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:58,964 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 220 flow. Second operand 9 states and 950 transitions. [2023-08-30 15:56:58,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 618 flow [2023-08-30 15:56:58,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:56:58,969 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 380 flow [2023-08-30 15:56:58,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=380, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-08-30 15:56:58,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2023-08-30 15:56:58,969 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 380 flow [2023-08-30 15:56:58,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:58,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:58,970 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 15:56:58,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:56:59,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:59,176 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:59,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1693866123, now seen corresponding path program 2 times [2023-08-30 15:56:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433169797] [2023-08-30 15:56:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:59,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:56:59,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:59,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433169797] [2023-08-30 15:56:59,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433169797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:59,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946322546] [2023-08-30 15:56:59,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:56:59,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:59,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:59,280 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 15:56:59,300 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 15:56:59,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:56:59,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:56:59,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:56:59,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 15:56:59,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:56:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946322546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:56:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 15:56:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000070609] [2023-08-30 15:56:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:56:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:56:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:56:59,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-08-30 15:56:59,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 15:56:59,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:59,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-08-30 15:56:59,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:59,657 INFO L130 PetriNetUnfolder]: 1233/2250 cut-off events. [2023-08-30 15:56:59,657 INFO L131 PetriNetUnfolder]: For 8620/8620 co-relation queries the response was YES. [2023-08-30 15:56:59,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 2250 events. 1233/2250 cut-off events. For 8620/8620 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13918 event pairs, 920 based on Foata normal form. 152/2402 useless extension candidates. Maximal degree in co-relation 8552. Up to 2250 conditions per place. [2023-08-30 15:56:59,671 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 15:56:59,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 434 flow [2023-08-30 15:56:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:56:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:56:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-30 15:56:59,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2023-08-30 15:56:59,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-30 15:56:59,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-30 15:56:59,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:59,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-30 15:56:59,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 15:56:59,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:59,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 15:56:59,676 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 380 flow. Second operand 3 states and 314 transitions. [2023-08-30 15:56:59,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 434 flow [2023-08-30 15:56:59,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 381 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-30 15:56:59,686 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 303 flow [2023-08-30 15:56:59,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-30 15:56:59,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2023-08-30 15:56:59,687 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 303 flow [2023-08-30 15:56:59,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 15:56:59,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:59,688 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:59,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 15:56:59,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 15:56:59,895 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:56:59,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash 442568441, now seen corresponding path program 2 times [2023-08-30 15:56:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835871817] [2023-08-30 15:56:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:56:59,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835871817] [2023-08-30 15:56:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835871817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979440321] [2023-08-30 15:56:59,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:56:59,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:59,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:59,993 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:57:00,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:57:00,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:57:00,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:57:00,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 15:57:00,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:57:00,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:57:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979440321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:00,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:00,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 15:57:00,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094108787] [2023-08-30 15:57:00,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:00,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:57:00,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:00,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:57:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:57:00,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 252 [2023-08-30 15:57:00,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 303 flow. Second operand has 14 states, 14 states have (on average 90.78571428571429) internal successors, (1271), 14 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 15:57:00,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:00,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 252 [2023-08-30 15:57:00,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:00,701 INFO L130 PetriNetUnfolder]: 960/1769 cut-off events. [2023-08-30 15:57:00,701 INFO L131 PetriNetUnfolder]: For 4104/4104 co-relation queries the response was YES. [2023-08-30 15:57:00,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1769 events. 960/1769 cut-off events. For 4104/4104 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10365 event pairs, 699 based on Foata normal form. 10/1779 useless extension candidates. Maximal degree in co-relation 6168. Up to 1688 conditions per place. [2023-08-30 15:57:00,710 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 37 selfloop transitions, 3 changer transitions 23/63 dead transitions. [2023-08-30 15:57:00,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 502 flow [2023-08-30 15:57:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:57:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:57:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 665 transitions. [2023-08-30 15:57:00,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2023-08-30 15:57:00,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 665 transitions. [2023-08-30 15:57:00,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 665 transitions. [2023-08-30 15:57:00,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:00,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 665 transitions. [2023-08-30 15:57:00,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 15:57:00,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:00,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:00,718 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 303 flow. Second operand 7 states and 665 transitions. [2023-08-30 15:57:00,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 502 flow [2023-08-30 15:57:00,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:57:00,725 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 320 flow [2023-08-30 15:57:00,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-08-30 15:57:00,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2023-08-30 15:57:00,726 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 320 flow [2023-08-30 15:57:00,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 90.78571428571429) internal successors, (1271), 14 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 15:57:00,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:00,727 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:00,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:57:00,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:57:00,933 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 15:57:00,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1403053040, now seen corresponding path program 3 times [2023-08-30 15:57:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:00,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234501205] [2023-08-30 15:57:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:57:01,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234501205] [2023-08-30 15:57:01,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234501205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113702802] [2023-08-30 15:57:01,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:57:01,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:01,105 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:57:01,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:57:01,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 15:57:01,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:57:01,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:57:01,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:57:01,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:57:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113702802] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:01,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-08-30 15:57:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870772279] [2023-08-30 15:57:01,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:01,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 15:57:01,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 15:57:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-30 15:57:01,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 252 [2023-08-30 15:57:01,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 320 flow. Second operand has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 15:57:01,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:01,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 252 [2023-08-30 15:57:01,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:01,676 INFO L130 PetriNetUnfolder]: 722/1346 cut-off events. [2023-08-30 15:57:01,676 INFO L131 PetriNetUnfolder]: For 3507/3507 co-relation queries the response was YES. [2023-08-30 15:57:01,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 1346 events. 722/1346 cut-off events. For 3507/3507 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7674 event pairs, 457 based on Foata normal form. 92/1438 useless extension candidates. Maximal degree in co-relation 4490. Up to 1203 conditions per place. [2023-08-30 15:57:01,681 INFO L137 encePairwiseOnDemand]: 245/252 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-08-30 15:57:01,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 570 flow [2023-08-30 15:57:01,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:57:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:57:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 943 transitions. [2023-08-30 15:57:01,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742063492063492 [2023-08-30 15:57:01,700 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 943 transitions. [2023-08-30 15:57:01,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 943 transitions. [2023-08-30 15:57:01,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:01,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 943 transitions. [2023-08-30 15:57:01,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 0 states have call successors, (0), 0 states 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 15:57:01,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states 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 15:57:01,707 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states 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 15:57:01,707 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 320 flow. Second operand 10 states and 943 transitions. [2023-08-30 15:57:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 570 flow [2023-08-30 15:57:01,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 528 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-08-30 15:57:01,713 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-30 15:57:01,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-30 15:57:01,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2023-08-30 15:57:01,715 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-30 15:57:01,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 15:57:01,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-08-30 15:57:01,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-30 15:57:01,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-30 15:57:01,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-30 15:57:01,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-30 15:57:01,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-30 15:57:01,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-30 15:57:01,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-08-30 15:57:01,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-08-30 15:57:01,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-30 15:57:01,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-08-30 15:57:01,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-30 15:57:01,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-08-30 15:57:01,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-08-30 15:57:01,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2023-08-30 15:57:01,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2023-08-30 15:57:01,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-30 15:57:01,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-30 15:57:01,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-08-30 15:57:01,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-08-30 15:57:01,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-30 15:57:01,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-30 15:57:01,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-30 15:57:01,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-08-30 15:57:01,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-30 15:57:01,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-30 15:57:01,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-08-30 15:57:01,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-30 15:57:01,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:57:01,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 15:57:01,929 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:01,932 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:57:01,932 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:57:01,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:57:01 BasicIcfg [2023-08-30 15:57:01,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:57:01,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:57:01,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:57:01,935 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:57:01,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:56:47" (3/4) ... [2023-08-30 15:57:01,937 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:57:01,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:57:01,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:57:01,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 15:57:01,946 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:57:01,946 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:57:01,946 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:57:01,983 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:57:01,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:57:01,984 INFO L158 Benchmark]: Toolchain (without parser) took 15478.07ms. Allocated memory was 71.3MB in the beginning and 237.0MB in the end (delta: 165.7MB). Free memory was 40.2MB in the beginning and 189.6MB in the end (delta: -149.4MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2023-08-30 15:57:01,984 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:57:01,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.76ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 44.4MB in the end (delta: -4.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-08-30 15:57:01,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.72ms. Allocated memory is still 71.3MB. Free memory was 44.4MB in the beginning and 42.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:57:01,985 INFO L158 Benchmark]: Boogie Preprocessor took 44.80ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:57:01,985 INFO L158 Benchmark]: RCFGBuilder took 703.90ms. Allocated memory is still 71.3MB. Free memory was 40.8MB in the beginning and 37.6MB in the end (delta: 3.2MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-08-30 15:57:01,985 INFO L158 Benchmark]: TraceAbstraction took 14368.24ms. Allocated memory was 71.3MB in the beginning and 237.0MB in the end (delta: 165.7MB). Free memory was 36.9MB in the beginning and 193.4MB in the end (delta: -156.5MB). Peak memory consumption was 142.1MB. Max. memory is 16.1GB. [2023-08-30 15:57:01,986 INFO L158 Benchmark]: Witness Printer took 48.34ms. Allocated memory is still 237.0MB. Free memory was 193.4MB in the beginning and 189.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 15:57:01,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.76ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 44.4MB in the end (delta: -4.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.72ms. Allocated memory is still 71.3MB. Free memory was 44.4MB in the beginning and 42.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.80ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 703.90ms. Allocated memory is still 71.3MB. Free memory was 40.8MB in the beginning and 37.6MB in the end (delta: 3.2MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14368.24ms. Allocated memory was 71.3MB in the beginning and 237.0MB in the end (delta: 165.7MB). Free memory was 36.9MB in the beginning and 193.4MB in the end (delta: -156.5MB). Peak memory consumption was 142.1MB. Max. memory is 16.1GB. * Witness Printer took 48.34ms. Allocated memory is still 237.0MB. Free memory was 193.4MB in the beginning and 189.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 105 PlacesBefore, 31 PlacesAfterwards, 106 TransitionsBefore, 27 TransitionsAfterwards, 904 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 128 TotalNumberOfCompositions, 1362 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1334, independent: 1326, independent conditional: 0, independent unconditional: 1326, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1334, independent: 865, independent conditional: 0, independent unconditional: 865, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 146 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1020 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 870 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1494 IncrementalHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 36 mSDtfsCounter, 1494 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=13, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 170 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 872 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1345 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 31 InterpolantComputations, 11 PerfectInterpolantSequences, 74/115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:57:02,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE