./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:01:59,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:01:59,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:01:59,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:01:59,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:01:59,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:01:59,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:01:59,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:01:59,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:01:59,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:01:59,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:01:59,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:01:59,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:01:59,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:01:59,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:01:59,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:01:59,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:01:59,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:01:59,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:01:59,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:01:59,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:01:59,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:01:59,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:01:59,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:01:59,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:01:59,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:01:59,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:01:59,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:01:59,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:01:59,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:01:59,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:01:59,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:01:59,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:01:59,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:01:59,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:01:59,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:01:59,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:01:59,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:01:59,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:01:59,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:01:59,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:01:59,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:01:59,788 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:01:59,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:01:59,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:01:59,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:01:59,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:01:59,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:01:59,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:01:59,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:01:59,791 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:01:59,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:01:59,792 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:01:59,793 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:01:59,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:01:59,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:01:59,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:01:59,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:01:59,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:01:59,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:01:59,794 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:01:59,794 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:01:59,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:01:59,795 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:01:59,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:01:59,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:01:59,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:01:59,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:01:59,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:01:59,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:01:59,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:01:59,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:01:59,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:01:59,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:01:59,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:01:59,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:01:59,797 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:01:59,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:01:59,798 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:01:59,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:02:00,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:02:00,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:02:00,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:02:00,127 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:02:00,127 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:02:00,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-08-30 12:02:01,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:02:01,597 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:02:01,598 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-08-30 12:02:01,606 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51bcbfa3/d8ca25d27720429dad7d6dd9fb3a3601/FLAGe953a709c [2023-08-30 12:02:01,629 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51bcbfa3/d8ca25d27720429dad7d6dd9fb3a3601 [2023-08-30 12:02:01,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:02:01,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:02:01,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:02:01,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:02:01,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:02:01,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9bcd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01, skipping insertion in model container [2023-08-30 12:02:01,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:02:01,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:02:01,823 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-08-30 12:02:01,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:02:01,838 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:02:01,857 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-08-30 12:02:01,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:02:01,868 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:02:01,868 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:02:01,874 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:02:01,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01 WrapperNode [2023-08-30 12:02:01,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:02:01,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:02:01,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:02:01,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:02:01,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,908 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 128 [2023-08-30 12:02:01,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:02:01,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:02:01,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:02:01,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:02:01,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:02:01,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:02:01,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:02:01,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:02:01,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (1/1) ... [2023-08-30 12:02:01,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:02:01,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:01,976 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 12:02:01,978 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 12:02:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:02:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:02:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:02:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:02:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:02:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:02:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:02:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:02:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 12:02:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 12:02:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:02:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:02:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:02:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 12:02:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:02:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:02:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:02:02,027 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 12:02:02,126 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:02:02,128 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:02:02,490 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:02:02,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:02:02,518 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 12:02:02,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:02 BoogieIcfgContainer [2023-08-30 12:02:02,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:02:02,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:02:02,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:02:02,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:02:02,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:02:01" (1/3) ... [2023-08-30 12:02:02,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7051ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:02:02, skipping insertion in model container [2023-08-30 12:02:02,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:01" (2/3) ... [2023-08-30 12:02:02,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7051ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:02:02, skipping insertion in model container [2023-08-30 12:02:02,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:02" (3/3) ... [2023-08-30 12:02:02,528 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-08-30 12:02:02,536 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:02:02,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:02:02,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 12:02:02,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:02:02,620 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 12:02:02,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 192 transitions, 408 flow [2023-08-30 12:02:02,787 INFO L130 PetriNetUnfolder]: 16/189 cut-off events. [2023-08-30 12:02:02,792 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:02:02,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 189 events. 16/189 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 148. Up to 3 conditions per place. [2023-08-30 12:02:02,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 192 transitions, 408 flow [2023-08-30 12:02:02,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 357 flow [2023-08-30 12:02:02,812 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:02:02,834 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 357 flow [2023-08-30 12:02:02,842 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 357 flow [2023-08-30 12:02:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 357 flow [2023-08-30 12:02:02,890 INFO L130 PetriNetUnfolder]: 15/171 cut-off events. [2023-08-30 12:02:02,890 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:02:02,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 171 events. 15/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 148. Up to 3 conditions per place. [2023-08-30 12:02:02,895 INFO L119 LiptonReduction]: Number of co-enabled transitions 2680 [2023-08-30 12:02:08,248 INFO L134 LiptonReduction]: Checked pairs total: 4485 [2023-08-30 12:02:08,248 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-30 12:02:08,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:02:08,268 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;@ff46f56, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:02:08,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-30 12:02:08,271 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 12:02:08,271 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:02:08,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:08,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:02:08,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:08,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:08,277 INFO L85 PathProgramCache]: Analyzing trace with hash 22949, now seen corresponding path program 1 times [2023-08-30 12:02:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918108578] [2023-08-30 12:02:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:08,545 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 12:02:08,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918108578] [2023-08-30 12:02:08,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918108578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:08,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:08,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:02:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158758725] [2023-08-30 12:02:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:08,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:08,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 12:02:08,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 12:02:08,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:08,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 12:02:08,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:09,075 INFO L130 PetriNetUnfolder]: 3269/4307 cut-off events. [2023-08-30 12:02:09,076 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-08-30 12:02:09,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8805 conditions, 4307 events. 3269/4307 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 19344 event pairs, 1766 based on Foata normal form. 0/1862 useless extension candidates. Maximal degree in co-relation 3753. Up to 2136 conditions per place. [2023-08-30 12:02:09,107 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 59 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-30 12:02:09,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 288 flow [2023-08-30 12:02:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-08-30 12:02:09,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187214611872146 [2023-08-30 12:02:09,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-08-30 12:02:09,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-08-30 12:02:09,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:09,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-08-30 12:02:09,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 12:02:09,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:09,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:09,148 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 89 flow. Second operand 3 states and 568 transitions. [2023-08-30 12:02:09,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 288 flow [2023-08-30 12:02:09,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 12:02:09,163 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 116 flow [2023-08-30 12:02:09,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-30 12:02:09,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-30 12:02:09,172 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 116 flow [2023-08-30 12:02:09,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 12:02:09,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:09,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:02:09,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:02:09,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:09,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:09,183 INFO L85 PathProgramCache]: Analyzing trace with hash 712668, now seen corresponding path program 1 times [2023-08-30 12:02:09,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:09,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424625655] [2023-08-30 12:02:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:09,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:09,333 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 12:02:09,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424625655] [2023-08-30 12:02:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424625655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356431241] [2023-08-30 12:02:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:09,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:09,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:09,338 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 12:02:09,372 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 12:02:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:02:09,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:09,506 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 12:02:09,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:09,535 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 12:02:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356431241] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:09,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:09,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 12:02:09,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933808916] [2023-08-30 12:02:09,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:09,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:02:09,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:02:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:02:09,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 12:02:09,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 12:02:09,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:09,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 12:02:09,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:10,695 INFO L130 PetriNetUnfolder]: 8177/10766 cut-off events. [2023-08-30 12:02:10,696 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 12:02:10,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21794 conditions, 10766 events. 8177/10766 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54774 event pairs, 4415 based on Foata normal form. 0/4686 useless extension candidates. Maximal degree in co-relation 17391. Up to 2134 conditions per place. [2023-08-30 12:02:10,766 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 135 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2023-08-30 12:02:10,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 159 transitions, 726 flow [2023-08-30 12:02:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:02:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:02:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1331 transitions. [2023-08-30 12:02:10,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209393346379648 [2023-08-30 12:02:10,770 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1331 transitions. [2023-08-30 12:02:10,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1331 transitions. [2023-08-30 12:02:10,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:10,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1331 transitions. [2023-08-30 12:02:10,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.14285714285714) internal successors, (1331), 7 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states 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 12:02:10,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 12:02:10,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 12:02:10,780 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 116 flow. Second operand 7 states and 1331 transitions. [2023-08-30 12:02:10,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 159 transitions, 726 flow [2023-08-30 12:02:10,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 159 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:02:10,785 INFO L231 Difference]: Finished difference. Result has 47 places, 55 transitions, 247 flow [2023-08-30 12:02:10,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=47, PETRI_TRANSITIONS=55} [2023-08-30 12:02:10,786 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 12:02:10,787 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 55 transitions, 247 flow [2023-08-30 12:02:10,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 12:02:10,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:10,789 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 12:02:10,797 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 12:02:10,995 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 12:02:10,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:10,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash 22093956, now seen corresponding path program 1 times [2023-08-30 12:02:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:10,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897190127] [2023-08-30 12:02:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897190127] [2023-08-30 12:02:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897190127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:11,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:02:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140633708] [2023-08-30 12:02:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:11,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 12:02:11,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 55 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 12:02:11,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:11,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 12:02:11,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:11,859 INFO L130 PetriNetUnfolder]: 8171/10758 cut-off events. [2023-08-30 12:02:11,859 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-30 12:02:11,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21796 conditions, 10758 events. 8171/10758 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54582 event pairs, 4415 based on Foata normal form. 2/4628 useless extension candidates. Maximal degree in co-relation 13058. Up to 10653 conditions per place. [2023-08-30 12:02:11,926 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 43 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 12:02:11,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 281 flow [2023-08-30 12:02:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-30 12:02:11,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885844748858447 [2023-08-30 12:02:11,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-30 12:02:11,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-30 12:02:11,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:11,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-30 12:02:11,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 12:02:11,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:11,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:11,935 INFO L175 Difference]: Start difference. First operand has 47 places, 55 transitions, 247 flow. Second operand 3 states and 535 transitions. [2023-08-30 12:02:11,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 281 flow [2023-08-30 12:02:11,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 262 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:11,937 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 176 flow [2023-08-30 12:02:11,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-08-30 12:02:11,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-30 12:02:11,938 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 176 flow [2023-08-30 12:02:11,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 12:02:11,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:11,939 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 12:02:11,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:02:11,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:11,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash -242503835, now seen corresponding path program 2 times [2023-08-30 12:02:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:11,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204349122] [2023-08-30 12:02:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:11,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:12,038 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 12:02:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204349122] [2023-08-30 12:02:12,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204349122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818768764] [2023-08-30 12:02:12,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:02:12,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:12,041 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 12:02:12,096 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 12:02:12,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:02:12,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:02:12,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:02:12,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:12,169 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 12:02:12,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:02:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818768764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:12,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:02:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 12:02:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977310598] [2023-08-30 12:02:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:12,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:02:12,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-08-30 12:02:12,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 12:02:12,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:12,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-08-30 12:02:12,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:12,862 INFO L130 PetriNetUnfolder]: 8171/10757 cut-off events. [2023-08-30 12:02:12,862 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 12:02:12,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21781 conditions, 10757 events. 8171/10757 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54656 event pairs, 4415 based on Foata normal form. 1/4627 useless extension candidates. Maximal degree in co-relation 21769. Up to 10647 conditions per place. [2023-08-30 12:02:12,937 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 37 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-08-30 12:02:12,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 252 flow [2023-08-30 12:02:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-08-30 12:02:12,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922374429223744 [2023-08-30 12:02:12,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-08-30 12:02:12,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-08-30 12:02:12,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:12,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-08-30 12:02:12,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 12:02:12,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:12,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:12,944 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 176 flow. Second operand 3 states and 539 transitions. [2023-08-30 12:02:12,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 252 flow [2023-08-30 12:02:12,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:12,946 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 177 flow [2023-08-30 12:02:12,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-08-30 12:02:12,947 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-30 12:02:12,947 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 177 flow [2023-08-30 12:02:12,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 12:02:12,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:12,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:02:12,954 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 12:02:13,154 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,SelfDestructingSolverStorable3 [2023-08-30 12:02:13,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:13,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash -235431933, now seen corresponding path program 1 times [2023-08-30 12:02:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:13,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858105324] [2023-08-30 12:02:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:13,222 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 12:02:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:13,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858105324] [2023-08-30 12:02:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858105324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:13,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:13,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:02:13,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048722905] [2023-08-30 12:02:13,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:13,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:13,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 12:02:13,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 12:02:13,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:13,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 12:02:13,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:14,354 INFO L130 PetriNetUnfolder]: 10601/14467 cut-off events. [2023-08-30 12:02:14,354 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2023-08-30 12:02:14,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29357 conditions, 14467 events. 10601/14467 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 80650 event pairs, 4270 based on Foata normal form. 0/7152 useless extension candidates. Maximal degree in co-relation 29344. Up to 9513 conditions per place. [2023-08-30 12:02:14,507 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 64 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 12:02:14,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 358 flow [2023-08-30 12:02:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-08-30 12:02:14,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196347031963471 [2023-08-30 12:02:14,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-08-30 12:02:14,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-08-30 12:02:14,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:14,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-08-30 12:02:14,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 12:02:14,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:14,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:14,518 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 177 flow. Second operand 3 states and 569 transitions. [2023-08-30 12:02:14,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 358 flow [2023-08-30 12:02:14,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:02:14,520 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 179 flow [2023-08-30 12:02:14,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2023-08-30 12:02:14,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 12:02:14,523 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 179 flow [2023-08-30 12:02:14,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 12:02:14,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:14,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:14,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:02:14,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:14,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1291545728, now seen corresponding path program 1 times [2023-08-30 12:02:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911459745] [2023-08-30 12:02:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:14,591 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 12:02:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911459745] [2023-08-30 12:02:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911459745] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442109910] [2023-08-30 12:02:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:14,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:14,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:14,594 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 12:02:14,596 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 12:02:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:14,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:02:14,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:14,714 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 12:02:14,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:02:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442109910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:02:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 12:02:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000345165] [2023-08-30 12:02:14,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:14,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:02:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:02:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:02:14,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-08-30 12:02:14,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 12:02:14,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:14,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-08-30 12:02:14,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:15,979 INFO L130 PetriNetUnfolder]: 12680/17496 cut-off events. [2023-08-30 12:02:15,979 INFO L131 PetriNetUnfolder]: For 3010/3010 co-relation queries the response was YES. [2023-08-30 12:02:16,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 17496 events. 12680/17496 cut-off events. For 3010/3010 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 103097 event pairs, 5850 based on Foata normal form. 430/10368 useless extension candidates. Maximal degree in co-relation 37858. Up to 11300 conditions per place. [2023-08-30 12:02:16,096 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 120 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2023-08-30 12:02:16,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 134 transitions, 668 flow [2023-08-30 12:02:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:02:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:02:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1241 transitions. [2023-08-30 12:02:16,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-08-30 12:02:16,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1241 transitions. [2023-08-30 12:02:16,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1241 transitions. [2023-08-30 12:02:16,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:16,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1241 transitions. [2023-08-30 12:02:16,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 12:02:16,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 12:02:16,109 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 12:02:16,110 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 179 flow. Second operand 7 states and 1241 transitions. [2023-08-30 12:02:16,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 134 transitions, 668 flow [2023-08-30 12:02:16,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 134 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:16,118 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 236 flow [2023-08-30 12:02:16,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-30 12:02:16,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-30 12:02:16,121 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 236 flow [2023-08-30 12:02:16,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 12:02:16,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:16,122 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 12:02:16,130 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 12:02:16,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:16,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:16,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:16,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1299441574, now seen corresponding path program 1 times [2023-08-30 12:02:16,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:16,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654230480] [2023-08-30 12:02:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:16,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:02:16,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:16,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654230480] [2023-08-30 12:02:16,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654230480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:16,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:02:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328212800] [2023-08-30 12:02:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:16,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:02:16,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:16,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:02:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:02:16,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 365 [2023-08-30 12:02:16,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 12:02:16,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:16,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 365 [2023-08-30 12:02:16,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:17,252 INFO L130 PetriNetUnfolder]: 7971/10985 cut-off events. [2023-08-30 12:02:17,252 INFO L131 PetriNetUnfolder]: For 2542/3028 co-relation queries the response was YES. [2023-08-30 12:02:17,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24254 conditions, 10985 events. 7971/10985 cut-off events. For 2542/3028 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 61206 event pairs, 5115 based on Foata normal form. 487/6546 useless extension candidates. Maximal degree in co-relation 24237. Up to 10028 conditions per place. [2023-08-30 12:02:17,297 INFO L137 encePairwiseOnDemand]: 360/365 looper letters, 59 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-08-30 12:02:17,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 411 flow [2023-08-30 12:02:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:02:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:02:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-30 12:02:17,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815068493150685 [2023-08-30 12:02:17,302 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-30 12:02:17,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-30 12:02:17,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:17,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-30 12:02:17,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states 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 12:02:17,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states 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 12:02:17,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states 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 12:02:17,312 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 236 flow. Second operand 4 states and 703 transitions. [2023-08-30 12:02:17,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 411 flow [2023-08-30 12:02:17,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 400 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:02:17,317 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 228 flow [2023-08-30 12:02:17,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-30 12:02:17,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-08-30 12:02:17,318 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 228 flow [2023-08-30 12:02:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 12:02:17,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:17,318 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 12:02:17,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:02:17,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:17,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash -890786865, now seen corresponding path program 1 times [2023-08-30 12:02:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198753438] [2023-08-30 12:02:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:17,449 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 12:02:17,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:17,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198753438] [2023-08-30 12:02:17,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198753438] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025759028] [2023-08-30 12:02:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:17,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:17,455 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 12:02:17,459 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 12:02:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:17,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 12:02:17,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:02:17,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:02:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025759028] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:17,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:17,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 12:02:17,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215459090] [2023-08-30 12:02:17,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:02:17,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:02:17,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:02:18,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 365 [2023-08-30 12:02:18,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 228 flow. Second operand has 14 states, 14 states have (on average 160.28571428571428) internal successors, (2244), 14 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states 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 12:02:18,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:18,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 365 [2023-08-30 12:02:18,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:19,130 INFO L130 PetriNetUnfolder]: 9336/12866 cut-off events. [2023-08-30 12:02:19,130 INFO L131 PetriNetUnfolder]: For 1852/2419 co-relation queries the response was YES. [2023-08-30 12:02:19,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27984 conditions, 12866 events. 9336/12866 cut-off events. For 1852/2419 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 72515 event pairs, 5962 based on Foata normal form. 568/7772 useless extension candidates. Maximal degree in co-relation 27967. Up to 7512 conditions per place. [2023-08-30 12:02:19,180 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 106 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2023-08-30 12:02:19,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 679 flow [2023-08-30 12:02:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 12:02:19,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 12:02:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1706 transitions. [2023-08-30 12:02:19,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673972602739726 [2023-08-30 12:02:19,186 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1706 transitions. [2023-08-30 12:02:19,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1706 transitions. [2023-08-30 12:02:19,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:19,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1706 transitions. [2023-08-30 12:02:19,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 170.6) internal successors, (1706), 10 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states 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 12:02:19,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 365.0) internal successors, (4015), 11 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states 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 12:02:19,197 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 365.0) internal successors, (4015), 11 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states 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 12:02:19,197 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 228 flow. Second operand 10 states and 1706 transitions. [2023-08-30 12:02:19,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 679 flow [2023-08-30 12:02:19,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 126 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:02:19,200 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 290 flow [2023-08-30 12:02:19,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 12:02:19,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 12:02:19,201 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 290 flow [2023-08-30 12:02:19,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 160.28571428571428) internal successors, (2244), 14 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states 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 12:02:19,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:19,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:19,210 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 12:02:19,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:19,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:19,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 105030115, now seen corresponding path program 1 times [2023-08-30 12:02:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:19,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733965603] [2023-08-30 12:02:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:19,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:19,453 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 12:02:19,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:19,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733965603] [2023-08-30 12:02:19,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733965603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:19,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:19,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:02:19,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295592446] [2023-08-30 12:02:19,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:19,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:19,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:19,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 12:02:19,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 12:02:19,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:19,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 12:02:19,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:20,678 INFO L130 PetriNetUnfolder]: 13854/19172 cut-off events. [2023-08-30 12:02:20,678 INFO L131 PetriNetUnfolder]: For 5368/6735 co-relation queries the response was YES. [2023-08-30 12:02:20,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42641 conditions, 19172 events. 13854/19172 cut-off events. For 5368/6735 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 112902 event pairs, 5628 based on Foata normal form. 1367/13099 useless extension candidates. Maximal degree in co-relation 42620. Up to 12611 conditions per place. [2023-08-30 12:02:20,796 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 69 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 12:02:20,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 492 flow [2023-08-30 12:02:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-30 12:02:20,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178082191780822 [2023-08-30 12:02:20,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-30 12:02:20,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-30 12:02:20,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:20,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-30 12:02:20,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 12:02:20,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:20,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:20,805 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 290 flow. Second operand 3 states and 567 transitions. [2023-08-30 12:02:20,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 492 flow [2023-08-30 12:02:20,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 461 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 12:02:20,816 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 273 flow [2023-08-30 12:02:20,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-30 12:02:20,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 12:02:20,817 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 273 flow [2023-08-30 12:02:20,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 12:02:20,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:20,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:20,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:02:20,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:20,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1852484239, now seen corresponding path program 1 times [2023-08-30 12:02:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:20,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106072898] [2023-08-30 12:02:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:02:20,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:20,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106072898] [2023-08-30 12:02:20,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106072898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:20,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:20,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:02:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337698802] [2023-08-30 12:02:20,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:20,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:20,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:20,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 12:02:20,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 12:02:20,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:20,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 12:02:20,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:22,156 INFO L130 PetriNetUnfolder]: 12826/17706 cut-off events. [2023-08-30 12:02:22,156 INFO L131 PetriNetUnfolder]: For 3885/3885 co-relation queries the response was YES. [2023-08-30 12:02:22,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42902 conditions, 17706 events. 12826/17706 cut-off events. For 3885/3885 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 107476 event pairs, 807 based on Foata normal form. 0/11182 useless extension candidates. Maximal degree in co-relation 42881. Up to 15808 conditions per place. [2023-08-30 12:02:22,234 INFO L137 encePairwiseOnDemand]: 363/365 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 12:02:22,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 451 flow [2023-08-30 12:02:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-30 12:02:22,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123287671232877 [2023-08-30 12:02:22,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-30 12:02:22,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-30 12:02:22,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:22,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-30 12:02:22,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 12:02:22,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:22,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:22,240 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 273 flow. Second operand 3 states and 561 transitions. [2023-08-30 12:02:22,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 451 flow [2023-08-30 12:02:22,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:22,253 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 271 flow [2023-08-30 12:02:22,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 12:02:22,253 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 12:02:22,254 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 271 flow [2023-08-30 12:02:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 12:02:22,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:22,254 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 12:02:22,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:02:22,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:22,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:22,255 INFO L85 PathProgramCache]: Analyzing trace with hash -68391738, now seen corresponding path program 2 times [2023-08-30 12:02:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:22,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233468809] [2023-08-30 12:02:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:22,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:02:22,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233468809] [2023-08-30 12:02:22,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233468809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320057102] [2023-08-30 12:02:22,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:02:22,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:22,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:22,373 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 12:02:22,376 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 12:02:22,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:02:22,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:02:22,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:02:22,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 12:02:22,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:02:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320057102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:22,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:02:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 12:02:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649047356] [2023-08-30 12:02:22,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:22,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:02:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:02:22,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:02:22,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 12:02:22,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 12:02:22,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:22,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 12:02:22,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:23,367 INFO L130 PetriNetUnfolder]: 9691/13566 cut-off events. [2023-08-30 12:02:23,367 INFO L131 PetriNetUnfolder]: For 5312/6514 co-relation queries the response was YES. [2023-08-30 12:02:23,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30945 conditions, 13566 events. 9691/13566 cut-off events. For 5312/6514 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 80041 event pairs, 6534 based on Foata normal form. 1536/10032 useless extension candidates. Maximal degree in co-relation 30924. Up to 13472 conditions per place. [2023-08-30 12:02:23,434 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 46 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 12:02:23,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 346 flow [2023-08-30 12:02:23,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-30 12:02:23,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849315068493151 [2023-08-30 12:02:23,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-30 12:02:23,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-30 12:02:23,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:23,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-30 12:02:23,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 12:02:23,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:23,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:23,441 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 271 flow. Second operand 3 states and 531 transitions. [2023-08-30 12:02:23,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 346 flow [2023-08-30 12:02:23,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 320 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 12:02:23,443 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 228 flow [2023-08-30 12:02:23,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-30 12:02:23,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-30 12:02:23,444 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 228 flow [2023-08-30 12:02:23,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 12:02:23,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:23,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:23,456 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 12:02:23,651 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 12:02:23,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:23,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1973026507, now seen corresponding path program 1 times [2023-08-30 12:02:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:23,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876360034] [2023-08-30 12:02:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:23,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:23,713 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 12:02:23,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876360034] [2023-08-30 12:02:23,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876360034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:23,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:23,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:02:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399292668] [2023-08-30 12:02:23,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:23,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:23,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 12:02:23,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 12:02:23,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:23,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 12:02:23,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:24,908 INFO L130 PetriNetUnfolder]: 13226/18817 cut-off events. [2023-08-30 12:02:24,908 INFO L131 PetriNetUnfolder]: For 5192/6314 co-relation queries the response was YES. [2023-08-30 12:02:24,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43077 conditions, 18817 events. 13226/18817 cut-off events. For 5192/6314 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 117496 event pairs, 6714 based on Foata normal form. 1122/13923 useless extension candidates. Maximal degree in co-relation 43060. Up to 12722 conditions per place. [2023-08-30 12:02:25,055 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 64 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 12:02:25,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 412 flow [2023-08-30 12:02:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-30 12:02:25,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-08-30 12:02:25,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-30 12:02:25,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-30 12:02:25,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:25,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-30 12:02:25,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 12:02:25,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:25,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:25,061 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 228 flow. Second operand 3 states and 560 transitions. [2023-08-30 12:02:25,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 412 flow [2023-08-30 12:02:25,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:25,065 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 241 flow [2023-08-30 12:02:25,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-30 12:02:25,066 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-08-30 12:02:25,066 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 241 flow [2023-08-30 12:02:25,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 12:02:25,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:25,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:25,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:02:25,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:25,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2145229933, now seen corresponding path program 1 times [2023-08-30 12:02:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233945663] [2023-08-30 12:02:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:25,177 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 12:02:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233945663] [2023-08-30 12:02:25,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233945663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:02:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476551427] [2023-08-30 12:02:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:25,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:02:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:02:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:02:25,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-08-30 12:02:25,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 12:02:25,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:25,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-08-30 12:02:25,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:26,580 INFO L130 PetriNetUnfolder]: 14947/20788 cut-off events. [2023-08-30 12:02:26,580 INFO L131 PetriNetUnfolder]: For 6752/7767 co-relation queries the response was YES. [2023-08-30 12:02:26,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50694 conditions, 20788 events. 14947/20788 cut-off events. For 6752/7767 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 122548 event pairs, 10379 based on Foata normal form. 1015/14785 useless extension candidates. Maximal degree in co-relation 50676. Up to 20162 conditions per place. [2023-08-30 12:02:26,758 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 69 selfloop transitions, 12 changer transitions 2/86 dead transitions. [2023-08-30 12:02:26,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 510 flow [2023-08-30 12:02:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:02:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:02:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2023-08-30 12:02:26,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745205479452055 [2023-08-30 12:02:26,760 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2023-08-30 12:02:26,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2023-08-30 12:02:26,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:26,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2023-08-30 12:02:26,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states 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 12:02:26,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states 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 12:02:26,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states 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 12:02:26,766 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 241 flow. Second operand 5 states and 866 transitions. [2023-08-30 12:02:26,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 510 flow [2023-08-30 12:02:26,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:26,778 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 276 flow [2023-08-30 12:02:26,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 12:02:26,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 12:02:26,779 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 276 flow [2023-08-30 12:02:26,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 12:02:26,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:26,780 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:26,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:02:26,780 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:26,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1562737787, now seen corresponding path program 1 times [2023-08-30 12:02:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273809227] [2023-08-30 12:02:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:26,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:02:26,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273809227] [2023-08-30 12:02:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273809227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500585761] [2023-08-30 12:02:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:26,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:26,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:26,857 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 12:02:26,860 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 12:02:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:26,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:02:26,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:27,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500585761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:27,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 12:02:27,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058077576] [2023-08-30 12:02:27,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:27,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:02:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:27,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:02:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:02:27,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-08-30 12:02:27,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 157.53846153846155) internal successors, (2048), 13 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states 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 12:02:27,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:27,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-08-30 12:02:27,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:28,892 INFO L130 PetriNetUnfolder]: 11991/16788 cut-off events. [2023-08-30 12:02:28,892 INFO L131 PetriNetUnfolder]: For 6742/7582 co-relation queries the response was YES. [2023-08-30 12:02:28,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41634 conditions, 16788 events. 11991/16788 cut-off events. For 6742/7582 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 102225 event pairs, 854 based on Foata normal form. 1072/13620 useless extension candidates. Maximal degree in co-relation 41613. Up to 4236 conditions per place. [2023-08-30 12:02:29,020 INFO L137 encePairwiseOnDemand]: 355/365 looper letters, 200 selfloop transitions, 22 changer transitions 9/234 dead transitions. [2023-08-30 12:02:29,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 234 transitions, 1291 flow [2023-08-30 12:02:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:02:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:02:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2530 transitions. [2023-08-30 12:02:29,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621004566210046 [2023-08-30 12:02:29,026 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2530 transitions. [2023-08-30 12:02:29,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2530 transitions. [2023-08-30 12:02:29,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:29,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2530 transitions. [2023-08-30 12:02:29,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 168.66666666666666) internal successors, (2530), 15 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states 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 12:02:29,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states 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 12:02:29,038 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states 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 12:02:29,039 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 276 flow. Second operand 15 states and 2530 transitions. [2023-08-30 12:02:29,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 234 transitions, 1291 flow [2023-08-30 12:02:29,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 234 transitions, 1272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:02:29,063 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 320 flow [2023-08-30 12:02:29,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=320, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2023-08-30 12:02:29,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-08-30 12:02:29,064 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 320 flow [2023-08-30 12:02:29,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.53846153846155) internal successors, (2048), 13 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states 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 12:02:29,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:29,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:29,072 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 12:02:29,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:29,272 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:29,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1997842472, now seen corresponding path program 1 times [2023-08-30 12:02:29,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:29,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514611617] [2023-08-30 12:02:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:29,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:29,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514611617] [2023-08-30 12:02:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514611617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501444196] [2023-08-30 12:02:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:29,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:29,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:29,330 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 12:02:29,352 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 12:02:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:29,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:02:29,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:29,473 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 12:02:29,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:02:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501444196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:02:29,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 12:02:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214215554] [2023-08-30 12:02:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:29,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:02:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:02:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:02:29,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-08-30 12:02:29,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states 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 12:02:29,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:29,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-08-30 12:02:29,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:30,483 INFO L130 PetriNetUnfolder]: 9368/13465 cut-off events. [2023-08-30 12:02:30,483 INFO L131 PetriNetUnfolder]: For 9888/10565 co-relation queries the response was YES. [2023-08-30 12:02:30,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36219 conditions, 13465 events. 9368/13465 cut-off events. For 9888/10565 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 80356 event pairs, 7108 based on Foata normal form. 677/11280 useless extension candidates. Maximal degree in co-relation 36197. Up to 13318 conditions per place. [2023-08-30 12:02:30,598 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 41 selfloop transitions, 8 changer transitions 27/79 dead transitions. [2023-08-30 12:02:30,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 528 flow [2023-08-30 12:02:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:02:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:02:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2023-08-30 12:02:30,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469041095890411 [2023-08-30 12:02:30,601 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2023-08-30 12:02:30,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2023-08-30 12:02:30,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:30,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2023-08-30 12:02:30,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 12:02:30,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states 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 12:02:30,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states 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 12:02:30,607 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 320 flow. Second operand 5 states and 856 transitions. [2023-08-30 12:02:30,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 528 flow [2023-08-30 12:02:30,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 496 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 12:02:30,627 INFO L231 Difference]: Finished difference. Result has 77 places, 52 transitions, 267 flow [2023-08-30 12:02:30,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=52} [2023-08-30 12:02:30,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2023-08-30 12:02:30,628 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 52 transitions, 267 flow [2023-08-30 12:02:30,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states 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 12:02:30,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:30,629 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:30,635 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 12:02:30,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:30,830 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:30,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:30,830 INFO L85 PathProgramCache]: Analyzing trace with hash -568638646, now seen corresponding path program 1 times [2023-08-30 12:02:30,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:30,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836230679] [2023-08-30 12:02:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:30,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:02:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:30,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836230679] [2023-08-30 12:02:30,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836230679] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:30,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609370372] [2023-08-30 12:02:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:30,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:30,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:30,885 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 12:02:30,895 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 12:02:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:30,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:02:31,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:31,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:02:31,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609370372] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:31,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:31,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 12:02:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803893065] [2023-08-30 12:02:31,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:31,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:02:31,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:02:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:02:31,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-08-30 12:02:31,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 52 transitions, 267 flow. Second operand has 13 states, 13 states have (on average 157.84615384615384) internal successors, (2052), 13 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 12:02:31,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:31,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-08-30 12:02:31,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:32,810 INFO L130 PetriNetUnfolder]: 10609/15067 cut-off events. [2023-08-30 12:02:32,811 INFO L131 PetriNetUnfolder]: For 10392/11083 co-relation queries the response was YES. [2023-08-30 12:02:32,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42641 conditions, 15067 events. 10609/15067 cut-off events. For 10392/11083 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 90216 event pairs, 2405 based on Foata normal form. 827/13622 useless extension candidates. Maximal degree in co-relation 42617. Up to 4395 conditions per place. [2023-08-30 12:02:32,963 INFO L137 encePairwiseOnDemand]: 353/365 looper letters, 93 selfloop transitions, 15 changer transitions 76/186 dead transitions. [2023-08-30 12:02:32,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 186 transitions, 1114 flow [2023-08-30 12:02:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:02:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:02:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2324 transitions. [2023-08-30 12:02:32,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2023-08-30 12:02:32,969 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2324 transitions. [2023-08-30 12:02:32,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2324 transitions. [2023-08-30 12:02:32,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:32,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2324 transitions. [2023-08-30 12:02:32,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states 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 12:02:32,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 365.0) internal successors, (5475), 15 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states 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 12:02:32,983 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 365.0) internal successors, (5475), 15 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states 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 12:02:32,984 INFO L175 Difference]: Start difference. First operand has 77 places, 52 transitions, 267 flow. Second operand 14 states and 2324 transitions. [2023-08-30 12:02:32,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 186 transitions, 1114 flow [2023-08-30 12:02:33,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 186 transitions, 1028 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-08-30 12:02:33,080 INFO L231 Difference]: Finished difference. Result has 76 places, 48 transitions, 254 flow [2023-08-30 12:02:33,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=254, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2023-08-30 12:02:33,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-08-30 12:02:33,080 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 254 flow [2023-08-30 12:02:33,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.84615384615384) internal successors, (2052), 13 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 12:02:33,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:33,081 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:33,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 12:02:33,282 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,SelfDestructingSolverStorable15 [2023-08-30 12:02:33,282 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:33,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1031856145, now seen corresponding path program 1 times [2023-08-30 12:02:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045729999] [2023-08-30 12:02:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:02:33,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:33,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045729999] [2023-08-30 12:02:33,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045729999] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:33,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061053127] [2023-08-30 12:02:33,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:33,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:33,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:33,381 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 12:02:33,403 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 12:02:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:33,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:02:33,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:02:33,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:02:33,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061053127] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:33,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:33,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 12:02:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413852796] [2023-08-30 12:02:33,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:33,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:02:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:02:33,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:02:33,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 12:02:33,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 48 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 12:02:33,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:33,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 12:02:33,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:35,787 INFO L130 PetriNetUnfolder]: 22603/31115 cut-off events. [2023-08-30 12:02:35,788 INFO L131 PetriNetUnfolder]: For 26408/28367 co-relation queries the response was YES. [2023-08-30 12:02:35,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92332 conditions, 31115 events. 22603/31115 cut-off events. For 26408/28367 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 190135 event pairs, 4353 based on Foata normal form. 1959/29282 useless extension candidates. Maximal degree in co-relation 92310. Up to 8925 conditions per place. [2023-08-30 12:02:35,991 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 135 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2023-08-30 12:02:35,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 938 flow [2023-08-30 12:02:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:02:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:02:35,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2023-08-30 12:02:35,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155251141552512 [2023-08-30 12:02:35,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1129 transitions. [2023-08-30 12:02:35,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1129 transitions. [2023-08-30 12:02:35,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:35,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1129 transitions. [2023-08-30 12:02:35,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states 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 12:02:35,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states 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 12:02:35,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states 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 12:02:35,998 INFO L175 Difference]: Start difference. First operand has 76 places, 48 transitions, 254 flow. Second operand 6 states and 1129 transitions. [2023-08-30 12:02:35,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 938 flow [2023-08-30 12:02:36,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 142 transitions, 868 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-30 12:02:36,046 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 248 flow [2023-08-30 12:02:36,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-08-30 12:02:36,046 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2023-08-30 12:02:36,046 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 248 flow [2023-08-30 12:02:36,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 12:02:36,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:36,047 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:36,055 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 12:02:36,252 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,SelfDestructingSolverStorable16 [2023-08-30 12:02:36,253 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:36,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1755100232, now seen corresponding path program 1 times [2023-08-30 12:02:36,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:36,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430474717] [2023-08-30 12:02:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:02:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:36,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430474717] [2023-08-30 12:02:36,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430474717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:36,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:36,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:02:36,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414764599] [2023-08-30 12:02:36,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:36,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:36,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:36,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-08-30 12:02:36,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 12:02:36,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:36,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-08-30 12:02:36,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:37,866 INFO L130 PetriNetUnfolder]: 18151/25583 cut-off events. [2023-08-30 12:02:37,866 INFO L131 PetriNetUnfolder]: For 26558/27713 co-relation queries the response was YES. [2023-08-30 12:02:37,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73772 conditions, 25583 events. 18151/25583 cut-off events. For 26558/27713 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 159860 event pairs, 1305 based on Foata normal form. 2427/25442 useless extension candidates. Maximal degree in co-relation 73753. Up to 22944 conditions per place. [2023-08-30 12:02:38,003 INFO L137 encePairwiseOnDemand]: 363/365 looper letters, 63 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 12:02:38,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 441 flow [2023-08-30 12:02:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-08-30 12:02:38,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041095890410959 [2023-08-30 12:02:38,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-08-30 12:02:38,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-08-30 12:02:38,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:38,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-08-30 12:02:38,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:38,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:38,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 12:02:38,007 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 248 flow. Second operand 3 states and 552 transitions. [2023-08-30 12:02:38,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 441 flow [2023-08-30 12:02:38,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 415 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-30 12:02:38,077 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 217 flow [2023-08-30 12:02:38,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-08-30 12:02:38,077 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-30 12:02:38,078 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 217 flow [2023-08-30 12:02:38,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 12:02:38,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:38,078 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:38,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 12:02:38,078 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:38,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:38,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1270755781, now seen corresponding path program 2 times [2023-08-30 12:02:38,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:38,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839994839] [2023-08-30 12:02:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:38,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:02:38,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:38,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839994839] [2023-08-30 12:02:38,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839994839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:38,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285028260] [2023-08-30 12:02:38,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:02:38,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:38,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:38,163 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 12:02:38,166 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 12:02:38,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:02:38,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:02:38,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:02:38,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 12:02:38,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 12:02:38,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285028260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:38,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:38,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-08-30 12:02:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108693573] [2023-08-30 12:02:38,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:02:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:02:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:02:38,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-08-30 12:02:38,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 171.57142857142858) internal successors, (1201), 7 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 12:02:38,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:38,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-08-30 12:02:38,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:40,547 INFO L130 PetriNetUnfolder]: 25039/35015 cut-off events. [2023-08-30 12:02:40,547 INFO L131 PetriNetUnfolder]: For 25550/27089 co-relation queries the response was YES. [2023-08-30 12:02:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95009 conditions, 35015 events. 25039/35015 cut-off events. For 25550/27089 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 218924 event pairs, 3849 based on Foata normal form. 1539/33350 useless extension candidates. Maximal degree in co-relation 94990. Up to 8028 conditions per place. [2023-08-30 12:02:40,741 INFO L137 encePairwiseOnDemand]: 359/365 looper letters, 97 selfloop transitions, 8 changer transitions 20/127 dead transitions. [2023-08-30 12:02:40,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 779 flow [2023-08-30 12:02:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:02:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:02:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1256 transitions. [2023-08-30 12:02:40,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158512720156555 [2023-08-30 12:02:40,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1256 transitions. [2023-08-30 12:02:40,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1256 transitions. [2023-08-30 12:02:40,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:40,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1256 transitions. [2023-08-30 12:02:40,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 12:02:40,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 12:02:40,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 12:02:40,750 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 217 flow. Second operand 7 states and 1256 transitions. [2023-08-30 12:02:40,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 779 flow [2023-08-30 12:02:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 127 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:02:40,863 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 232 flow [2023-08-30 12:02:40,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-08-30 12:02:40,864 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2023-08-30 12:02:40,864 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 232 flow [2023-08-30 12:02:40,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.57142857142858) internal successors, (1201), 7 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 12:02:40,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:40,864 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:40,875 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 12:02:41,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:41,076 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 12:02:41,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash 455261473, now seen corresponding path program 2 times [2023-08-30 12:02:41,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:41,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846686989] [2023-08-30 12:02:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:41,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-30 12:02:41,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846686989] [2023-08-30 12:02:41,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846686989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:41,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622636703] [2023-08-30 12:02:41,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:02:41,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:41,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:41,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:02:41,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 12:02:41,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:02:41,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:02:41,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:02:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 12:02:41,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 12:02:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622636703] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:41,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-08-30 12:02:41,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562464181] [2023-08-30 12:02:41,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:41,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 12:02:41,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:41,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 12:02:41,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:02:41,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-08-30 12:02:41,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 232 flow. Second operand has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states 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 12:02:41,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:41,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-08-30 12:02:41,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:44,138 INFO L130 PetriNetUnfolder]: 28510/38915 cut-off events. [2023-08-30 12:02:44,138 INFO L131 PetriNetUnfolder]: For 39142/42124 co-relation queries the response was YES. [2023-08-30 12:02:44,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114915 conditions, 38915 events. 28510/38915 cut-off events. For 39142/42124 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 234521 event pairs, 5582 based on Foata normal form. 3922/38905 useless extension candidates. Maximal degree in co-relation 114894. Up to 12732 conditions per place. [2023-08-30 12:02:44,288 INFO L137 encePairwiseOnDemand]: 356/365 looper letters, 0 selfloop transitions, 0 changer transitions 161/161 dead transitions. [2023-08-30 12:02:44,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 161 transitions, 1051 flow [2023-08-30 12:02:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 12:02:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 12:02:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2116 transitions. [2023-08-30 12:02:44,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459430979978925 [2023-08-30 12:02:44,290 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2116 transitions. [2023-08-30 12:02:44,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2116 transitions. [2023-08-30 12:02:44,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:44,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2116 transitions. [2023-08-30 12:02:44,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 162.76923076923077) internal successors, (2116), 13 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states 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 12:02:44,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 365.0) internal successors, (5110), 14 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states 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 12:02:44,298 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 365.0) internal successors, (5110), 14 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states 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 12:02:44,298 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 232 flow. Second operand 13 states and 2116 transitions. [2023-08-30 12:02:44,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 161 transitions, 1051 flow [2023-08-30 12:02:44,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 161 transitions, 938 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-08-30 12:02:44,584 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-30 12:02:44,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-30 12:02:44,584 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 12:02:44,584 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-30 12:02:44,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states 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 12:02:44,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-30 12:02:44,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-30 12:02:44,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-30 12:02:44,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-30 12:02:44,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-30 12:02:44,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-30 12:02:44,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-30 12:02:44,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-30 12:02:44,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-30 12:02:44,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-30 12:02:44,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-30 12:02:44,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-08-30 12:02:44,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2023-08-30 12:02:44,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-30 12:02:44,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-30 12:02:44,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-30 12:02:44,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-30 12:02:44,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-30 12:02:44,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-30 12:02:44,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 12:02:44,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:44,792 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:02:44,796 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:02:44,796 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:02:44,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:02:44 BasicIcfg [2023-08-30 12:02:44,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:02:44,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:02:44,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:02:44,803 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:02:44,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:02" (3/4) ... [2023-08-30 12:02:44,805 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:02:44,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:02:44,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:02:44,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 12:02:44,818 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-08-30 12:02:44,819 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:02:44,819 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:02:44,819 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:02:44,861 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:02:44,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:02:44,861 INFO L158 Benchmark]: Toolchain (without parser) took 43226.84ms. Allocated memory was 77.6MB in the beginning and 8.4GB in the end (delta: 8.3GB). Free memory was 55.7MB in the beginning and 6.9GB in the end (delta: -6.9GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-08-30 12:02:44,862 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:02:44,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.03ms. Allocated memory is still 77.6MB. Free memory was 55.5MB in the beginning and 43.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 12:02:44,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.78ms. Allocated memory is still 77.6MB. Free memory was 43.9MB in the beginning and 42.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:02:44,862 INFO L158 Benchmark]: Boogie Preprocessor took 27.92ms. Allocated memory is still 77.6MB. Free memory was 42.0MB in the beginning and 40.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:02:44,863 INFO L158 Benchmark]: RCFGBuilder took 582.32ms. Allocated memory is still 77.6MB. Free memory was 40.3MB in the beginning and 40.3MB in the end (delta: 9.3kB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-08-30 12:02:44,863 INFO L158 Benchmark]: TraceAbstraction took 42279.36ms. Allocated memory was 77.6MB in the beginning and 8.4GB in the end (delta: 8.3GB). Free memory was 39.5MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-08-30 12:02:44,863 INFO L158 Benchmark]: Witness Printer took 58.57ms. Allocated memory is still 8.4GB. Free memory was 7.0GB in the beginning and 6.9GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:02:44,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.03ms. Allocated memory is still 77.6MB. Free memory was 55.5MB in the beginning and 43.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.78ms. Allocated memory is still 77.6MB. Free memory was 43.9MB in the beginning and 42.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.92ms. Allocated memory is still 77.6MB. Free memory was 42.0MB in the beginning and 40.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 582.32ms. Allocated memory is still 77.6MB. Free memory was 40.3MB in the beginning and 40.3MB in the end (delta: 9.3kB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * TraceAbstraction took 42279.36ms. Allocated memory was 77.6MB in the beginning and 8.4GB in the end (delta: 8.3GB). Free memory was 39.5MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 58.57ms. Allocated memory is still 8.4GB. Free memory was 7.0GB in the beginning and 6.9GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 166 PlacesBefore, 41 PlacesAfterwards, 171 TransitionsBefore, 37 TransitionsAfterwards, 2680 CoEnabledTransitionPairs, 7 FixpointIterations, 88 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 173 TotalNumberOfCompositions, 4485 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3188, independent: 3075, independent conditional: 0, independent unconditional: 3075, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1470, independent: 1445, independent conditional: 0, independent unconditional: 1445, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3188, independent: 1630, independent conditional: 0, independent unconditional: 1630, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 1470, unknown conditional: 0, unknown unconditional: 1470] , Statistics on independence cache: Total cache size (in pairs): 136, Positive cache size: 126, Positive conditional cache size: 0, Positive unconditional cache size: 126, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: 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 7 procedures, 224 locations, 19 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: 42.1s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4120 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3492 mSDsluCounter, 1188 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 966 mSDsCounter, 235 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6160 IncrementalHoareTripleChecker+Invalid, 6395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 235 mSolverCounterUnsat, 222 mSDtfsCounter, 6160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred in iteration=14, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 334 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1913 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 38 InterpolantComputations, 13 PerfectInterpolantSequences, 207/276 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:02:44,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE