./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-mts.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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:20:13,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:20:13,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:20:13,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:20:13,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:20:13,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:20:13,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:20:13,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:20:13,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:20:13,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:20:13,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:20:13,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:20:13,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:20:13,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:20:13,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:20:13,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:20:13,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:20:13,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:20:13,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:20:13,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:20:13,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:20:13,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:20:13,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:20:13,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:20:13,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:20:13,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:20:13,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:20:13,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:20:13,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:20:13,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:20:13,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:20:13,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:20:13,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:20:13,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:20:13,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:20:13,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:20:13,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:20:13,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:20:13,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:20:13,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:20:13,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:20:13,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:20:14,015 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:20:14,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:20:14,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:20:14,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:20:14,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:20:14,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:20:14,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:20:14,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:20:14,017 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:20:14,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:20:14,018 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:20:14,018 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:20:14,019 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:20:14,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:20:14,020 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:20:14,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:20:14,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:20:14,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:20:14,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:20:14,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:14,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:20:14,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:20:14,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:20:14,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:20:14,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:20:14,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:20:14,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:20:14,022 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:20:14,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:20:14,022 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:20:14,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:20:14,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:20:14,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:20:14,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:20:14,273 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:20:14,273 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:20:14,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-09-01 08:20:15,343 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:20:15,521 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:20:15,522 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-09-01 08:20:15,527 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a0845d3d/cf72442389f143b58189f24dc1ebccba/FLAG43c49afe6 [2023-09-01 08:20:15,546 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a0845d3d/cf72442389f143b58189f24dc1ebccba [2023-09-01 08:20:15,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:20:15,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:20:15,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:15,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:20:15,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:20:15,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f628a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15, skipping insertion in model container [2023-09-01 08:20:15,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:20:15,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:20:15,710 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-09-01 08:20:15,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:15,724 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:20:15,756 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-09-01 08:20:15,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:15,777 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:20:15,778 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:20:15,782 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:20:15,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15 WrapperNode [2023-09-01 08:20:15,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:15,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:15,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:20:15,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:20:15,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,849 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 306 [2023-09-01 08:20:15,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:15,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:20:15,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:20:15,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:20:15,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:20:15,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:20:15,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:20:15,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:20:15,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (1/1) ... [2023-09-01 08:20:15,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:15,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:15,918 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) [2023-09-01 08:20:15,937 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 [2023-09-01 08:20:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:20:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:20:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:20:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:20:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:20:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:20:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:20:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:20:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:20:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:20:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:20:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:20:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:20:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:20:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:20:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:20:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:20:15,951 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:20:16,027 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:20:16,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:20:16,402 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:20:16,806 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:20:16,806 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:20:16,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:16 BoogieIcfgContainer [2023-09-01 08:20:16,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:20:16,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:20:16,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:20:16,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:20:16,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:20:15" (1/3) ... [2023-09-01 08:20:16,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717aaf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:16, skipping insertion in model container [2023-09-01 08:20:16,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:15" (2/3) ... [2023-09-01 08:20:16,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717aaf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:16, skipping insertion in model container [2023-09-01 08:20:16,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:16" (3/3) ... [2023-09-01 08:20:16,815 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-09-01 08:20:16,821 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:20:16,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:20:16,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-09-01 08:20:16,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:20:17,000 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:20:17,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 299 transitions, 622 flow [2023-09-01 08:20:17,217 INFO L130 PetriNetUnfolder]: 23/296 cut-off events. [2023-09-01 08:20:17,217 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:20:17,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 23/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 761 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 2 conditions per place. [2023-09-01 08:20:17,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 299 transitions, 622 flow [2023-09-01 08:20:17,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 275 transitions, 568 flow [2023-09-01 08:20:17,237 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:20:17,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 275 transitions, 568 flow [2023-09-01 08:20:17,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 275 transitions, 568 flow [2023-09-01 08:20:17,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 275 transitions, 568 flow [2023-09-01 08:20:17,387 INFO L130 PetriNetUnfolder]: 21/275 cut-off events. [2023-09-01 08:20:17,388 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:20:17,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 21/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 231. Up to 2 conditions per place. [2023-09-01 08:20:17,400 INFO L119 LiptonReduction]: Number of co-enabled transitions 21924 [2023-09-01 08:20:36,391 INFO L134 LiptonReduction]: Checked pairs total: 26523 [2023-09-01 08:20:36,392 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-09-01 08:20:36,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:20:36,407 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;@eec6f0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:20:36,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-09-01 08:20:36,409 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:20:36,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:20:36,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:36,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:20:36,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:20:36,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash 48150, now seen corresponding path program 1 times [2023-09-01 08:20:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827743020] [2023-09-01 08:20:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827743020] [2023-09-01 08:20:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827743020] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:36,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:20:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179559085] [2023-09-01 08:20:36,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:36,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:36,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:36,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-09-01 08:20:36,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:36,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:36,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-09-01 08:20:36,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:41,508 INFO L130 PetriNetUnfolder]: 30525/38649 cut-off events. [2023-09-01 08:20:41,509 INFO L131 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2023-09-01 08:20:41,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78071 conditions, 38649 events. 30525/38649 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 3851. Compared 217828 event pairs, 16960 based on Foata normal form. 0/9985 useless extension candidates. Maximal degree in co-relation 36512. Up to 19227 conditions per place. [2023-09-01 08:20:41,729 INFO L137 encePairwiseOnDemand]: 618/636 looper letters, 99 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-09-01 08:20:41,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 446 flow [2023-09-01 08:20:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-09-01 08:20:41,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806079664570231 [2023-09-01 08:20:41,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-09-01 08:20:41,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-09-01 08:20:41,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:41,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-09-01 08:20:41,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,776 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 156 flow. Second operand 3 states and 917 transitions. [2023-09-01 08:20:41,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 446 flow [2023-09-01 08:20:41,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 104 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 08:20:41,923 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2023-09-01 08:20:41,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-09-01 08:20:41,928 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -17 predicate places. [2023-09-01 08:20:41,930 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2023-09-01 08:20:41,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:41,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:41,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:20:41,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:20:41,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1495540, now seen corresponding path program 1 times [2023-09-01 08:20:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264965980] [2023-09-01 08:20:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:41,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264965980] [2023-09-01 08:20:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264965980] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:42,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084773961] [2023-09-01 08:20:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:42,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-09-01 08:20:42,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:42,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:42,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-09-01 08:20:42,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:46,953 INFO L130 PetriNetUnfolder]: 30525/38648 cut-off events. [2023-09-01 08:20:46,954 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-09-01 08:20:46,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77445 conditions, 38648 events. 30525/38648 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4217. Compared 219084 event pairs, 16960 based on Foata normal form. 0/9921 useless extension candidates. Maximal degree in co-relation 38720. Up to 38448 conditions per place. [2023-09-01 08:20:47,101 INFO L137 encePairwiseOnDemand]: 634/636 looper letters, 51 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-09-01 08:20:47,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 230 flow [2023-09-01 08:20:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-09-01 08:20:47,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392033542976939 [2023-09-01 08:20:47,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-09-01 08:20:47,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-09-01 08:20:47,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:47,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-09-01 08:20:47,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,109 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 838 transitions. [2023-09-01 08:20:47,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 230 flow [2023-09-01 08:20:47,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:47,111 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 126 flow [2023-09-01 08:20:47,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-09-01 08:20:47,112 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -17 predicate places. [2023-09-01 08:20:47,112 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 126 flow [2023-09-01 08:20:47,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:47,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:47,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:20:47,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:20:47,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1495552, now seen corresponding path program 1 times [2023-09-01 08:20:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540243654] [2023-09-01 08:20:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:47,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:47,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:47,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540243654] [2023-09-01 08:20:47,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540243654] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:47,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326103286] [2023-09-01 08:20:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:47,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:47,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:47,226 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) [2023-09-01 08:20:47,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:20:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:47,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:47,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:47,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:47,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326103286] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:47,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:47,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:20:47,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006434619] [2023-09-01 08:20:47,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:47,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:47,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:47,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-09-01 08:20:47,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:47,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-09-01 08:20:47,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:00,432 INFO L130 PetriNetUnfolder]: 76311/96617 cut-off events. [2023-09-01 08:21:00,433 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-09-01 08:21:00,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193596 conditions, 96617 events. 76311/96617 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 8184. Compared 591706 event pairs, 42400 based on Foata normal form. 0/25065 useless extension candidates. Maximal degree in co-relation 193588. Up to 19226 conditions per place. [2023-09-01 08:21:00,823 INFO L137 encePairwiseOnDemand]: 633/636 looper letters, 242 selfloop transitions, 5 changer transitions 0/250 dead transitions. [2023-09-01 08:21:00,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 250 transitions, 1040 flow [2023-09-01 08:21:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:21:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:21:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1822 transitions. [2023-09-01 08:21:00,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47746331236897277 [2023-09-01 08:21:00,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1822 transitions. [2023-09-01 08:21:00,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1822 transitions. [2023-09-01 08:21:00,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:00,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1822 transitions. [2023-09-01 08:21:00,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 303.6666666666667) internal successors, (1822), 6 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:00,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:00,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:00,837 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 126 flow. Second operand 6 states and 1822 transitions. [2023-09-01 08:21:00,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 250 transitions, 1040 flow [2023-09-01 08:21:00,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 250 transitions, 1039 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:00,842 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 161 flow [2023-09-01 08:21:00,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-09-01 08:21:00,843 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-09-01 08:21:00,843 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 161 flow [2023-09-01 08:21:00,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:00,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:00,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:21:00,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:21:01,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:01,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:21:01,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1437414625, now seen corresponding path program 1 times [2023-09-01 08:21:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216094901] [2023-09-01 08:21:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:01,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216094901] [2023-09-01 08:21:01,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216094901] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:01,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:21:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349610980] [2023-09-01 08:21:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:01,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:21:01,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:21:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:21:01,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 636 [2023-09-01 08:21:01,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:01,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:01,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 636 [2023-09-01 08:21:01,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:09,092 INFO L130 PetriNetUnfolder]: 54449/70695 cut-off events. [2023-09-01 08:21:09,093 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-09-01 08:21:09,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141725 conditions, 70695 events. 54449/70695 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 6967. Compared 455399 event pairs, 33964 based on Foata normal form. 1/19852 useless extension candidates. Maximal degree in co-relation 141713. Up to 70323 conditions per place. [2023-09-01 08:21:09,387 INFO L137 encePairwiseOnDemand]: 633/636 looper letters, 54 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-09-01 08:21:09,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 273 flow [2023-09-01 08:21:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-09-01 08:21:09,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308176100628931 [2023-09-01 08:21:09,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-09-01 08:21:09,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-09-01 08:21:09,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:09,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-09-01 08:21:09,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:09,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:09,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:09,395 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 161 flow. Second operand 3 states and 822 transitions. [2023-09-01 08:21:09,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 273 flow [2023-09-01 08:21:09,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 263 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:09,397 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 159 flow [2023-09-01 08:21:09,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-09-01 08:21:09,398 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-09-01 08:21:09,398 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 159 flow [2023-09-01 08:21:09,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:09,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:09,399 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:21:09,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:21:09,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:21:09,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1606828962, now seen corresponding path program 2 times [2023-09-01 08:21:09,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:09,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14992853] [2023-09-01 08:21:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:09,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:09,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:09,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14992853] [2023-09-01 08:21:09,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14992853] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:09,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254242132] [2023-09-01 08:21:09,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:09,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:09,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:09,483 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) [2023-09-01 08:21:09,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:21:09,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:09,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:09,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:21:09,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:21:09,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254242132] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:09,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:09,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:21:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524252314] [2023-09-01 08:21:09,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:09,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:09,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:09,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:09,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:21:09,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-09-01 08:21:09,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:09,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:09,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-09-01 08:21:09,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:17,909 INFO L130 PetriNetUnfolder]: 61049/77294 cut-off events. [2023-09-01 08:21:17,909 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 08:21:18,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154895 conditions, 77294 events. 61049/77294 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 7277. Compared 467549 event pairs, 33920 based on Foata normal form. 1/19843 useless extension candidates. Maximal degree in co-relation 154881. Up to 76894 conditions per place. [2023-09-01 08:21:18,312 INFO L137 encePairwiseOnDemand]: 634/636 looper letters, 53 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-09-01 08:21:18,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 257 flow [2023-09-01 08:21:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-09-01 08:21:18,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2023-09-01 08:21:18,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-09-01 08:21:18,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-09-01 08:21:18,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:18,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-09-01 08:21:18,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:18,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:18,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:18,343 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 159 flow. Second operand 3 states and 840 transitions. [2023-09-01 08:21:18,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 257 flow [2023-09-01 08:21:18,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 243 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 08:21:18,345 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 137 flow [2023-09-01 08:21:18,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-09-01 08:21:18,348 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -13 predicate places. [2023-09-01 08:21:18,351 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 137 flow [2023-09-01 08:21:18,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:18,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:18,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:21:18,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:21:18,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:18,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:21:18,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937155, now seen corresponding path program 1 times [2023-09-01 08:21:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:18,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173417891] [2023-09-01 08:21:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:18,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:18,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173417891] [2023-09-01 08:21:18,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173417891] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:18,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529338444] [2023-09-01 08:21:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:18,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:18,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:18,842 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) [2023-09-01 08:21:18,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:21:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:18,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:21:18,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:19,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:21:19,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:21:19,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:21:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:19,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:19,120 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_173 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_173) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-09-01 08:21:19,133 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:21:19,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 08:21:19,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:21:19,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 08:21:19,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-09-01 08:21:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 08:21:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529338444] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:19,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:19,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-09-01 08:21:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867827184] [2023-09-01 08:21:19,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:21:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:21:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-09-01 08:21:19,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 636 [2023-09-01 08:21:19,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 137 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:19,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:19,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 636 [2023-09-01 08:21:19,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:34,140 INFO L130 PetriNetUnfolder]: 88501/115186 cut-off events. [2023-09-01 08:21:34,140 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 08:21:34,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231141 conditions, 115186 events. 88501/115186 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12025. Compared 795450 event pairs, 24032 based on Foata normal form. 0/32066 useless extension candidates. Maximal degree in co-relation 231131. Up to 66073 conditions per place. [2023-09-01 08:21:34,707 INFO L137 encePairwiseOnDemand]: 621/636 looper letters, 91 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2023-09-01 08:21:34,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 477 flow [2023-09-01 08:21:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:21:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:21:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1976 transitions. [2023-09-01 08:21:34,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38836477987421386 [2023-09-01 08:21:34,711 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1976 transitions. [2023-09-01 08:21:34,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1976 transitions. [2023-09-01 08:21:34,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:34,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1976 transitions. [2023-09-01 08:21:34,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:34,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:34,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:34,720 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 137 flow. Second operand 8 states and 1976 transitions. [2023-09-01 08:21:34,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 477 flow [2023-09-01 08:21:34,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:34,722 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 254 flow [2023-09-01 08:21:34,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=254, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2023-09-01 08:21:34,723 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-09-01 08:21:34,723 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 254 flow [2023-09-01 08:21:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:34,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:34,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:21:34,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:21:34,929 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 [2023-09-01 08:21:34,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:21:34,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937177, now seen corresponding path program 1 times [2023-09-01 08:21:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:34,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858577086] [2023-09-01 08:21:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:21:34,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:34,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858577086] [2023-09-01 08:21:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858577086] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:34,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:21:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237012386] [2023-09-01 08:21:34,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:34,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:34,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:34,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-09-01 08:21:34,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:21:34,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:34,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-09-01 08:21:34,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:01,178 INFO L130 PetriNetUnfolder]: 165445/212978 cut-off events. [2023-09-01 08:22:01,179 INFO L131 PetriNetUnfolder]: For 15318/15318 co-relation queries the response was YES. [2023-09-01 08:22:01,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464266 conditions, 212978 events. 165445/212978 cut-off events. For 15318/15318 co-relation queries the response was YES. Maximal size of possible extension queue 16076. Compared 1475280 event pairs, 52164 based on Foata normal form. 0/69474 useless extension candidates. Maximal degree in co-relation 464252. Up to 108902 conditions per place. [2023-09-01 08:22:02,337 INFO L137 encePairwiseOnDemand]: 631/636 looper letters, 118 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2023-09-01 08:22:02,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 668 flow [2023-09-01 08:22:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-09-01 08:22:02,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638364779874214 [2023-09-01 08:22:02,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-09-01 08:22:02,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-09-01 08:22:02,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:02,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-09-01 08:22:02,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:02,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:02,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:02,343 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 254 flow. Second operand 3 states and 885 transitions. [2023-09-01 08:22:02,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 668 flow [2023-09-01 08:22:02,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 662 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:22:02,403 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 304 flow [2023-09-01 08:22:02,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2023-09-01 08:22:02,404 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-09-01 08:22:02,404 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 304 flow [2023-09-01 08:22:02,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:02,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:02,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:22:02,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:22:02,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:22:02,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937178, now seen corresponding path program 1 times [2023-09-01 08:22:02,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:02,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6521602] [2023-09-01 08:22:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:02,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:22:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6521602] [2023-09-01 08:22:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6521602] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:02,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:02,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:22:02,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049560308] [2023-09-01 08:22:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:02,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:02,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:22:02,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-09-01 08:22:02,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:02,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:02,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-09-01 08:22:02,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:26,921 INFO L130 PetriNetUnfolder]: 163377/210906 cut-off events. [2023-09-01 08:22:26,921 INFO L131 PetriNetUnfolder]: For 37896/37896 co-relation queries the response was YES. [2023-09-01 08:22:27,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472707 conditions, 210906 events. 163377/210906 cut-off events. For 37896/37896 co-relation queries the response was YES. Maximal size of possible extension queue 16112. Compared 1475141 event pairs, 48812 based on Foata normal form. 0/78586 useless extension candidates. Maximal degree in co-relation 472691. Up to 112257 conditions per place. [2023-09-01 08:22:28,123 INFO L137 encePairwiseOnDemand]: 632/636 looper letters, 117 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2023-09-01 08:22:28,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 125 transitions, 676 flow [2023-09-01 08:22:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-09-01 08:22:28,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46331236897274636 [2023-09-01 08:22:28,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-09-01 08:22:28,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-09-01 08:22:28,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:28,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-09-01 08:22:28,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:28,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:28,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:28,140 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 304 flow. Second operand 3 states and 884 transitions. [2023-09-01 08:22:28,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 125 transitions, 676 flow [2023-09-01 08:22:28,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 125 transitions, 664 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:22:28,418 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 282 flow [2023-09-01 08:22:28,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2023-09-01 08:22:28,421 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-09-01 08:22:28,421 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 282 flow [2023-09-01 08:22:28,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:28,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:28,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:22:28,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:22:28,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:22:28,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:28,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937179, now seen corresponding path program 1 times [2023-09-01 08:22:28,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:28,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854694534] [2023-09-01 08:22:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:28,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:28,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854694534] [2023-09-01 08:22:28,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854694534] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:28,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423024378] [2023-09-01 08:22:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:28,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:28,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:28,649 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) [2023-09-01 08:22:28,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:22:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:28,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:22:28,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:28,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:22:28,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:22:28,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:22:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:28,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:22:28,909 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_248) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-09-01 08:22:28,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:22:28,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-09-01 08:22:28,926 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:22:28,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-09-01 08:22:28,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-09-01 08:22:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 08:22:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423024378] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:22:28,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:22:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-09-01 08:22:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456354193] [2023-09-01 08:22:28,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:22:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:22:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:22:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-09-01 08:22:29,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 636 [2023-09-01 08:22:29,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:29,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:29,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 636 [2023-09-01 08:22:29,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:55,436 INFO L130 PetriNetUnfolder]: 163693/213530 cut-off events. [2023-09-01 08:22:55,436 INFO L131 PetriNetUnfolder]: For 51400/51400 co-relation queries the response was YES. [2023-09-01 08:22:55,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472151 conditions, 213530 events. 163693/213530 cut-off events. For 51400/51400 co-relation queries the response was YES. Maximal size of possible extension queue 17224. Compared 1546701 event pairs, 75848 based on Foata normal form. 0/77050 useless extension candidates. Maximal degree in co-relation 472135. Up to 174553 conditions per place. [2023-09-01 08:22:56,559 INFO L137 encePairwiseOnDemand]: 624/636 looper letters, 94 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2023-09-01 08:22:56,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 648 flow [2023-09-01 08:22:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:22:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:22:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1971 transitions. [2023-09-01 08:22:56,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873820754716981 [2023-09-01 08:22:56,563 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1971 transitions. [2023-09-01 08:22:56,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1971 transitions. [2023-09-01 08:22:56,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:56,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1971 transitions. [2023-09-01 08:22:56,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 246.375) internal successors, (1971), 8 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:56,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:56,578 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:56,578 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 282 flow. Second operand 8 states and 1971 transitions. [2023-09-01 08:22:56,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 648 flow [2023-09-01 08:22:56,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:22:56,673 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 378 flow [2023-09-01 08:22:56,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-09-01 08:22:56,674 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-09-01 08:22:56,674 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 378 flow [2023-09-01 08:22:56,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:56,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:56,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:56,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 08:22:56,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:56,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-09-01 08:22:56,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1724162583, now seen corresponding path program 1 times [2023-09-01 08:22:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252638677] [2023-09-01 08:22:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252638677] [2023-09-01 08:22:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252638677] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677865127] [2023-09-01 08:22:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:57,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:57,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:57,274 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) [2023-09-01 08:22:57,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:22:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:22:57,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:57,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:22:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:22:57,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:22:57,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:22:57,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:22:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:57,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:22:57,549 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_292) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-09-01 08:22:57,605 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:22:57,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:22:57,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:22:57,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 08:22:57,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-09-01 08:22:57,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 08:22:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:57,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677865127] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:22:57,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:22:57,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:22:57,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391720753] [2023-09-01 08:22:57,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:22:57,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:22:57,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:22:57,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=143, Unknown=1, NotChecked=24, Total=210 [2023-09-01 08:22:57,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 636 [2023-09-01 08:22:57,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 378 flow. Second operand has 15 states, 15 states have (on average 231.26666666666668) internal successors, (3469), 15 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:57,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:57,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 636 [2023-09-01 08:22:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand