./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.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-queue-add-3.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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --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 08:30:49,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:30:49,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:30:49,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:30:49,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:30:49,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:30:49,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:30:49,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:30:49,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:30:49,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:30:49,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:30:49,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:30:49,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:30:49,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:30:49,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:30:49,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:30:49,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:30:49,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:30:49,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:30:49,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:30:49,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:30:49,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:30:49,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:30:49,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:30:49,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:30:49,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:30:49,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:30:49,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:30:49,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:30:49,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:30:49,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:30:49,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:30:49,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:30:49,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:30:49,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:30:49,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:30:49,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:30:49,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:30:49,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:30:49,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:30:49,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:30:49,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:30:49,956 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:30:49,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:30:49,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:30:49,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:30:49,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:30:49,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:30:49,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:30:49,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:30:49,959 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:30:49,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:30:49,960 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:30:49,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:30:49,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:30:49,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:30:49,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:30:49,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:30:49,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:30:49,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:30:49,961 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:30:49,962 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:30:49,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:30:49,962 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:30:49,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:30:49,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:30:49,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:30:49,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:30:49,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:30:49,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:30:49,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:30:49,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:30:49,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:30:49,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:30:49,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:30:49,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:30:49,964 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:30:49,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:30:49,965 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:30:49,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:30:50,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:30:50,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:30:50,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:30:50,259 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:30:50,259 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:30:50,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-09-01 08:30:51,513 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:30:51,722 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:30:51,722 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-09-01 08:30:51,728 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83268a79d/4d8eb627ad5746b6990440b65b5bbffc/FLAG0ffe77d96 [2023-09-01 08:30:51,743 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83268a79d/4d8eb627ad5746b6990440b65b5bbffc [2023-09-01 08:30:51,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:30:51,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:30:51,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:30:51,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:30:51,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:30:51,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:51,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd3ae88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51, skipping insertion in model container [2023-09-01 08:30:51,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:51,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:30:51,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:30:51,928 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-queue-add-3.wvr.c[3412,3425] [2023-09-01 08:30:51,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:30:51,943 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:30:51,965 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-queue-add-3.wvr.c[3412,3425] [2023-09-01 08:30:51,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:30:51,975 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:30:51,976 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:30:51,982 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:30:51,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51 WrapperNode [2023-09-01 08:30:51,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:30:51,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:30:51,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:30:51,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:30:51,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,049 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 272 [2023-09-01 08:30:52,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:30:52,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:30:52,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:30:52,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:30:52,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:30:52,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:30:52,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:30:52,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:30:52,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (1/1) ... [2023-09-01 08:30:52,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:30:52,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:30:52,146 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 08:30:52,166 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 08:30:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:30:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:30:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:30:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:30:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:30:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:30:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:30:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:30:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:30:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:30:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:30:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:30:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:30:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:30:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:30:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:30:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:30:52,191 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 08:30:52,297 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:30:52,299 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:30:52,764 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:30:52,924 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:30:52,925 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 08:30:52,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:30:52 BoogieIcfgContainer [2023-09-01 08:30:52,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:30:52,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:30:52,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:30:52,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:30:52,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:30:51" (1/3) ... [2023-09-01 08:30:52,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e90180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:30:52, skipping insertion in model container [2023-09-01 08:30:52,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:30:51" (2/3) ... [2023-09-01 08:30:52,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e90180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:30:52, skipping insertion in model container [2023-09-01 08:30:52,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:30:52" (3/3) ... [2023-09-01 08:30:52,936 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-09-01 08:30:52,944 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:30:52,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:30:52,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-09-01 08:30:52,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:30:53,028 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:30:53,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 229 transitions, 482 flow [2023-09-01 08:30:53,163 INFO L130 PetriNetUnfolder]: 18/226 cut-off events. [2023-09-01 08:30:53,163 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:30:53,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 226 events. 18/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-09-01 08:30:53,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 229 transitions, 482 flow [2023-09-01 08:30:53,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 208 transitions, 431 flow [2023-09-01 08:30:53,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:30:53,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 208 transitions, 431 flow [2023-09-01 08:30:53,187 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 208 transitions, 431 flow [2023-09-01 08:30:53,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 208 transitions, 431 flow [2023-09-01 08:30:53,219 INFO L130 PetriNetUnfolder]: 17/208 cut-off events. [2023-09-01 08:30:53,220 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:30:53,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 208 events. 17/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-09-01 08:30:53,223 INFO L119 LiptonReduction]: Number of co-enabled transitions 3252 [2023-09-01 08:31:01,193 INFO L134 LiptonReduction]: Checked pairs total: 6101 [2023-09-01 08:31:01,193 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-09-01 08:31:01,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:31:01,211 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;@41716ac9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:31:01,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-09-01 08:31:01,215 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:31:01,215 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:31:01,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:01,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:31:01,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:01,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 33767, now seen corresponding path program 1 times [2023-09-01 08:31:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:01,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439565066] [2023-09-01 08:31:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:01,576 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 08:31:01,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439565066] [2023-09-01 08:31:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439565066] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:31:01,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:31:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757572409] [2023-09-01 08:31:01,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:01,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:31:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:01,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:31:01,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:31:01,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-09-01 08:31:01,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 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 08:31:01,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:01,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-09-01 08:31:01,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:02,765 INFO L130 PetriNetUnfolder]: 6213/8035 cut-off events. [2023-09-01 08:31:02,766 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-09-01 08:31:02,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16382 conditions, 8035 events. 6213/8035 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 38906 event pairs, 3335 based on Foata normal form. 0/2647 useless extension candidates. Maximal degree in co-relation 7334. Up to 3991 conditions per place. [2023-09-01 08:31:02,826 INFO L137 encePairwiseOnDemand]: 433/447 looper letters, 65 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-09-01 08:31:02,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 312 flow [2023-09-01 08:31:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:31:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:31:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-09-01 08:31:02,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48396718866517524 [2023-09-01 08:31:02,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-09-01 08:31:02,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-09-01 08:31:02,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:02,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-09-01 08:31:02,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:31:02,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:02,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:02,876 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 649 transitions. [2023-09-01 08:31:02,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 312 flow [2023-09-01 08:31:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:31:02,892 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 122 flow [2023-09-01 08:31:02,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-09-01 08:31:02,900 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-09-01 08:31:02,903 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 122 flow [2023-09-01 08:31:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 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 08:31:02,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:02,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:31:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:31:02,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:02,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1047808, now seen corresponding path program 1 times [2023-09-01 08:31:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630127905] [2023-09-01 08:31:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:03,019 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 08:31:03,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:03,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630127905] [2023-09-01 08:31:03,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630127905] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:03,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307692707] [2023-09-01 08:31:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:03,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:03,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:03,024 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 08:31:03,052 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 08:31:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:03,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:31:03,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:03,184 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 08:31:03,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:31:03,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307692707] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:03,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:31:03,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:31:03,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948122035] [2023-09-01 08:31:03,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:03,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:31:03,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:03,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:31:03,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:31:03,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-09-01 08:31:03,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 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 08:31:03,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:03,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-09-01 08:31:03,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:04,154 INFO L130 PetriNetUnfolder]: 6213/8033 cut-off events. [2023-09-01 08:31:04,155 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 08:31:04,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16266 conditions, 8033 events. 6213/8033 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 38847 event pairs, 3335 based on Foata normal form. 0/2651 useless extension candidates. Maximal degree in co-relation 8127. Up to 3991 conditions per place. [2023-09-01 08:31:04,206 INFO L137 encePairwiseOnDemand]: 441/447 looper letters, 63 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-09-01 08:31:04,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 70 transitions, 312 flow [2023-09-01 08:31:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:31:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:31:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 821 transitions. [2023-09-01 08:31:04,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45917225950782997 [2023-09-01 08:31:04,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 821 transitions. [2023-09-01 08:31:04,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 821 transitions. [2023-09-01 08:31:04,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:04,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 821 transitions. [2023-09-01 08:31:04,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 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 08:31:04,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 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 08:31:04,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 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 08:31:04,239 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 122 flow. Second operand 4 states and 821 transitions. [2023-09-01 08:31:04,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 70 transitions, 312 flow [2023-09-01 08:31:04,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:31:04,243 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 114 flow [2023-09-01 08:31:04,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-09-01 08:31:04,244 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-09-01 08:31:04,244 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 114 flow [2023-09-01 08:31:04,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 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 08:31:04,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:04,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:31:04,253 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 08:31:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:04,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:04,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1047810, now seen corresponding path program 1 times [2023-09-01 08:31:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:04,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555927360] [2023-09-01 08:31:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:04,544 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 08:31:04,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:04,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555927360] [2023-09-01 08:31:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555927360] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:04,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149577349] [2023-09-01 08:31:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:04,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:04,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:04,551 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 08:31:04,572 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 08:31:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:04,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:31:04,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:04,638 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 08:31:04,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:31:04,655 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 08:31:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149577349] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:31:04,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:31:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:31:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987504888] [2023-09-01 08:31:04,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:31:04,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:31:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:31:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:31:04,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-09-01 08:31:04,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 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 08:31:04,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:04,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-09-01 08:31:04,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:06,937 INFO L130 PetriNetUnfolder]: 15519/20066 cut-off events. [2023-09-01 08:31:06,938 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 08:31:06,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40617 conditions, 20066 events. 15519/20066 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 108010 event pairs, 8336 based on Foata normal form. 0/6677 useless extension candidates. Maximal degree in co-relation 32443. Up to 3994 conditions per place. [2023-09-01 08:31:07,122 INFO L137 encePairwiseOnDemand]: 441/447 looper letters, 150 selfloop transitions, 13 changer transitions 0/166 dead transitions. [2023-09-01 08:31:07,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 166 transitions, 738 flow [2023-09-01 08:31:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:31:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:31:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1297 transitions. [2023-09-01 08:31:07,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835943325876212 [2023-09-01 08:31:07,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1297 transitions. [2023-09-01 08:31:07,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1297 transitions. [2023-09-01 08:31:07,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:07,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1297 transitions. [2023-09-01 08:31:07,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.16666666666666) internal successors, (1297), 6 states have internal predecessors, (1297), 0 states have call successors, (0), 0 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 08:31:07,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 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 08:31:07,136 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 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 08:31:07,136 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 114 flow. Second operand 6 states and 1297 transitions. [2023-09-01 08:31:07,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 166 transitions, 738 flow [2023-09-01 08:31:07,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 166 transitions, 730 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:31:07,145 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 205 flow [2023-09-01 08:31:07,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2023-09-01 08:31:07,147 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-09-01 08:31:07,147 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 205 flow [2023-09-01 08:31:07,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 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 08:31:07,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:07,148 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:31:07,155 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 08:31:07,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 08:31:07,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:07,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:07,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1151500841, now seen corresponding path program 2 times [2023-09-01 08:31:07,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:07,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117712977] [2023-09-01 08:31:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:07,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:07,489 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 08:31:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117712977] [2023-09-01 08:31:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117712977] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041857099] [2023-09-01 08:31:07,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:31:07,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:07,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:07,492 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 08:31:07,495 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 08:31:07,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:31:07,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:31:07,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:31:07,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:07,582 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 08:31:07,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:31:07,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041857099] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:07,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:31:07,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:31:07,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761457743] [2023-09-01 08:31:07,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:07,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:31:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:31:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:31:07,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 447 [2023-09-01 08:31:07,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 08:31:07,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:07,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 447 [2023-09-01 08:31:07,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:09,301 INFO L130 PetriNetUnfolder]: 15551/20097 cut-off events. [2023-09-01 08:31:09,301 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-09-01 08:31:09,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40707 conditions, 20097 events. 15551/20097 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 108843 event pairs, 8340 based on Foata normal form. 1/6543 useless extension candidates. Maximal degree in co-relation 32521. Up to 19952 conditions per place. [2023-09-01 08:31:09,415 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 40 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-09-01 08:31:09,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 287 flow [2023-09-01 08:31:09,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:31:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:31:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-09-01 08:31:09,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511558538404176 [2023-09-01 08:31:09,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-09-01 08:31:09,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-09-01 08:31:09,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:09,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-09-01 08:31:09,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 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 08:31:09,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:09,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:09,423 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 205 flow. Second operand 3 states and 605 transitions. [2023-09-01 08:31:09,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 287 flow [2023-09-01 08:31:09,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 268 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:31:09,426 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 188 flow [2023-09-01 08:31:09,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-09-01 08:31:09,428 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-09-01 08:31:09,428 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 188 flow [2023-09-01 08:31:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 08:31:09,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:09,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:31:09,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:31:09,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:09,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:09,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1173794815, now seen corresponding path program 1 times [2023-09-01 08:31:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:09,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330636639] [2023-09-01 08:31:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:09,718 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 08:31:09,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330636639] [2023-09-01 08:31:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330636639] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:09,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:31:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:31:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769827474] [2023-09-01 08:31:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:31:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:31:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:31:09,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-09-01 08:31:09,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 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 08:31:09,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:09,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-09-01 08:31:09,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:11,877 INFO L130 PetriNetUnfolder]: 21321/28687 cut-off events. [2023-09-01 08:31:11,877 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 08:31:11,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58248 conditions, 28687 events. 21321/28687 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 2372. Compared 180669 event pairs, 8425 based on Foata normal form. 0/10837 useless extension candidates. Maximal degree in co-relation 58192. Up to 17293 conditions per place. [2023-09-01 08:31:12,035 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-09-01 08:31:12,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 387 flow [2023-09-01 08:31:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:31:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:31:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-09-01 08:31:12,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47576435495898584 [2023-09-01 08:31:12,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-09-01 08:31:12,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-09-01 08:31:12,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:12,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-09-01 08:31:12,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 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 08:31:12,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:12,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:12,044 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 188 flow. Second operand 3 states and 638 transitions. [2023-09-01 08:31:12,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 387 flow [2023-09-01 08:31:12,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:31:12,046 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 190 flow [2023-09-01 08:31:12,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-09-01 08:31:12,047 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-09-01 08:31:12,047 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 190 flow [2023-09-01 08:31:12,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 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 08:31:12,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:12,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:31:12,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:31:12,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:12,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1173794818, now seen corresponding path program 1 times [2023-09-01 08:31:12,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:12,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267277728] [2023-09-01 08:31:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:12,115 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 08:31:12,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267277728] [2023-09-01 08:31:12,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267277728] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:12,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:31:12,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:31:12,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303576438] [2023-09-01 08:31:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:12,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:31:12,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:31:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:31:12,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 447 [2023-09-01 08:31:12,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 08:31:12,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:12,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 447 [2023-09-01 08:31:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:13,945 INFO L130 PetriNetUnfolder]: 19161/26063 cut-off events. [2023-09-01 08:31:13,946 INFO L131 PetriNetUnfolder]: For 1259/1874 co-relation queries the response was YES. [2023-09-01 08:31:14,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55610 conditions, 26063 events. 19161/26063 cut-off events. For 1259/1874 co-relation queries the response was YES. Maximal size of possible extension queue 2172. Compared 163863 event pairs, 12675 based on Foata normal form. 830/11663 useless extension candidates. Maximal degree in co-relation 44186. Up to 25716 conditions per place. [2023-09-01 08:31:14,132 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 71 selfloop transitions, 4 changer transitions 2/80 dead transitions. [2023-09-01 08:31:14,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 440 flow [2023-09-01 08:31:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:31:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:31:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 995 transitions. [2023-09-01 08:31:14,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451901565995526 [2023-09-01 08:31:14,136 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 995 transitions. [2023-09-01 08:31:14,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 995 transitions. [2023-09-01 08:31:14,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:14,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 995 transitions. [2023-09-01 08:31:14,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 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 08:31:14,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:31:14,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:31:14,145 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 190 flow. Second operand 5 states and 995 transitions. [2023-09-01 08:31:14,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 440 flow [2023-09-01 08:31:14,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:31:14,151 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 232 flow [2023-09-01 08:31:14,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-09-01 08:31:14,154 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2023-09-01 08:31:14,154 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 232 flow [2023-09-01 08:31:14,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 08:31:14,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:14,155 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:31:14,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:31:14,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:14,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2037248566, now seen corresponding path program 1 times [2023-09-01 08:31:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:14,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016520339] [2023-09-01 08:31:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:14,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:14,252 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 08:31:14,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016520339] [2023-09-01 08:31:14,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016520339] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465944703] [2023-09-01 08:31:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:14,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:14,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:14,254 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 08:31:14,278 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 08:31:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:14,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:31:14,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:14,368 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 08:31:14,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:31:14,418 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 08:31:14,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465944703] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:31:14,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:31:14,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:31:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673958248] [2023-09-01 08:31:14,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:31:14,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:31:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:31:14,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:31:14,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-09-01 08:31:14,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 232 flow. Second operand has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 0 states have call successors, (0), 0 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 08:31:14,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:14,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-09-01 08:31:14,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:19,358 INFO L130 PetriNetUnfolder]: 42219/57401 cut-off events. [2023-09-01 08:31:19,358 INFO L131 PetriNetUnfolder]: For 23892/25269 co-relation queries the response was YES. [2023-09-01 08:31:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151981 conditions, 57401 events. 42219/57401 cut-off events. For 23892/25269 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 375398 event pairs, 27918 based on Foata normal form. 1365/25224 useless extension candidates. Maximal degree in co-relation 151243. Up to 15359 conditions per place. [2023-09-01 08:31:19,675 INFO L137 encePairwiseOnDemand]: 442/447 looper letters, 334 selfloop transitions, 32 changer transitions 0/369 dead transitions. [2023-09-01 08:31:19,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 369 transitions, 2052 flow [2023-09-01 08:31:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:31:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:31:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2616 transitions. [2023-09-01 08:31:19,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48769574944071586 [2023-09-01 08:31:19,683 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2616 transitions. [2023-09-01 08:31:19,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2616 transitions. [2023-09-01 08:31:19,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:19,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2616 transitions. [2023-09-01 08:31:19,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 218.0) internal successors, (2616), 12 states have internal predecessors, (2616), 0 states have call successors, (0), 0 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 08:31:19,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 447.0) internal successors, (5811), 13 states have internal predecessors, (5811), 0 states have call successors, (0), 0 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 08:31:19,699 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 447.0) internal successors, (5811), 13 states have internal predecessors, (5811), 0 states have call successors, (0), 0 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 08:31:19,699 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 232 flow. Second operand 12 states and 2616 transitions. [2023-09-01 08:31:19,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 369 transitions, 2052 flow [2023-09-01 08:31:19,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 369 transitions, 2046 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:31:19,706 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 444 flow [2023-09-01 08:31:19,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-09-01 08:31:19,707 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2023-09-01 08:31:19,707 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 444 flow [2023-09-01 08:31:19,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.15384615384616) internal successors, (2459), 13 states have internal predecessors, (2459), 0 states have call successors, (0), 0 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 08:31:19,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:19,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:31:19,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:31:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:19,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:19,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1359082651, now seen corresponding path program 1 times [2023-09-01 08:31:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:19,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985152710] [2023-09-01 08:31:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:20,022 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 08:31:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985152710] [2023-09-01 08:31:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985152710] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608518192] [2023-09-01 08:31:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:20,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:20,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:20,027 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 08:31:20,030 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 08:31:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:31:20,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:20,132 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 08:31:20,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:31:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608518192] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:20,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:31:20,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:31:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497002401] [2023-09-01 08:31:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:31:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:31:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:31:20,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-09-01 08:31:20,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 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 08:31:20,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:20,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-09-01 08:31:20,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:22,747 INFO L130 PetriNetUnfolder]: 23750/32728 cut-off events. [2023-09-01 08:31:22,747 INFO L131 PetriNetUnfolder]: For 19759/21013 co-relation queries the response was YES. [2023-09-01 08:31:22,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81730 conditions, 32728 events. 23750/32728 cut-off events. For 19759/21013 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 209085 event pairs, 15565 based on Foata normal form. 1210/17493 useless extension candidates. Maximal degree in co-relation 73508. Up to 32519 conditions per place. [2023-09-01 08:31:22,937 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 62 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-09-01 08:31:22,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 552 flow [2023-09-01 08:31:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:31:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:31:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-09-01 08:31:22,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45488441461595824 [2023-09-01 08:31:22,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-09-01 08:31:22,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-09-01 08:31:22,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:22,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-09-01 08:31:22,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 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 08:31:22,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:22,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:22,945 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 444 flow. Second operand 3 states and 610 transitions. [2023-09-01 08:31:22,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 552 flow [2023-09-01 08:31:22,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 460 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-09-01 08:31:22,950 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 336 flow [2023-09-01 08:31:22,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-09-01 08:31:22,951 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2023-09-01 08:31:22,951 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 336 flow [2023-09-01 08:31:22,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 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 08:31:22,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:22,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:31:22,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:31:23,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:23,160 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:23,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash -818108275, now seen corresponding path program 1 times [2023-09-01 08:31:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825851205] [2023-09-01 08:31:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:23,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:31:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825851205] [2023-09-01 08:31:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825851205] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061559368] [2023-09-01 08:31:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:23,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:23,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:23,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:31:23,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:31:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:23,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:31:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:31:23,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:31:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:31:23,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061559368] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:31:23,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:31:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-09-01 08:31:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351800969] [2023-09-01 08:31:23,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:31:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:31:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:31:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:31:23,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 447 [2023-09-01 08:31:23,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 336 flow. Second operand has 12 states, 12 states have (on average 179.41666666666666) internal successors, (2153), 12 states have internal predecessors, (2153), 0 states have call successors, (0), 0 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 08:31:23,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:23,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 447 [2023-09-01 08:31:23,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:27,960 INFO L130 PetriNetUnfolder]: 33166/46545 cut-off events. [2023-09-01 08:31:27,961 INFO L131 PetriNetUnfolder]: For 34057/36345 co-relation queries the response was YES. [2023-09-01 08:31:28,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112967 conditions, 46545 events. 33166/46545 cut-off events. For 34057/36345 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 322918 event pairs, 16577 based on Foata normal form. 6336/29011 useless extension candidates. Maximal degree in co-relation 112945. Up to 32195 conditions per place. [2023-09-01 08:31:28,254 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 143 selfloop transitions, 11 changer transitions 3/160 dead transitions. [2023-09-01 08:31:28,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 1002 flow [2023-09-01 08:31:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:31:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:31:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1896 transitions. [2023-09-01 08:31:28,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416107382550333 [2023-09-01 08:31:28,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1896 transitions. [2023-09-01 08:31:28,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1896 transitions. [2023-09-01 08:31:28,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:28,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1896 transitions. [2023-09-01 08:31:28,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 189.6) internal successors, (1896), 10 states have internal predecessors, (1896), 0 states have call successors, (0), 0 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 08:31:28,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 447.0) internal successors, (4917), 11 states have internal predecessors, (4917), 0 states have call successors, (0), 0 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 08:31:28,271 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 447.0) internal successors, (4917), 11 states have internal predecessors, (4917), 0 states have call successors, (0), 0 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 08:31:28,271 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 336 flow. Second operand 10 states and 1896 transitions. [2023-09-01 08:31:28,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 1002 flow [2023-09-01 08:31:28,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 160 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:31:28,278 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 437 flow [2023-09-01 08:31:28,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=437, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-09-01 08:31:28,279 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-09-01 08:31:28,279 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 437 flow [2023-09-01 08:31:28,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 179.41666666666666) internal successors, (2153), 12 states have internal predecessors, (2153), 0 states have call successors, (0), 0 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 08:31:28,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:28,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:31:28,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:31:28,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:28,485 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:28,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1149840102, now seen corresponding path program 2 times [2023-09-01 08:31:28,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:28,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492007015] [2023-09-01 08:31:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:28,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:31:28,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:28,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492007015] [2023-09-01 08:31:28,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492007015] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:28,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058645316] [2023-09-01 08:31:28,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:31:28,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:28,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:28,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:31:28,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:31:28,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:31:28,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:31:28,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:31:28,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:31:28,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:31:28,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058645316] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:31:28,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:31:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250182369] [2023-09-01 08:31:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:28,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:31:28,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:31:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:31:28,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-09-01 08:31:28,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 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 08:31:28,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:28,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-09-01 08:31:28,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:33,130 INFO L130 PetriNetUnfolder]: 37709/52331 cut-off events. [2023-09-01 08:31:33,130 INFO L131 PetriNetUnfolder]: For 46225/46225 co-relation queries the response was YES. [2023-09-01 08:31:33,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140914 conditions, 52331 events. 37709/52331 cut-off events. For 46225/46225 co-relation queries the response was YES. Maximal size of possible extension queue 2419. Compared 363689 event pairs, 9471 based on Foata normal form. 0/26899 useless extension candidates. Maximal degree in co-relation 140887. Up to 24420 conditions per place. [2023-09-01 08:31:33,461 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 103 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-09-01 08:31:33,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 755 flow [2023-09-01 08:31:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:31:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:31:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 838 transitions. [2023-09-01 08:31:33,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46868008948545864 [2023-09-01 08:31:33,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 838 transitions. [2023-09-01 08:31:33,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 838 transitions. [2023-09-01 08:31:33,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:33,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 838 transitions. [2023-09-01 08:31:33,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.5) internal successors, (838), 4 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 08:31:33,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 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 08:31:33,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 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 08:31:33,470 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 437 flow. Second operand 4 states and 838 transitions. [2023-09-01 08:31:33,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 755 flow [2023-09-01 08:31:33,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 108 transitions, 740 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-09-01 08:31:33,496 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 424 flow [2023-09-01 08:31:33,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-09-01 08:31:33,496 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-09-01 08:31:33,496 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 424 flow [2023-09-01 08:31:33,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 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 08:31:33,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:33,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:31:33,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:31:33,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:33,705 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:33,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:33,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1149840121, now seen corresponding path program 1 times [2023-09-01 08:31:33,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:33,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135306525] [2023-09-01 08:31:33,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:33,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:31:33,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135306525] [2023-09-01 08:31:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135306525] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:31:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990846411] [2023-09-01 08:31:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:33,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:31:33,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:31:33,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:31:33,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:31:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:33,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:31:33,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:31:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:31:33,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:31:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:31:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990846411] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:31:33,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:31:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:31:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757432761] [2023-09-01 08:31:33,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:31:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:31:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:31:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:31:33,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-09-01 08:31:33,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 0 states have call successors, (0), 0 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 08:31:33,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:33,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-09-01 08:31:33,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:42,041 INFO L130 PetriNetUnfolder]: 65011/89401 cut-off events. [2023-09-01 08:31:42,042 INFO L131 PetriNetUnfolder]: For 86420/86420 co-relation queries the response was YES. [2023-09-01 08:31:42,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246336 conditions, 89401 events. 65011/89401 cut-off events. For 86420/86420 co-relation queries the response was YES. Maximal size of possible extension queue 3925. Compared 642077 event pairs, 13431 based on Foata normal form. 0/47238 useless extension candidates. Maximal degree in co-relation 246309. Up to 24420 conditions per place. [2023-09-01 08:31:42,727 INFO L137 encePairwiseOnDemand]: 444/447 looper letters, 150 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2023-09-01 08:31:42,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 158 transitions, 1006 flow [2023-09-01 08:31:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:31:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:31:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1274 transitions. [2023-09-01 08:31:42,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750186428038777 [2023-09-01 08:31:42,731 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1274 transitions. [2023-09-01 08:31:42,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1274 transitions. [2023-09-01 08:31:42,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:42,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1274 transitions. [2023-09-01 08:31:42,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.33333333333334) internal successors, (1274), 6 states have internal predecessors, (1274), 0 states have call successors, (0), 0 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 08:31:42,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 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 08:31:42,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 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 08:31:42,738 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 424 flow. Second operand 6 states and 1274 transitions. [2023-09-01 08:31:42,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 158 transitions, 1006 flow [2023-09-01 08:31:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 158 transitions, 1002 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:31:42,783 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 465 flow [2023-09-01 08:31:42,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=465, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2023-09-01 08:31:42,783 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-09-01 08:31:42,784 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 465 flow [2023-09-01 08:31:42,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 0 states have call successors, (0), 0 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 08:31:42,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:42,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:31:42,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:31:42,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-09-01 08:31:42,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:42,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash -26959065, now seen corresponding path program 1 times [2023-09-01 08:31:42,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:42,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121607301] [2023-09-01 08:31:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:42,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:43,073 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 08:31:43,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:43,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121607301] [2023-09-01 08:31:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121607301] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:43,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:31:43,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:31:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811360283] [2023-09-01 08:31:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:43,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:31:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:31:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:31:43,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 447 [2023-09-01 08:31:43,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 08:31:43,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:43,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 447 [2023-09-01 08:31:43,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:49,872 INFO L130 PetriNetUnfolder]: 52386/72631 cut-off events. [2023-09-01 08:31:49,872 INFO L131 PetriNetUnfolder]: For 133111/135629 co-relation queries the response was YES. [2023-09-01 08:31:50,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211701 conditions, 72631 events. 52386/72631 cut-off events. For 133111/135629 co-relation queries the response was YES. Maximal size of possible extension queue 3484. Compared 519195 event pairs, 34584 based on Foata normal form. 2666/41937 useless extension candidates. Maximal degree in co-relation 211671. Up to 72009 conditions per place. [2023-09-01 08:31:50,458 INFO L137 encePairwiseOnDemand]: 434/447 looper letters, 70 selfloop transitions, 14 changer transitions 6/93 dead transitions. [2023-09-01 08:31:50,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 781 flow [2023-09-01 08:31:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:31:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:31:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 790 transitions. [2023-09-01 08:31:50,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441834451901566 [2023-09-01 08:31:50,461 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 790 transitions. [2023-09-01 08:31:50,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 790 transitions. [2023-09-01 08:31:50,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:50,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 790 transitions. [2023-09-01 08:31:50,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 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 08:31:50,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 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 08:31:50,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 0 states have call successors, (0), 0 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 08:31:50,465 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 465 flow. Second operand 4 states and 790 transitions. [2023-09-01 08:31:50,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 781 flow [2023-09-01 08:31:50,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 764 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:31:50,520 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 523 flow [2023-09-01 08:31:50,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-09-01 08:31:50,521 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2023-09-01 08:31:50,521 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 523 flow [2023-09-01 08:31:50,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 08:31:50,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:50,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:31:50,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:31:50,522 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:50,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash 708352741, now seen corresponding path program 1 times [2023-09-01 08:31:50,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:50,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455680071] [2023-09-01 08:31:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:50,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:31:50,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:50,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455680071] [2023-09-01 08:31:50,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455680071] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:50,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:31:50,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:31:50,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833430235] [2023-09-01 08:31:50,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:50,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:31:50,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:31:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:31:50,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 447 [2023-09-01 08:31:50,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 08:31:50,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:50,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 447 [2023-09-01 08:31:50,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:31:57,096 INFO L130 PetriNetUnfolder]: 48222/66773 cut-off events. [2023-09-01 08:31:57,096 INFO L131 PetriNetUnfolder]: For 99164/100034 co-relation queries the response was YES. [2023-09-01 08:31:57,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225592 conditions, 66773 events. 48222/66773 cut-off events. For 99164/100034 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 469364 event pairs, 12004 based on Foata normal form. 1138/36831 useless extension candidates. Maximal degree in co-relation 225559. Up to 65815 conditions per place. [2023-09-01 08:31:57,652 INFO L137 encePairwiseOnDemand]: 443/447 looper letters, 76 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2023-09-01 08:31:57,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 720 flow [2023-09-01 08:31:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:31:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:31:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-09-01 08:31:57,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571215510812826 [2023-09-01 08:31:57,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-09-01 08:31:57,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-09-01 08:31:57,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:31:57,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-09-01 08:31:57,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 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 08:31:57,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:57,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:31:57,658 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 523 flow. Second operand 3 states and 613 transitions. [2023-09-01 08:31:57,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 720 flow [2023-09-01 08:31:57,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 689 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 08:31:57,743 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 513 flow [2023-09-01 08:31:57,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2023-09-01 08:31:57,744 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-09-01 08:31:57,744 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 513 flow [2023-09-01 08:31:57,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 08:31:57,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:31:57,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:31:57,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:31:57,745 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:31:57,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:31:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash -356178230, now seen corresponding path program 1 times [2023-09-01 08:31:57,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:31:57,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023081686] [2023-09-01 08:31:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:31:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:31:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:31:57,867 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 08:31:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:31:57,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023081686] [2023-09-01 08:31:57,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023081686] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:31:57,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:31:57,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:31:57,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798418774] [2023-09-01 08:31:57,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:31:57,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:31:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:31:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:31:57,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:31:57,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 447 [2023-09-01 08:31:57,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 08:31:57,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:31:57,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 447 [2023-09-01 08:31:57,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:32:03,701 INFO L130 PetriNetUnfolder]: 45342/63155 cut-off events. [2023-09-01 08:32:03,702 INFO L131 PetriNetUnfolder]: For 125581/125911 co-relation queries the response was YES. [2023-09-01 08:32:04,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217327 conditions, 63155 events. 45342/63155 cut-off events. For 125581/125911 co-relation queries the response was YES. Maximal size of possible extension queue 3025. Compared 412836 event pairs, 6540 based on Foata normal form. 1430/34345 useless extension candidates. Maximal degree in co-relation 217293. Up to 57961 conditions per place. [2023-09-01 08:32:04,236 INFO L137 encePairwiseOnDemand]: 437/447 looper letters, 83 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-09-01 08:32:04,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 787 flow [2023-09-01 08:32:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:32:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:32:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-09-01 08:32:04,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571215510812826 [2023-09-01 08:32:04,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-09-01 08:32:04,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-09-01 08:32:04,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:32:04,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-09-01 08:32:04,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 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 08:32:04,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:32:04,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:32:04,242 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 513 flow. Second operand 3 states and 613 transitions. [2023-09-01 08:32:04,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 787 flow [2023-09-01 08:32:04,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 754 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-09-01 08:32:04,307 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 541 flow [2023-09-01 08:32:04,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2023-09-01 08:32:04,308 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-09-01 08:32:04,308 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 541 flow [2023-09-01 08:32:04,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 08:32:04,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:32:04,309 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:32:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:32:04,309 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:32:04,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:32:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1770095374, now seen corresponding path program 2 times [2023-09-01 08:32:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:32:04,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87881220] [2023-09-01 08:32:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:32:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:32:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:32:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:32:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:32:04,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87881220] [2023-09-01 08:32:04,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87881220] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:32:04,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367275114] [2023-09-01 08:32:04,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:32:04,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:32:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:32:04,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:32:04,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:32:04,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:32:04,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:32:04,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:32:04,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:32:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:32:04,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:32:04,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367275114] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:32:04,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:32:04,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 08:32:04,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916641477] [2023-09-01 08:32:04,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:32:04,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:32:04,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:32:04,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:32:04,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:32:04,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 447 [2023-09-01 08:32:04,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 08:32:04,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:32:04,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 447 [2023-09-01 08:32:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:32:10,170 INFO L130 PetriNetUnfolder]: 42460/59283 cut-off events. [2023-09-01 08:32:10,170 INFO L131 PetriNetUnfolder]: For 60665/60995 co-relation queries the response was YES. [2023-09-01 08:32:10,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215820 conditions, 59283 events. 42460/59283 cut-off events. For 60665/60995 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 386053 event pairs, 21618 based on Foata normal form. 1320/34863 useless extension candidates. Maximal degree in co-relation 215784. Up to 59052 conditions per place. [2023-09-01 08:32:10,660 INFO L137 encePairwiseOnDemand]: 445/447 looper letters, 72 selfloop transitions, 1 changer transitions 1/77 dead transitions. [2023-09-01 08:32:10,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 77 transitions, 677 flow [2023-09-01 08:32:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:32:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:32:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-09-01 08:32:10,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519015659955257 [2023-09-01 08:32:10,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-09-01 08:32:10,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-09-01 08:32:10,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:32:10,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-09-01 08:32:10,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 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 08:32:10,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:32:10,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 08:32:10,665 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 541 flow. Second operand 3 states and 606 transitions. [2023-09-01 08:32:10,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 77 transitions, 677 flow [2023-09-01 08:32:10,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 660 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 08:32:10,699 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 508 flow [2023-09-01 08:32:10,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-09-01 08:32:10,700 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-09-01 08:32:10,700 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 508 flow [2023-09-01 08:32:10,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 08:32:10,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:32:10,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:32:10,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:32:10,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:32:10,906 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:32:10,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:32:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1590415616, now seen corresponding path program 1 times [2023-09-01 08:32:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:32:10,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863956750] [2023-09-01 08:32:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:32:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:32:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:32:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:32:11,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:32:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863956750] [2023-09-01 08:32:11,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863956750] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:32:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330591663] [2023-09-01 08:32:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:32:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:32:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:32:11,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:32:11,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:32:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:32:11,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2023-09-01 08:32:11,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:32:11,720 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 08:32:11,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:32:11,783 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 08:32:11,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:32:11,851 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 08:32:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:32:11,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:32:12,129 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:32:12,130 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 31 treesize of output 32 [2023-09-01 08:32:12,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:32:12,142 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 87 treesize of output 79 [2023-09-01 08:32:12,150 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 68 treesize of output 56 [2023-09-01 08:32:12,165 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 30 treesize of output 24 [2023-09-01 08:32:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:32:12,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330591663] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:32:12,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:32:12,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-09-01 08:32:12,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822529726] [2023-09-01 08:32:12,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:32:12,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 08:32:12,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:32:12,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 08:32:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=261, Unknown=2, NotChecked=0, Total=306 [2023-09-01 08:32:15,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:32:15,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 447 [2023-09-01 08:32:15,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 508 flow. Second operand has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 0 states have call successors, (0), 0 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 08:32:15,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:32:15,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 447 [2023-09-01 08:32:15,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:32:19,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:32:29,060 INFO L130 PetriNetUnfolder]: 56006/80919 cut-off events. [2023-09-01 08:32:29,061 INFO L131 PetriNetUnfolder]: For 49011/49281 co-relation queries the response was YES. [2023-09-01 08:32:29,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284041 conditions, 80919 events. 56006/80919 cut-off events. For 49011/49281 co-relation queries the response was YES. Maximal size of possible extension queue 3968. Compared 587294 event pairs, 18847 based on Foata normal form. 281/46468 useless extension candidates. Maximal degree in co-relation 284008. Up to 52796 conditions per place. [2023-09-01 08:32:29,688 INFO L137 encePairwiseOnDemand]: 431/447 looper letters, 146 selfloop transitions, 61 changer transitions 9/218 dead transitions. [2023-09-01 08:32:29,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 218 transitions, 1574 flow [2023-09-01 08:32:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-09-01 08:32:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-09-01 08:32:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4151 transitions. [2023-09-01 08:32:29,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2995597892761781 [2023-09-01 08:32:29,695 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4151 transitions. [2023-09-01 08:32:29,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4151 transitions. [2023-09-01 08:32:29,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:32:29,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4151 transitions. [2023-09-01 08:32:29,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 133.90322580645162) internal successors, (4151), 31 states have internal predecessors, (4151), 0 states have call successors, (0), 0 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 08:32:29,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 447.0) internal successors, (14304), 32 states have internal predecessors, (14304), 0 states have call successors, (0), 0 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 08:32:29,717 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 447.0) internal successors, (14304), 32 states have internal predecessors, (14304), 0 states have call successors, (0), 0 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 08:32:29,718 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 508 flow. Second operand 31 states and 4151 transitions. [2023-09-01 08:32:29,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 218 transitions, 1574 flow [2023-09-01 08:32:29,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 218 transitions, 1545 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-09-01 08:32:29,740 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 906 flow [2023-09-01 08:32:29,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=906, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2023-09-01 08:32:29,741 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2023-09-01 08:32:29,741 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 906 flow [2023-09-01 08:32:29,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 0 states have call successors, (0), 0 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 08:32:29,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:32:29,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:32:29,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:32:29,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:32:29,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:32:29,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:32:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2119953933, now seen corresponding path program 1 times [2023-09-01 08:32:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:32:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107278489] [2023-09-01 08:32:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:32:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:32:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:32:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:32:30,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:32:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107278489] [2023-09-01 08:32:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107278489] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:32:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926184156] [2023-09-01 08:32:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:32:30,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:32:30,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:32:30,764 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:32:30,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 08:32:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:32:30,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 08:32:30,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:32:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:32:30,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:32:30,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926184156] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:32:30,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:32:30,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-09-01 08:32:30,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16194139] [2023-09-01 08:32:30,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:32:30,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:32:30,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:32:30,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:32:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:32:31,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 447 [2023-09-01 08:32:31,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 906 flow. Second operand has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 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 08:32:31,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:32:31,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 447 [2023-09-01 08:32:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:32:40,241 INFO L130 PetriNetUnfolder]: 59681/86798 cut-off events. [2023-09-01 08:32:40,241 INFO L131 PetriNetUnfolder]: For 123129/123390 co-relation queries the response was YES. [2023-09-01 08:32:40,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334606 conditions, 86798 events. 59681/86798 cut-off events. For 123129/123390 co-relation queries the response was YES. Maximal size of possible extension queue 4460. Compared 649447 event pairs, 26803 based on Foata normal form. 261/53370 useless extension candidates. Maximal degree in co-relation 334559. Up to 80672 conditions per place. [2023-09-01 08:32:41,178 INFO L137 encePairwiseOnDemand]: 440/447 looper letters, 140 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2023-09-01 08:32:41,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 161 transitions, 1462 flow [2023-09-01 08:32:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:32:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:32:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 960 transitions. [2023-09-01 08:32:41,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42953020134228187 [2023-09-01 08:32:41,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 960 transitions. [2023-09-01 08:32:41,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 960 transitions. [2023-09-01 08:32:41,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:32:41,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 960 transitions. [2023-09-01 08:32:41,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 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 08:32:41,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:32:41,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:32:41,185 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 906 flow. Second operand 5 states and 960 transitions. [2023-09-01 08:32:41,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 161 transitions, 1462 flow [2023-09-01 08:32:42,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 161 transitions, 1358 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-09-01 08:32:42,858 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 915 flow [2023-09-01 08:32:42,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=915, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2023-09-01 08:32:42,858 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 70 predicate places. [2023-09-01 08:32:42,858 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 915 flow [2023-09-01 08:32:42,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 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 08:32:42,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:32:42,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:32:42,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-09-01 08:32:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 08:32:43,065 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:32:43,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:32:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1960193687, now seen corresponding path program 2 times [2023-09-01 08:32:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:32:43,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671226592] [2023-09-01 08:32:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:32:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:32:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:32:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:32:43,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:32:43,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671226592] [2023-09-01 08:32:43,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671226592] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:32:43,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090651959] [2023-09-01 08:32:43,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:32:43,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:32:43,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:32:43,589 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:32:43,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 08:32:43,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:32:43,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:32:43,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 08:32:43,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:32:43,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:32:43,839 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 18 treesize of output 20 [2023-09-01 08:32:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:32:43,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:32:43,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090651959] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:32:43,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:32:43,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-09-01 08:32:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129950458] [2023-09-01 08:32:43,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:32:43,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:32:43,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:32:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:32:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:32:44,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 447 [2023-09-01 08:32:44,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 915 flow. Second operand has 7 states, 7 states have (on average 173.71428571428572) internal successors, (1216), 7 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 08:32:44,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:32:44,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 447 [2023-09-01 08:32:44,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand